Troubleshooting Guide
Chapter 16 - Disaster Recovery Procedures
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Disaster Recovery Procedures

Disaster Recovery Procedures

Introduction

Restarting a Cisco BTS 10200 Softswitch Process

Disaster Recovery From Flash Archive

Before You Begin

Flash Archive Restore

Setting up Interfaces

Restoring the Cisco BTS 10200 Softswitch Application

Power Failure Recovery

Power Fail Occurs Procedure

Power is Restored Procedure

Power Failure Scenarios

Power Failure on Single Host Computer

Recovery Procedure

Power Failure on Both Call Agent Computers

Power Failure on Both Element Management System Computers

Total System Power Outage

Element Management System Database Recovery from Hot Backup

Recovery Goal

Recovering the Primary Element Management System Database

Post Recovery - Cold Backup

Recovering the Element Management System Database from Another Database

Recovery Procedures

Recovering Shared Memory Data

Recovering Shared Memory

Restoring Subscriber and Trunk Terminations to Service

Controlling Trunks and Trunk Groups

Using the cs-control Tool to Bring Subscribers In-Service

Disaster Recovery Using the Automatic Shared Memory Backup

Before You Begin

Automatic Shared Memory Backup Restore

Restore Shared Memory Script

Disaster Recovery Procedures

Revised: July 22, 2009, OL-8000-32

Introduction

This chapter describes how to recover your database in a disaster situation, how to recover your database from another database, and how to recover data from the Call Agent shared memory.

Cisco recommends backing up all data on the Element Management System (EMS), Call Agent (CA) and Feature Server (FS) platforms on a daily basis, and saving the backed up data to a remote server. Data backup files are needed in the unlikely event that data on both the primary and secondary sides of any platform become corrupted. In that case, data must be restored from a backup file.

Restarting a Cisco BTS 10200 Softswitch Process

When a Cisco BTS 10200 Softswitch process exits due to an internal error (such as SIGSEGV on UNIX) or is terminated by the platform, the system automatically restarts the process that shut down.

Restarting the process is a preferred alternative to switching over to the mate, because the restart preserves stable calls and also attempts to preserve transient calls. When a process is restarted, the process audits information such as resource states and attempts to repair inconsistencies. If a process experiences a high failure rate (even after repeated restarts), the system will switch over to the mate.

Disaster Recovery From Flash Archive

This section describes the steps needed to restore the Flash Archive on the Cisco BTS 10200 Softswitch system. The flash archive backup is performed before any software upgrade or for maintenance routine purpose. This procedure is used ONLY when both mirrored disks are corrupted or cannot be booted.

Flash Archive is a Sun Solaris tool that allows you to take an image of a host and store it on a network file server (NFS) that can be used later for disaster recovery.

For the Cisco BTS 10200 Softswitch, it is recommended to take a system flash archive whenever the Solaris Operation System is being modified.

Before You Begin

Before restoring your system, you must have the following:

Bootable Sun Solaris 10 Operating System CD #1
Note: Sun Solaris 10 can be download at www.sun.com

Console access

Restored Host name

Internet Protocol (IP) address and netmask of restored system

Location of an archive

Enabling negotiation on the 2900 switch for the primary interface of the system

Example:

c2924.118-A#config t

c2924.118-A(config-t)#int fastEthernet 0/1

c2924.118-A(config-if)#no speed 100

c2924.118-A(config-if)#no full duplex


Flash Archive Restore

Note Cisco recommends running this procedure during maintenance window or when traffic is low.

Step 1 Connect to the console of the restored unit.

Step 2 Load the bootable Solaris-10 CD into the compact disk - read only media (CD-ROM) drive.

Step 3 At the ok> prompt, type: boot cdrom

Step 4 Enter 0 for English.

Step 5 Enter 14 for Other.

Step 6 Enter vt100 for terminal type.

Step 7 Press Esc-2 to continue.

Step 8 Press Esc-2 again to continue.

Step 9 Press Esc-2 to continue, use default setting (Mark X on Yes for Networked).

Step 10 Choose primary interface then Esc-2 to continue.

Step 11 Press Esc-2 to continue, use default setting (Mark X on No for Use Dynamic Host Configuration Protocol (DHCP)).

Step 12 Enter <hostname>, then press Esc-2 to continue.

Step 13 Enter <IP address>; then press Esc-2 to continue.

Step 14 Press Esc-2 to continue, use default setting (Mark X on Yes for System part of a subnet).

Step 15 Enter <Netmask>; then press Esc-2 to continue.

Step 16 Press Esc-2 to continue, use default setting (Mark X on No for Enable IPv6).

Step 17 Confirm the network information and press Esc-2 to continue.

Step 18 Press Esc-2 to continue, use default setting (Mark X on No for Configure Kerberos Security).

Step 19 Press Esc-2 to continue.

Step 20 Mark X on None for Name service. Press Esc-2 to continue.

Step 21 Confirm the information and press Esc-2 to continue.

Step 22 Choose Continents and Oceans then Esc-2.

Step 23 Choose Countries and Regions then Press Esc-2.

Step 24 Mark X on Timezone. Press Esc-2 to continue.

Step 25 Set date and time. Press Esc-2 to continue.

Step 26 Confirm the information and press Esc-2 to continue.

Step 27 Choose F4 for Flash installation, Esc-4.

Step 28 Choose Manual reboot, then Press Esc-2.

Step 29 Mark x on NFS for NFS Flash Archive Retrieval Method then Press Esc-2.

Step 30 Provide the location of the archive, as shown in the following example and Press Esc-2:

10.89.224.1:/archive/prica18.archive


Press Esc-2 to continue.

Step 31 Mark x on primary Disk and then Press Esc-2.

Step 32 Press Esc-2 to continue without preserve data.

Step 33 Press Esc-4 for Customize disk layout.

Step 34 Partition the disk as follows and Press Esc-2.

filesys rootdisk.s0 2000 /

filesys rootdisk.s1 5000 /var

filesys rootdisk.s3 4000 swap

filesys rootdisk.s4 24

filesys rootdisk.s5 free /optfilesys rootdisk.s6 2000


Press Esc-2 to confirm Disk Layout.

Step 35 Press Esc-2 to continue.

Step 36 Press Esc-2 to continue without remote mounts.

Step 37 Press Esc-2 to continue with installation.

Note The restoration will take about 15-30 minutes.

Step 38 Press ! (exclanation sign) to exit if prompted.

Step 39 Verify /a/etc/vfstab and /a/etc/system files contain no disk mirroring information.

Example of /a/etc/vfstab:

######################################################

#device device mount FS fsck mount mount

#to mount to fsck point type pass at boot options

#

#/dev/dsk/c1d0s2 /dev/rdsk/c1d0s2 /usr ufs 1 yes -

fd - /dev/fd fd - no -

/proc - /proc proc - no -

/dev/dsk/c1t0d0s3 - - swap - no -

/dev/dsk/c1t0d0s0 /dev/rdsk/c1t0d0s0 / ufs 1 yes -

/dev/dsk/c1t0d0s1 /dev/rdsk/c1t0d0s1 /var ufs 1 yes -

/dev/dsk/c1t0d0s5 /dev/rdsk/c1t0d0s5 /opt ufs 2 yes -

swap - /tmp tmpfs - yes -

######################################################


/a/etc/system file SHOULD NOT have the following similar lines:

##############################

* Begin MDD root info (do not edit)

rootdev:/pseudo/md@0:0,2,blk

* End MDD root info (do not edit)

##############################


Step 40 Enter the following command:

cp /a/bin/date /a/bin/.date

mv /a/bin/date.archive /a/bin/date

mv /a/etc/rc3.d/S99platform /a/etc/rc3.d/saved.S99platform


Step 41 Restore 2900 switch back to force 100MB full-duplex.

Step 42 Power cycle the system.

Setting up Interfaces

Use the following procedures to set-up the interfaces.

Step 1 Login as root.

Step 2 Sftp the following files from the mate:

cd /tmp

sftp <mate ip address>

get /etc/resolv.conf

get /etc/hosts host

get /etc/netmasks

get /etc/nsswitch.conf

get /etc/default/init

bye


Step 3 Copy the nsswitch.conf file to /etc/ directory

cp -p nsswitch.conf /etc/


Step 4 Copy the nsswitch.conf file to /etc/ directory

cp -p nsswitch.conf /etc/


Step 5 Copy the resolv.conf file to /etc/ directory

cp -p resolv.conf /etc/


Step 6 Copy init file to /etc/default/ directory

cp -p init /etc/default/


Step 7 Set up interfaces:

cd /opt/setup

setlogic_EMS.sh (Run this script to set up interfaces on EMS box)

setlogic_CA.sh ( Run this script to set up interfaces on CA box)


Verify all interfaces are setting up properly.


Step 8 Set up root password by enter the following command:

passwd root


Step 9 Reboot the box:

shutdown -y -g0 -i6


Restoring the Cisco BTS 10200 Softswitch Application

To restore the software application, perform the following steps:

Step 1 Login as root.

Step 2 Run checkCFG script to make sure no errors are encounter.

Step 3 Restore platforms shared-memory.

For CA/FS:

<hostname>#mount <NFS server ip>:/<shared directory> /mnt

<hostname>#cp /mnt/data.<hostname>.CA.gz /opt/

<hostname>#gzip -cd /opt/data.<hostname>.CA.gz | tar -xvf -

<hostname>#cp /mnt/data.<hostname>.FSPTC.gx /opt/

<hostname>#gzip -cd /opt/data.<hostname>.FSPTC.gz | tar -xvf -

<hostname>#cp /mnt/data.<hostname>.FSAIN.gz /opt/

<hostname>#gzip -cd /opt/data.<hostname>.FSAIN.gz | tar -xvf -


For EMS/BDMS:

<hostname>#mount <NFS server ip>:/<shared directory> /mnt

<hostname>#cp /mnt/oradata.<hostname>.gz /opt/

<hostname>#cp /mnt/db.<hostname>.gz /opt/

<hostname>#gzip -cd /opt/oradata.<hostname>.gz | tar -xvf -


Step 4 Reboot the system.

<hostname>#sync;sync;

<hostname>#shutdown -y -g0 -i6


Step 5 Bring up BTS application.

<hostname>#platform start


Step 6 Restore platform startup script.

<hostname>#mv /etc/rc3.d/saved.S99platform /etc/rc3.d/S99platform


Step 7 Refer to Jumpstart documentation to set up disk mirroring.

Note Cisco recommends running this procedure during maintenance window or when traffic is low.

Power Failure Recovery

One critical component of the Cisco BTS 10200 Softswitch software is the memory resident database, also referred to as Shared Memory. Shared memory can be damaged by internal/external power supply failure.

The local status indicator for the shared memory database indicates that all actions needed to synchronize this database with the Active side while on standby have been completed. This status is tested when a platform starts up as Active. If the target state is Standby, the status indicator does not affect the normal startup sequence.

Power Fail Occurs Procedure

If power failure occurs, do the following:

1. Check the state of the surviving hosts and make sure that all platforms are still running.

2. Check the alarm logs if the EMS is available.

Power is Restored Procedure

When power comes back on, the Cisco BTS 10200 Softswitch software and all platforms should power up running in duplex Active/Standby.

Step 1 Use the nodestat command to verify that all platforms are running with no failure indication.

Step 2 If the platform shuts down or fails to come up, perform the following steps to determine the cause of the problem and determine the action to resolve it:

a. Check the alarm logs to verify the system status.

b. Trace logs display the most significant events about the state of the platforms.

c. Check and analyze the logs for details that may provide the cause of the failure.

Power Failure Scenarios

The following power failure scenarios are discussed in the following sections:

Only one host of the two mated host computers is affected by the power outage.

Both mated host Call Agent computes are affected by the power outage.

Both mated host EMS computers are affected by the power outage,

All hosts computers are affected by the power outage.

Power Failure on Single Host Computer

If power failure occurs on one of the two sides while starting up a Standby platform, it can result in corrupted shared memory. The status indicator for the shared memory database will report 'shared memory database in bad state' if the Standby platform is restarted as the Active platform.

Recovery Procedure

Depending on the state of the Mate host computer, the following procedure are the alternatives on how to proceed:

No Failures on the Surviving Host

Step 1 Verify that all platforms are running as Active.

Step 2 If all platforms are running as Active, restore power. Restoring power restarts all platforms running as Standby on the failing host.

Platform Failure on the Surviving Host

Step 1 If power failure occurred while the surviving host computer is being brought up, restart the failing platform immediately (before power is restored on the other host).

Step 2 If the procedure does not work and reports a 'bad state' for the shared memory, proceed to clear the shared data area and wait for the mate to be restarted.

Step 3 When power is restored, verify that all platforms are running by entering the nodestat command on the recovering host computer.

Step 4 Restart the failing platform on the host computer that is not affected by the power outage. The platform should come up as Standby.

Platform Failure Not Due To 'Bad State' of the Shared Memory on the Mate Host Computer or Any Failure on the Recovering Host Computer

Step 1 Check the alarm logs and search for alarms belonging to the failing platforms.

Step 2 The trace logs display the most significant events about the state of the platforms.

Step 3 Check and analyze the logs for details that may provide the cause of the failure. If possible, fix the problem.

a. If the system can run in simplex, send the logs to Cisco Technical Assistance Center (TAC) for diagnosis and assistance.

b. If the system cannot run simplex, run the procedure for a duplex power failure.

Power Failure on Both Call Agent Computers

Step 1 If any platforms start, take them down first.

Step 2 Clear data directories on both sides and perform a fresh download from the EMS, as shown in the following steps. Do the following on all platforms:

a. Enter the following command:

cd <platform>/bin/data; rm *


b. Restart both sides using the following command:

platform start all


c. Do a fresh download (extract Oracle data from the EMS and send it to the Call Agent). See the Cisco BTS 10200 Softswitch Command Line Interface Guide for the commands.

d. Check transaction queue - make sure data is going from the EMS to the CA.

e. Enter the command audit db ems to make sure everything is in sync.

Step 3 Discrepancies will have to be fixed via command line interface (CLI) commands.

Caution This may take hours to complete and during this time, call processing is lost, that is why it is critical that there is no common single point of failure in the power feeds.

Power Failure on Both Element Management System Computers

Step 1 If the platforms start, shut them down first.

Step 2 Audit the Oracle database.

Step 3 Check the mysql database.

Step 4 Restart both sides using the following command:

platform start all


Step 5 Enter the command audit db ems to make sure everything is in sync.

Step 6 Discrepancies will have to be fixed via CLI commands.

Caution This may take hours to complete and during this time, call processing is lost, that is why it is critical that there is no common single point of failure in the power feeds.

Total System Power Outage

Step 1 If the platforms start, take them down first.

Step 2 Audit the Oracle database.

Step 3 Check the mysql database.

Step 4 Clear the data directories on both CallAgent sides and do a fresh download from the EMS.

Step 5 On all platforms repeat the following steps:

a. Enter the following command:

cd <platform>/bin/data; rm *


b. Restart both sides using the following command:

platform start all


c. Do a fresh download (extract Oracle data from the EMS and send it to the Call Agent). See the Cisco BTS 10200 Softswitch Command Line Interface Guide.

d. Check the transaction queue to make sure that data is going from the EMS to the CA.

e. Enter the command audit db ems to either make sure everything is in sync.

Step 6 Discrepancies will have to be fixed via CLI commands.

Caution This may take hours to complete and during this time, call processing is lost, that is why it is critical that there is no common single point of failure in the power feeds.

Element Management System Database Recovery from Hot Backup

This section provides procedures to restore your Oracle EMS database data files from the most current hot backup and then recover your database from the backup. If additional archive log backup (by ora_arch_backup.ksh) was done after the hot backup, the additional archive log backup file sets need to be restored also. All of these backup file sets are assumed to be located on the remote FTP site.

Directory to restore backup files: /opt/oraback.

The following assumptions were made for this procedure:

Daily backup schedule:

2:00 AM - daily hot backup (by ora_hot_backup.ksh process)

18:00 PM - daily archive log backup (by ora_arch_backup.ksh process)

Oracle databases on both primary and secondary EMS systems crashed completely at January 10, 2002, 20:00pm.

Recovery Goal

The goal in the scenario above is to recover the primary EMS Oracle database by using your most recent backups.

In this case, since the database crashed January 10, 2002, 20:00pm, the backup file sets with timestamp 200201100200' from 2:00am hot backup and those with timestamp 200201101800' from 18:00 archive log backup must be restored. Timestamp is formatted as YYYYMMDDhhmm.

If your database crashes before the archive log backup, you only need to restore the 2:00 am hot backup file sets.

If your system does not perform extra archive log backup daily by ora_arch_backup.ksh, use backup file sets from hot backup only.

In this sample scenario, the primary EMS database will be recovered first to resume operation. Then the secondary EMS will be recovered using the procedures that recover data from the primary EMS.

Note Before this recovery process is applied, it is assumed that the entire system, including all corrupted applications, has been restored.

Recovering the Primary Element Management System Database

Perform the following procedure on the primary EMS system to recover the primary EMS database from your most recent backup files:

Step 1 Make sure the platform is shut down and the system cron process has stopped.

Step 3 Enter the following commands to shut down the system:

platform stop all


svcadm disable svc:/system/cron


Note Execute platform stop all and stop_cron.sh on the secondary EMS also if the secondary EMS platform is active.

Step 4 Log in as oracle user, or su - oracle.

Step 5 Enter the following command to verify that there is enough free disk space:

df -k /opt/oraback


The EMS system must have enough disk space in the /opt/oraback directory to restore all database data files and archive log files. The database data files can take up to 3.6 gigabits (GB) if it is fully populated with data; each archivelog file requires 5MB additional space. The number of archivelog files in the backup set can be identified from the optical1_ora_hot_full_backup_<timestamp>.log and/or the optical1_ora_arc_incr_backup_<timestamp>.log file in /opt/oraback directory.

Step 6 Restore targeted backup file sets from the remote FTP site.

FTP the targeted database backup file sets from the remote FTP server to the /opt/oraback directory on the EMS system. Then uncompress all the .Z files.

a. Enter the following commands:

cd /opt/oraback

ftp <remote_ftp_server>


c. Enter the password (default password is ora00).

d. Enter the following commands:

ftp cd <remote_backup_directory>

ftp bin (* Use binary transfer mode *)


e. Get the following files. If archivelog backup is not performed, get only the hot backup files.

Backup files from 2:00 hot backup:

optical1_arc_full_1_167:200201100200.Z

optical1_arc_full_1_168:200201100200.Z

optical1_ctl_binary: 200201100200.Z

optical1_ctltrc:200201100200:tar.Z

optical1_hot_full_1_166:200201100200.Z

optical1_ora_hot_full_backup_200201100200.log

Back up files from the 18:00 archivelog backup:

optical1_arc_incr_1_169:200201101800.Z

optical1_ctl_binary:200201101800.Z

optical1_ctltrc:200201101800:tar.Z

optical1_ora_arc_incr_backup_200201101800.log

ftp> prompt

ftp> mget optical1*200201100200*

ftp> mget optical1*200201101800*

ftp> quit

ls *200201100200*

ls *200201101800*


f. Uncompress your files:

uncompress *200201100200*.Z

uncompress *200201101800*.Z


Note At this point all files are restored from remote ftp server in the /opt/oraback directory. You are now ready to apply the database recovery processes to bring your database up to the point of your last backup.

Step 7 Clean up old database data files by entering the following commands:

cd /data1/oradata/optical1


Note If you are on the secondary EMS, cd to /data1/oradata/optical2.

rm data/* db1/* db2/* index/*


df -k /data1/oradata


Note You must have a minimum of 3.6 GB free disk space on /data1/oradata/optical1 to accommodate all database data files from backup.

Step 8 Restore the backup binary control file to the database target directories:

Use the most current backup binary control file. In this case use the optical1_ctl_binary:200201101800 file from 18:00pm archivelog backup. If archivelog backup was not restored use the binary control file from 2:00am backup. Copy the backup binary control file to both db1/control01.dbf and db2/control02.dbf files.

cp /opt/oraback/optical1_ctl_binary:200201101800 db1/control01.ctl

cp /opt/oraback/optical1_ctl_binary:200201101800 db2/control02.ctl


Step 9 Recover the database using the recover_db_until_time.ksh script.

The recover_db_until_time.ksh script uses the restored binary control file to mount the database, restores all data files from the restored database data-sets, applies all applicable archivelog files through the restored archivelog file sets, then finally opens the database with the reset logs option and adds the temp file backup to TEMP tablespace. When this script is completed successfully, database is recovered to the point of time of the backups.

Before executing the recovery_db_until_time.ksh, shut down all Oracle instance processes.

cd /opt/oracle/admin/backup

./recover_db_until_time.ksh $ORACLE_SID  System response similar to the following is displayed: *************************************************************************************  This process will perform database recovery using RMAN backup datasets.  Target: hostname=priems16 database=optical1  You must complete the following procedures before this process:  1. platform stop all  2. stop_cron.sh  3. restore all required backup datasets to /opt/oraback directory  4. copy optical1_ctl_binary file to /data1/../<db1 and db2>  *************************************************************************************  Do you want to continue? [y/n] y << Enter y    Log file: /opt/oracle/tmp/recover_db_until_time_200201101636.log  <Thu Jan 10 16:36:51 CST 2002> ./recover_db_until_time.ksh started.  Mounting control file...  Connected to an idle instance.  ORACLE instance started.  Total System Global Area 287912096 bytes  Fixed Size 73888 bytes  Variable Size 181915648 bytes  Database Buffers 104857600 bytes  Redo Buffers 1064960 bytes  Database mounted.  Restoring all datafiles ..  RMAN> 2> 3> 4> 5> 6> 7> 8>  <Thu Jan 10 16:40:15 CST 2002> All datafiles are restored.  <Thu Jan 10 16:40:15 CST 2002> Begin to recover database.  Recover database until time '20020111 14:00:13' << until time is always the restored timestamp+1day  Last logseq=6782 thread=1  RMAN msglog file: /opt/oracle/tmp/recover_db_until_time_200201101636.log  RMAN> 2> 3> 4> 5> 6> 7> 8>  **** You can Ignore RMAN error messages regarding to: << Ignore this error message from the log file  **** MAN-08060: unable to find archivelog  **** RMAN-08510: archivelog thread=1 sequence=6783  **** .......  **** RMAN-06054: media recovery requesting unknown log:  <Thu Jan 10 16:44:27 CST 2002> Database recovery ended.  <Thu Jan 10 16:44:27 CST 2002> Alter database open resetlogs  Connected.  Database altered.  ....  Database is successfully recovered.  <Thu Jan 10 16:44:38 CST 2002> ./recover_db_until_time.ksh ended.  Post Recovery - Cold Backup Once you have recovered your database, you need to make a cold backup of the database using the dbadm -E cold_backup command. The following tar files will be created from the cold backup script. You need to save a copy of these files to the /opt/oraback directory. Make sure that the following files are saved to the offsite FTP server. /opt/oracle/tmp/optical1_DB_upd.tar.gz /opt/oracle/tmp/optical1_ADMIN_upd.tar /opt/oracle/tmp/optical1_upd.crontab Step 1 Log in as oracle, or su - oracle: Step 2 Enter the following command: dbadm -E cold_backup  Note This process can take more than 10 minutes to complete, depending on the volume of data in the database. Text similar to the following is displayed: This process performs the following tasks:  1. Shutdown optical1 database on priems09.  2. Backup /opt/oracle/admin directory (except arch dump and log).  3. Cold backup database.  4. Backup oracle crontab file.  5. Startup database.  The following backup files are generated at the end of process:  /opt/oracle/tmp/optical1_DB_upd.tar.gz  /opt/oracle/tmp/optical1_ADMIN_upd.tar  /opt/oracle/tmp/optical1_upd.crontab  Free disk space left on /opt/oracle/tmp: 1383 MB  *****************************************************************  LOG file: /opt/oracle/tmp/ora_cold_backup.log  Do you want to continue? [y/n] y  Step 3 Once the cold backup is completed, save a copy of the backup files to the /opt/oraback directory for the ftp script to transfer offsite. cd /opt/oracle/tmp  cp optical1_ADMIN_upd.tar /opt/oraback  cp optical1_upd.crontab /opt/oraback  cp optical1_DB_upd.tar.gz /opt/oraback  Step 4 Clean up the restored files in /opt/oraback directory to claim the disk space back. ls /opt/oraback/*200201100200*  ls /opt/oraback/*200201101800*  rm /opt/oraback/*200201100200*  rm /opt/oraback/*200201101800*  Step 5 Resume operations. You are now ready to shut down the Oracle database and start the platform and cron process. Step 6 Log in as root or su - root Step 7 Enter the following commands: su - root  platform stop -i oracle  platform start  svcadm enable svc:/system/cron  nodestat  The recovery of the primary EMS database is now complete. To recover the secondary EMS database, copy data from the primary EMS database. Refer to the "Recovering the Element Management System Database from Another Database". Recovering the Element Management System Database from Another Database This section provides the procedures to recover one corrupted EMS database from another active database. Recovery Procedures The steps in this section show you how to recover a corrupted EMS database from the other active peer database assuming the following scenarios (this procedure applies to both scenarios):  Scenario 1 The primary EMS database is corrupted. You would like to restore data from the secondary EMS database. Scenario 2 The secondary EMS database is corrupted. You would like to restore data from the primary EMS database. Step 1 On the active EMS site, terminate the DBHeartBeat process and disable PUSH job (job 2). a. On the active EMS site, log in as oracle, or su - oracle. b. Enter the following command to terminate DBHeartBeat process: $ dbinit -H -i stop


$ps -ef | grep hbmgr | grep -v grep  c. Disable PUSH job (job 2). $ dbadm -A disable_push_job


d. Respond y at the prompt and enter the following:

$dbadm -r get_broken_jobs  Text similar to the following is displayed: 2 Y 0 declare rc binary_integer; begin rc := sys.dbms_defer_s   ys.push(destination=>'OPTICAL1', stop_on_error=>FALSE,   delay_seconds=>0, parallelism=>1); end;  Step 2 Shut down all processes on the corrupted EMS site: a. On the corrupted EMS site, login as root. b. Stop the cron process and shut down the platform: # svcadm disable svc:/system/cron  # platform stop all  # nodestat  Verify whether all database processes are terminated:  # nodestat  # ps -ef | grep ora_  # ps -ef | grep hbmgr  # ps -ef | grep tnslsnr  Tip You can use kill -9 to kill any process not being terminated by platform stop all. # ipcs -p | grep oracle  Tip You can use the ipcrm command to remove any shared memory or semaphore still allocated to oracle now. For example: ipcrm -m <identification (ID)>, ipcrm -s <ID> Step 3 This step is optional. Save all current database logs and trace files on the corrupted EMS site. If the disk that stores the Oracle database dump and log files still exists, you can save the dump and log files to use later if needed. a. On the corrupted EMS site, log in as oracle, or su - oracle: b. Enter the following commands: $ su - oracle

$cd /data1/dump  $ tar -cvf /opt/oraback/data1_dump_corrupted.tar *

$cd /opt/oracle/tmp  $ tar -cvf /opt/oraback/opt_oracle_tmp_corrupted.tar *


Timesaver You can gzip or compress the tar files if they are very large.

Step 4 On the corrupted EMS site, rebuild the Oracle database from one of the following three options:

 Option 1 If only database is corrupted and the Cisco BTS 10200 Softswitch re-installation is not required, go to Step 5 to reload the database from the database backup file. Continue to Step 6. Option 2 If the entire system is corrupted and flash archive system backup is available, recover the system from the flash archive, as detailed in the "Flash Archive Restore" section. The flash archive backup file should have the Cisco BTS 10200 Softswitch applications included. Continue to Step 6. Option 3 If the entire system is corrupted and the flash archive backup file is not available, you must jump start the system, and reinstall the Cisco BTS 10200 Softswitch software from the installation CD, as shown below, Reinstalling the Cisco BTS 10200 Softswitch Software on the Corrupted EMS.

Reinstalling the Cisco BTS 10200 Softswitch Software on the Corrupted EMS

a. Update /etc/opticall.cfg file. You can copy this file from active EMS. Verify that the contents are correct.

b. Create the /opt/ems/utils directory, if it does not already exist. Enter the following command:

# mkdir -p /opt/ems/utils


c. FTP the file /opt/ems/utils/Version from the active EMS to the corrupted EMS, then rename the file to Version.save for reference. Enter the following commands:

# cd /opt/ems/utils

# cat Version.save

  900-xx.yy.zz.VVV


d. Enter the following commands to create the version file from Version.save, but change the version number to D00 (D zero zero). This D00 version value is only a tag; it does not affect the target version to be installed.

# sed 's/...$/D00/' Version.save > Version  # cat Version   900-xx.yy.zz.DOO  e. Change to the CD Build directory and run install.sh with the -upgrade option. Enter the following command: # ./install.sh -upgrade  Note For procedures on how to mount the installation CD and load or untar the software packages to /opt/Build, see the following sections in "Application Installation Procedure (Release 4.4)": - "Load the K9-opticall.tar(.gz) File on the EMS and CA/FS Platforms" on page 15 - "Load the K9-oracle.tar(.gz) File on the EMS" on page 23 f. After the corrupted EMS system is reinstalled, enter the commands below to shut down the platform and only start up Oracle listener and database: # platform stop all  # su - oracle  # dbinit -L -E -i start  Continue to Step 6. Step 5 Reload the database from cold backup to the corrupted EMS site. If the EMS system is intact, but only the Oracle database is corrupted, you can use the cold backup tar file to restore the database data files. The cold backup tar file optical1_DB_upd.tar.gz is for the primary EMS, and optical2_DB_upd.tar.gz is for the secondary EMS. If the tar file is not in /opt/oraback directory and the same file still exists in the /opt/oracle/tmp directory, copy this file from /opt/oracle/tmp to /opt/oraback directory. If the file does not exist on either directory, restore this file from remote FTP server to /opt/oraback directory, then execute the steps in this section to restore database data files from the cold backup tar file. Note If there is no cold backup database tar file, you can restore database from hot backup. Refer to the "Element Management System Database Recovery from Hot Backup" section to recover your database from hot backup. a. Restore the database from the cold backup tar file. Log in as oracle: If the corrupted database is the primary EMS database use the optical1_DB_upd.tar.gz file: $ cd /data1/oradata/optical1

$rm -r data/* db1/* db2/* index/*  $ gzip -cd /opt/oraback/optical1_DB_upd.tar.gz | tar xvf -


If the corrupted database is the secondary EMS database, use the optical2_DB_upd.tar.gz file:

$cd /data1/oradata/optical2  $ rm -r data/* db1/* db2/* index/*

$gzip -cd /opt/oraback/optical2_DB_upd.tar.gz | tar xvf -  b. Start the database restore process. After the database data files are re-stored, execute the following command to start up the EMS database process: $ dbinit -L -E -i start


Step 6 Stop all transactions except northbound traffic on the active EMS. From the active EMS side, stop all transactions to the database except northbound traffic and status control update from CA or FS.

Caution There is no CLI provisioning and Simple Network Management Protocol (SNMP) processes must be stopped.

b. Enter the following command:

# pkill smg3


Step 7 Copy data from the active EMS database to the corrupted database:

Caution During this step the dbadm -A copy_all process will truncate local tables first, then copy data from the tables on the other site. Make sure that you execute this step on the corrupted EMS side only.

a. On the corrupted EMS side, log in as oracle, or su - oracle.

Note Make sure that you are on the corrupted database site.

b. Enter the following command:

$dbadm -A copy_all  Text similar to the following is displayed: *****************************************************************  You are about to execute the following process:  ==> Copy all OAMP/OPTICALL/BILLING tables from remote DB optical1 at priems47  database: optical2  hostname: secems47  *****************************************************************  c. At the prompt, enter y to continue: Do you want to continue? [y/n] y  Text similar to the following is displayed: ***This will EMPTY all the tables on:  *** local host ==> secems47  *** local database ==> optical2  ***  *** Then copy data from remote DB optical1 at priems47  d. At the prompt, enter y to continue: Do you want to continue? [y/n] y  Note This process will take some time. At a database with maximum capacity, it can take approximately 2 hours to copy all operations, administration, maintenance and provisioning (OAMP) and OPTICALL tables. Response similar to the following example is displayed: <Mon Jan 24 11:40:23 CST 2005> INFO: DMMgr::Configuration loaded  <Mon Jan 24 11:40:23 CST 2005> INFO: DMMgr::243 rows updated  <Mon Jan 24 11:40:24 CST 2005> INFO: DMMgr::Disabling Foreign Key constraints for BILLING.  <Mon Jan 24 11:40:24 CST 2005> INFO: DMMgr::Disabling triggers for BILLING...  <Mon Jan 24 11:40:25 CST 2005> INFO: copy table => BILLING.BILLING_ACCT_ADDR..  <Mon Jan 24 11:40:26 CST 2005> INFO: copy table => BILLING.BILLING_ACCT_ADDR ...  ...  Mon Jan 24 11:40:28 CST 2005> INFO: copy tables => OK=3, FAIL=0, SKIP=0, OTHERS=0  <Mon Jan 24 11:40:28 CST 2005> INFO: DMMgr::Enabling Foreign Key constraints for BILLING.  <Mon Jan 24 11:40:28 CST 2005> INFO: DMMgr::Enabling triggers for BILLING...  <Mon Jan 24 11:40:29 CST 2005> INFO: DMMgr::Disabling Foreign Key constraints fo  r OAMP...  <Mon Jan 24 11:40:29 CST 2005> INFO: DMMgr::Disabling triggers for OAMP...  <Mon Jan 24 11:40:29 CST 2005> INFO: copy table => OAMP.CALL_TRACE..  <Mon Jan 24 11:40:30 CST 2005> INFO: copy table => OAMP.CALL_TRACE ...OK(0 row)  ...  <Mon Jan 24 11:41:41 CST 2005> INFO: copy tables => OK=50, FAIL=0, SKIP=0, OTHER  S=0  <Mon Jan 24 11:41:41 CST 2005> INFO: DMMgr::Enabling Foreign Key constraints for OAMP...  <Mon Jan 24 11:41:41 CST 2005> INFO: DMMgr::Enabling triggers for OAMP...  <Mon Jan 24 11:41:41 CST 2005> INFO: DMMgr::Disabling Foreign Key constraints for OPTICALL...  <Mon Jan 24 11:42:07 CST 2005> INFO: DMMgr::Disabling triggers for OPTICALL...  <Mon Jan 24 11:42:47 CST 2005> INFO: copy table => OPTICALL.AAA_SERVER_GRP..  <Mon Jan 24 11:42:48 CST 2005> INFO: copy table => OPTICALL.AAA_SERVER_GRP ...OK (0 row)  ...  Mon Jan 24 11:46:41 CST 2005> INFO: copy table => OPTICALL.WIRETAP..  <Mon Jan 24 11:46:42 CST 2005> INFO: copy table => OPTICALL.WIRETAP ...OK(0 row)  <Mon Jan 24 11:46:42 CST 2005> INFO: copy tables => OK=190, FAIL=0, SKIP=0, OTHERS=0  <Mon Jan 24 11:46:42 CST 2005> INFO: DMMgr::Enabling Foreign Key constraints for OPTICALL...  <Mon Jan 24 11:47:20 CST 2005> INFO: DMMgr::Enabling triggers for OPTICALL...  Step 8 On the active EMS, truncate all replication queues since all data are already copied over, then start the DBHeartBeat process. The DBHeartBeat process automatically enables the broken push job. From active EMS side: a. Truncate replication queues. Enter the following commands: # su - oracle  $ dbadm -A truncate_def


$dbadm -r get_unpushed_trans  Text similar to the following is displayed: no rows selected  b. Start the DBHeartBeat process. Enter the following command: $ dbinit -H -i start


$dbadm -r get_broken_jobs  Text similar to the following is displayed: 2 N 0 declare rc binary_integer; begin rc := sys.dbms_defer_sys.push(destination=>'OPTICAL1',  stop_on_error=>FALSE,delay_seconds=>0, parallelism=>1); end;  Step 9 Verify the database status and audit contents of tables. This step can be executed on either the primary or secondary EMS site. In this case, it is executed on the primary EMS site. a. On the active EMS site, log in as oracle, or su - oracle. b. Enter the following command: $ dbadm -C db


Response similar the following example is displayed:

OPTICAL1::Deftrandest is empty?

YES

OPTICAL1::dba_repcatlog is empty?

YES

OPTICAL1::Deferror is empty?

YES

OPTICAL1::Deftran is empty?

YES

OPTICAL1::Has no broken job?

YES

OPTICAL1::JQ Lock is empty?

YES


OPTICAL2::Deftrandest is empty?

YES

OPTICAL2::dba_repcatlog is empty?

YES

OPTICAL2::Deferror is empty?

YES

OPTICAL2::Deftran is empty?

YES

OPTICAL2::Has no broken job?

YES

OPTICAL2::JQ Lock is empty?

YES


Checking table => OPTICALL.AGGR....OK

 	Checking table => OPTICALL.ANI....OK

 	..

 	..



 	Number of tables to be checked: xxx

 	Number of tables checked OK: xxx

 	Number of tables out-of-sync: 0


Step 10 Synchronize table contents from the uncorrupted EMS site to the corrupted EMS site.

If the dbadm -C db command from Step 9 returns out-of-sync table(s) like the examples below, follow the commands in Step a. and Step b. (below) to synchronize the contents of data from the active EMS database to the corrupted EMS database.

Text similar to the following example is displayed:

Number of tables to be checked: 130

Number of tables checked OK: 127

Number of tables out-of-sync: 3


List of out of sync tables:

OAMP.TABLE_NAME => 22/0


In this example, one table owned by the OAMP is out of sync. Follow the steps below to synchronize the contents of the tables:

Note Execute these commands on the corrupted EMS database to synchronize the table.

Truncate the content of the table on the local database, then copy the data from the remote database, as follows:

a. Log in as oracle, or su - oracle:

b. Enter the following commands:

$dbadm -A copy -o <owner> -t <table_name>  $ dbadm -A copy -o oamp -t table_name


Step 11 Verify the Oracle crontab file:

a. Log in as oracle, or su - oracle:

b. Verify the Oracle crontab file on the corrupted EMS site. Compare the schedules of jobs with those on the active EMS site. If any schedule needs to be modified, enter the following command:

$crontab -e  Step 12 Shut down the Oracle database and start up the platform on the standby EMS sites. Both primary and secondary databases have identical data. You must start the platform and system cron processes on the standby EMS. On the corrupted EMS site, log in as root and enter the following commands to bring up the platform: # su - oracle  $ dbstat -a -f

$dbstat -j bts10200_bts_stat_daily -J enable -f  $ dbadm -s get_dbms_schedules | grep -i stat_daily | grep -i gather_bts

BTS10200_BTS_STAT_DAILY BTS10200_GATHER_BTS SCHEDULED TRUE

$exit  # platform stop -i oracle  # platform start  # svcadm enable svc:/system/cron  # su - oracle  $ dbadm -A stat_bts_job


The EMS database recovery from another database is now complete.

The Fresh Download command refreshes data in Call Agent shared memory. It recovers the data in the Call Agent shared memory in the event that shared memory data cannot be recovered by any other means. The fresh download wipes out Call Agent shared memory data and causes a total outage.

Caution Do not use this command on any live traffic production systems. Please contact Cisco TAC regarding the use of this command for disaster recovery.

You can perform the command by ID. The download by ID command allows you to copy database information from the EMS to a specific CA or FS. If a CA ID is not specified, the command copies to all IDs.

Use one of the following examples to perform a fresh download by ID.

download database target=ca; id=CA146

download database target=fsptc; id=FSPTC135

download database target= fsain; id=FSAIN125


See the Cisco BTS 10200 Softswitch Command Line Interface Reference Guide for table and token descriptions.

This call agent database download and recovery procedure is recommended as a last resort for recovering corrupted call agent databases.

Note Please contact Cisco TAC regarding the use of this procedure for call agent database recovery.

Note If transactions are stuck in the queue, execute a delete transaction-queue CLI command before beginning this procedure.

Step 1 Execute the following download database CLI commands.

CLI> download database target=ca; file=/opt/tmp/download-CA

CLI> download database target=fsain; file=/opt/tmp/download-FSAIN

CLI> download database target=fsptc; file=/opt/tmp/download-FSPTC


Step 2 Perform a platform stop all command on both call agents.

Step 3 Delete the following data directories on the primary and secondary call agents.

cd /opt/OptiCall

\rm -rf */bin/data


Step 4 Start the primary call agents or feature servers with the platform start command.

Step 5 FTP the files created in Step 1 to the primary call agent.

download-CA -ftp to-> /opt/OptiCall/CAxxx/bin

download-FSPTC -ftp to-> /opt/OptiCall/FSPTxxx/bin

download-FSAIN205 -ftp to-> /opt/OptiCall/FSAINxxx/bin


Step 6 Go into mysql on the primary call agent or feature server and upload the database as shown. This is to be done in parallel with three different sessions opened to the appropriate call agent or feature server.

a. From the /opt/OptiCall/CAxxx/bin command line:

./dbm_sql.CAxxx ./data ./catalog < download-CA


b. From the /opt/OptiCall/FSPTCxxx/bin command line:

./dbm_sql.FSPTCxxx ./data ./catalog < download-FSPTC


c. From /opt/OptiCall/FSAINxxx/bin command line:

./dbm_sql.FSAINxxx ./data ./catalog < download-FSAIN


Step 7 Start the secondary call agents or feature servers with the platform start command.

Step 8 Control all provisioned network devices to in service using manually generated return to service scripts.

Note The following steps should be run in parallel to limit the amount of down time; for example, one engineer working on returning subscribers to in service and one engineer working on returning trunks, trunk-grps, and so forth to in service.

a. Complete the following items with scripts manually created through CLI.

- control trunks oos

- control trunk-grps oos

- control h323gws oos

- unequip trunk terminations

- control h323gws ins

- control trunk-grps ins

- equip trunk terminations

- control trunks ins


b. Bring subscribers into service utilizing the cs-control tool. A script is generated with all the subscriber terminations. An example of the script is as follows:

control subscriber-termination id=sub1; mode=forced; target-state=INS

control subscriber-termination id=sub2; mode=forced; target-state=INS

control subscriber-termination id=sub3; mode=forced; target-state=INS

control subscriber-termination id=sub4; mode=forced; target-state=INS


c. Place the completed script in the /opt/OptiCall/CAxxx/bin directory on the primary call agent.

d. Invoke the cs-control script from /opt/OptiCall/CAxxx/bin directory to place subscribers in service.

cs-control data <name of script from step 8b>


Recovering Shared Memory Data

The download database command refreshes data in the Call Agent (CA) shared memory. In the event that shared memory data cannot be recovered, it recovers data in the CA shared memory. The download database command wipes out Call Agent shared memory data and causes a total outage.

Caution Read this section in its entirety before attempting this procedure.

Do not use this command on any live traffic production systems. Contact Cisco TAC regarding the use of this command for disaster recovery.

Caution Do not download the database through the console port because the TTY can cause long delays.

Downloads of the CA, FSAIN and FSPTC applications can be done in parallel.

You can perform the download database command by ID. The download by ID command allows you to copy database information from the EMS to a specific CA or Feature Server (FS). If a CA ID is not specified, the command copies to all IDs.

Use one of the following examples to download database by ID.

download database target=ca; id=CAxxx

download database target=fsptc; id=FSPTCxxx

download database target= fsain; id=FSAINxxx


See the Cisco BTS 10200 Softswitch Command Line Interface Reference Guide for table and token descriptions.

Recovering Shared Memory

Perform the following procedure:

Step 1 Check the transaction queue. Use the following command:

show transaction-queue


Step 2 If you find any transaction in the queue, delete the queue by entering the following CLI command.

Note There should be no provisioning activity on the system—if the show transaction-queue command does not return the message "Void of entries," assume that a transaction is in the queue. If there is no transaction in the queue, proceed to Step 7

delete transaction-queue target=CAxxx; transaction-id=<id>


The transaction-id parameter enables you to delete only one transaction at a time from the transaction_queue table. Note that to delete an entry from the transaction-queue, you should login as ciscouser.

Examples:

delete transaction-queue target=CAxxx; transaction-id=<id>

delete transaction-queue target=FSPTCxxx; transaction-id=<id>

delete transaction-queue target=FSAINxxx transaction-id=<id>


If there are thousands of entries stuck in the transaction queue, it is recommended to flush all the entries from Oracle after logging in as oamp user.

Perform the following steps to login as oamp user and to flush all the entries from Oracle:

Step 1 <hostname># su - oracle

Step 2 <hostname>$ sqlplus oamp/oamp Step 3 SQL> delete from transaction_queue; Step 4 SQL> commit; Step 5 SQL> exit Step 6 <hostname>$ exit

In the following example, 138327 transactions are stuck in the queue, and the display of the transactions (using the show command) is limited to 2. This example shows that when many transactions are stuck in the queue, deleting one transaction at a time takes huge amount of time. In such scenarios, it is recommended to flush all the entries from Oracle.

CLI> show transaction_queue limit=2



TRANSACTION_ID=1242510999092

SEQUENCE_NUM=0

TARGET=CA101

STATEMENT=delete from MGW_PROFILE;

TIMESTAMP=2009-05-16 17:26:39

ACTIVE_TARGET=Y

USERNAME=null

TERMINAL=null

STATUS=FAILED



TRANSACTION_ID=1242510999092

SEQUENCE_NUM=1

TARGET=CA101

STATEMENT=delete from NDC;

TIMESTAMP=2009-05-16 17:26:39

ACTIVE_TARGET=Y

USERNAME=null

TERMINAL=null

STATUS=PENDING


Reply : Success:  Entries 1-2 of 138327 returned.


If you want to delete the first transaction, enter the following command:

CLI> delete transaction_queue target=CA101;transaction_id=1242510999092;

Reply : Success: CLI delete successfully


Step 7 Enter the shared memory command to recover the CA and FS databases. Enter following CLI download database commands:

download database target=CA; file=/tmp/download-CA

download database target=FSAIN; file=/tmp/download-FSAIN

download database target=FSPTC; file=/tmp/download-FSPTC


Step 8 Stop both CA platforms. Enter the following command:

platform stop all


Step 9 Delete the following data directories (as shown below) on the primary and secondary CA and FSs. Enter the following commands:

cd /opt/OptiCall

\rm -rf */bin/data


Step 10 Use ftp to transfer the file created in Step 7 to the primary CA. Place the files in the following directories:

download-CA in /opt/OptiCall/CAxxx/bin

download-FSPTC in /opt/OptiCall/FSPTCxxx/bin

download-FSAIN in /opt/OptiCall/FSAINxxx/bin


Step 11 Start the primary CA and FS platforms. Enter the following command:

platform start


Step 12 Upload the database files using the dbm_dql tool as shown below.

Note Perform this step in parallel with three different sessions opened to the appropriate CA or FS.

The following steps may take up to 2 hours, depending on the size of the database being recovered.

a. Enter the following from the /opt/OptiCall/CAxxx/bin command line:

/dbm_sql.CAxxx ./data ./catalog < download-CA


b. Enter the following from /opt/OptiCall/FSPTCxxx/bin command line:

/dbm_sql.FSPTCxxx ./data ./catalog < download-FSPTC


c. Enter the following from /opt/OptiCall/FSAINxxx/bin command line:

/dbm_sql.FSAINxxx ./data ./catalog < download-FSAIN


Step 13 Start the secondary CA and FS platforms after Step 12 completes.

platform start


Step 14 Continue to the following procedure, Restoring Subscriber and Trunk Terminations to Service.

Restoring Subscriber and Trunk Terminations to Service

Control all provisioned network devices in service, as shown in the following subsections.

Caution You must run the following procedures in parallel, to limit the amount of down time. For example, one engineer can be working on subscribers while another engineer is working on trunks or trunk groups.

Controlling Trunks and Trunk Groups

Control trunks and trunk groups with scripts created through the following CLI commands:

CLI Command
Example

control trunks oos

control trunk-termination tgn-id=1;cic=1-24;mode=forced; target-state=oos;

control trunk-grps oos

control trunk-grp id=1;mode=forced;target-state=oos;

control h323gws oos

control h323-gw id=h323;mode=forced;target-state=oos;

unequip trunk terminations

unequip trunk-termination tgn-id=1;cic=all;

control h323gws ins

control h323-gw id=h323;mode=forced;target-state=ins;

control trunk-grps ins

control trunk-grp id=1;mode=forced;target-state=ins;

equip trunk terminations

equip trunk-termination tgn-id=1;cic=all;

control trunks ins

control trunk-termination tgn-id=1;cic=1-24;mode=forced;target-state=ins;


Using the cs-control Tool to Bring Subscribers In-Service

Use the cs-control tool to bring subscribers in-service. Obtain the cs-control tool from Cisco. You must write a script (as shown in the following example) to be used by the cs-control tool.

Example of a Script

control subscriber-termination id=sub1;mode=forced;target-state=INS

control subscriber-termination id=sub2;mode=forced;target-state=INS

control subscriber-termination id=sub3;mode=forced;target-state=INS

control subscriber-termination id=sub4;mode=forced;target-state=INS


Note The completed script will be placed in the /opt/OptiCall/CAxxx/bin directory on the primary CA.

The cs-control script is invoked from /opt/OptiCall/CAxxx/bin directory to place subscribers in-service as follows:

cs-control data <name of the script used in the step above>


Disaster Recovery Using the Automatic Shared Memory Backup

Note This procedure is for use with Cisco BTS 10200 Softswitch Release 4.5.1 and above.

The purpose of the section is to describe the procedure for restoring a BTS network element's shared memory from a backup copy created by the BTS Automatic Shared Memory Backup subsystem.

This procedure should only be run in the event of corrupted shared memory in both the Active and Standby side of the same BTS network element (NE).

Note There is an existing procedure that achieves this same end result. However, it requires a download from the EMS, which can take a relatively long time to complete. The advantage of using the procedure listed here is that the EMS is bypassed, allowing the Call Agent or Feature Server platform to be restored to an operational state in a much shorter time

Additionally, note that the data in the Automatic Shared Memory Backup (ASMB) can be up to 24 hours old. Provisioning done in the time since the backup will be restored only after an audit and sync with the EMS is completed at the end of the procedure.

Before You Begin

This procedure should only be completed if both of the following conditions are true:

Both Side A and Side B of the same Cisco BTS 10200 Softswitch network element are out of service.

Neither side of the same Cisco BTS 10200 Softswitch network element can be returned to service with a platform start command due to corrupted shared memory

If these conditions are true, then the Cisco BTS 10200 Softswitch network element should be restored to the ASMB backup copy of the shared memory. If not, then do not perform this procedure.

Before restoring your system, you must have the following:

Console access to the system to be restored

Location of the ASMB shared memory backup for the platform. This backup resides on the system in the /bin directory of each Cisco BTS 10200 Softswitch network element.

Automatic Shared Memory Backup Restore

This section describes the procedure for restoring a platform to its ASMB shared memory backup.

It is possible that multiple Cisco BTS 10200 Softswitch network elements (NEs) need to have the shared memory restored. If so, then this procedure should be executed for each one. It is recommended that the NEs be recovered (if necessary) in the following order:

Call Agent (CA)

Feature Server - POTS

Feature Server - AIN

Element Management System (EMS)

Billing Data Management System (BDMS)

The EMS and BDMS are usually hosted on a separate system from the Call Agent and Feature Servers, therefore they can be recovered in parallel with the NEs on the CA/FS system.

Additionally, all BTS NEs on one of the systems should be restored first before attempting to restore the ones on the mate. This will ensure that full service is restored as soon as possible.

Step 1 Use the console to gain access to Side A and Side B of the system with the network element(s) to be restored.

Step 2 Verify that both Side A and Side B of the NE are out of service using the nodestat command. Verify neither NE will return to service after a platform start command. If either side is in service or can be returned to service, exit this procedure.

Step 3 Choose which side of the NE to restore first. We recommend Side A as a convention, and therefore will refer to Side A in this procedure. Exit from the console of the other system.

Step 4 On Side A, run the script restoreSharedMemory. This script will remove the current, corrupted shared memory and then replace it with the ASMB backup copy. To restore the call-agent, run restoreSharedMemory -i CAxxx.

Step 5 Bring the Cisco BTS 10200 Softswitch NE back into service with the platform start command.

Step 6 Verify that the NE returns to service in the Active state using the nodestat command.

Step 7 Repeat Step 4 to Step 6 for FSPTC and FSAIN if necessary using restoreSharedMemory -i FSPTCyyy and restoreSharedMemory -i FSAINzzz.

Step 8 After all Cisco BTS 10200 Softswitch NEs are in service on Side A, perform an Audit of the EMS system database to the CA/FS system database. The Audit will report any differences between the two system databases. Because the data in the CA/FS shared memory backup can be up to 24 hours old, it is likely there will be differences. These should then be resolved with a Sync of the EMS database to the CA/FS database.

Step 9 Perform some test calls to verify that full functionality is provided by the Cisco BTS 10200 Softswitch after all NEs on Side A have been completely restored. If there are any problems, contact Cisco TAC immediately.

Step 10 Next, the mate Side B network elements that are out of service need to be restored. For each network element that needs to be restored on Side B, remove its shared memory directory (/../bin/data) using the unix rm command. This should only be done for network elements that are out of service. Start the down NE(s) with the platform start command. The network element(s) will start and copy the shared memory database from their Active Side A network element mate(s).

Step 11 Verify that the mate Side B network elements have all returned to service in the Standby state using the nodestat command.

Restore Shared Memory Script

This section describes actions performed by the restoreSharedMemory script. The restoreSharedMemory script completes these actions automatically. These steps do not need to be performed by the user as part of the recovery procedure.

Step 1 Verifies that the platform is OOS-FAULTY. This procedure should not be run otherwise.

Step 2 Verifies that the installed software version matches the software version of the ASMB shared memory backup copy to be used. The ASMB backup has the software version and timestamp in its name. For example: data.bak.900-04.05.01.V14.2006_08_29__02_00_06

Step 3 Renames the current, corrupted shared memory data directory to keep for potential offline debugging. The software version and the current time are used in the name. For example: data.corrupt.900-04.05.01.V14.2006_09_01__00_21_50

Step 4 Copies the most recent ASMB shared memory backup copy to the data directory for the Cisco BTS 10200 Softswitch NE being restored.