IBM V7.2 Standby database scenario, Usr/opt/ibm2105cli/rsExecuteTask.sh -v -s Esscss ts1dbdata

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Standby database scenario

This scenario starts with the SAP R/3 system TS1 running on the Primary server. On the Backup server, TS1 is stopped and the DB2 filesystems for data and logs are unmounted. This scenario assumes that the FlashCopy pairs and tasks are already defined on the ESS Copy Services Server.

Because the standby scenario requires logs from the Primary database to be applied to the Backup database, configure the SAP DB2 userexit program to copy the log files to the Backup server. Ship the archive logs to the Backup server so that the Backup database can apply these logs. To do this:

1.NFS-mount the log directory of the Backup system (TS1 on MACHB).

2.In the configuration file initTS1.db6 in the directory /usr/sap/TS1/SYS/global set the value of the variable DB2DB6_STANDBY_DIR to the NFS-mounted log directory of the target system.

For more details on how to configure the SAP DB2 administration tools, see the SAP manual SAP Database Administration Guide: IBM DB2 Universal Database for UNIX and Windows that is also available at http://service.sap.com/installguides.

1.Issue the suspend command on the Primary database: db2 “connect to ts1”

db2 “set write suspend for database”

2.Flash the data pairs from the Primary server:

/usr/opt/ibm2105cli/rsExecuteTask.sh –v –s ESSCSS ts1dbdata

Attention: For this scenario, do not copy or make available to the Backup server the /db2/TS1/log_dir file system on the Primary server at this point.

3.Wait for the FlashCopy task to finish.

4.Issue the resume command from the same connection used in step 1: db2 “set write resume for database”

5.Mount the data filesystem on the Backup server:

mount /db2/TS1/db2ts1/NODE0000 mount /db2/TS1/sapdata1 mount /db2/TS1/sapdata2 mount /db2/TS1/sapdata3 mount /db2/TS1/sapdata4 mount /db2/TS1/sapdata5 mount /db2/TS1/sapdata6 mount /db2/TS1/sapdata7

Standby Database Scenario

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Contents October Page Trademarks AIX DB2Table of contents Abstract About the authors DB2 UDB suspended I/O overview Set write resume DB2 UDB commandsSet write suspend Db2inidbDB2 UDB commands Overview of IBM 2105 Enterprise Storage Server Overview of Copy Services Overview of FlashCopy Overview of the ESS Copy Services Web interface Overview of ESS Command Line Interface CLI ESS Copy Services CLI command description SAP software Usr/sap SID transPage Sample configuration of SAP R/3 with DB2 UDB and IBM ESS Conceptual overviewInstalling the Command Line Interface on AIX Installing Advanced Copy ServicesCreating and assigning ESS logical volumes Lsdev -C grep Cd /usr/opt/ibm2105cli RsList2105s.shConfiguring a system with two hosts ESS volumes Logical subsystem Configuring a Two Host System # smit vg -Add a Volume Group Create volume groupsAdd a Volume Group Create logical volumesAdd a Logical Volume -VOLUME Group name dbvg Mklv -y saplv sapvg #smit lvCreate file systems #smit fsCrfs -v jfs -d saplv -m /usr/sap -A yes -p rw #smit fs Mount /usr/sap Chfs -a size=14000000 /db2/TS1/db2ts1/NODE0000Chown ts1admsapsys /usr/sap Usr/sap/TS1/SYS/profile as follows Usr/opt/ibm2105cli/rsExecuteTask.sh -v -s Esscss Ts1sapDb2 catalog db TS1 on /db2/TS1 Usr/opt/ibm2105cli/rsExecuteTask.sh -v -s Esscss ts1db Snapshot database scenarioDb2 set write suspend for database Db2inidb ts1 as snapshotSnapshot Database Scenario Standby database scenario Usr/opt/ibm2105cli/rsExecuteTask.sh -v -s Esscss ts1dbdataDb2 rollforward database ts1 to end of logs Db2inidb ts1 as standbyUsr/opt/ibm2105cli/rsExecuteTask.sh -v -s Esscss Ts1dblog Db2 rollforward database ts1 to end of logs and stop Split-Mirror online backup scenario Db2 connect to ts1 Db2 set write suspend for databaseUsr/opt/ibm2105cli/rsExecuteTask.sh -v -s Esscss ts1dbwd Db2 backup database ts1 to /backupfsDb2 restore database ts1 from /backupfs Db2 rollforward database ts1 to end of logs and stop orStartsap Split-mirror restore scenario Db2 set write resume for databaseMount /db2/TS1/sapdata6 mount /db2/TS1/sapdata7 Db2inidb ts1 as mirror

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