IBM V7.2 Snapshot database scenario, Db2 set write suspend for database, Db2inidb ts1 as snapshot

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Snapshot database scenario

This scenario starts with SAP R/3 system TS1 running on the Primary server and clients using the Primary database. The Backup server has TS1 and DB2 stopped and DB2 file systems for data and logs unmounted.

1.From the Primary Server issue the suspend command on the Primary database: db2 “connect to ts1”

db2 “set write suspend for database”

2.Execute the FlashCopy task ts1db for flashing the data and log file systems from the Primary server as root user:

/usr/opt/ibm2105cli/rsExecuteTask.sh –v –s ESSCSS ts1db

The –v option indicates verbose mode, the –sparameter specifies the hostname of the Copy Services Server. Wait for rsExecuteTask to return.

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

4.From the Backup server, mount the file systems:

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 mount /db2/TS1/log_dir

5.Start the DB2 instance db2ts1 on the Backup server: db2start

6.The following command performs crash recovery on the database and takes it

out of a suspended state :

db2inidb ts1 as snapshot

The database on the Backup server is now in a transactionally consistent state at the time the suspend command was issued against the Primary database.

7. Start the SAP system TS1 by logging on as user ts1adm on the Backup server and issuing the following command:

startsap

8.To reconfigure the transport system for the new host, log on to the SAP system and execute transaction STMS.

If a new snapshot image is desired, stop the SAP system TS1 on the Backup server and unmount the /db2/TS1/… file systems. Then, withdraw the existing FlashCopy pairs by executing the task ts1dbwd (if they had been flashed using the no copy option). Then re-establish the FlashCopy pairs and execute the above steps again.

Snapshot Database Scenario

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Contents October Page Trademarks AIX DB2Table of contents Abstract About the authors DB2 UDB suspended I/O overview DB2 UDB commands Set write suspendSet write resume 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 overviewCreating and assigning ESS logical volumes Installing Advanced Copy ServicesInstalling the Command Line Interface on AIX 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 Chown ts1admsapsys /usr/sap Chfs -a size=14000000 /db2/TS1/db2ts1/NODE0000Mount /usr/sap Usr/sap/TS1/SYS/profile as follows Usr/opt/ibm2105cli/rsExecuteTask.sh -v -s Esscss Ts1sapDb2 catalog db TS1 on /db2/TS1 Snapshot database scenario Db2 set write suspend for databaseUsr/opt/ibm2105cli/rsExecuteTask.sh -v -s Esscss ts1db Db2inidb ts1 as snapshotSnapshot Database Scenario Standby database scenario Usr/opt/ibm2105cli/rsExecuteTask.sh -v -s Esscss ts1dbdataUsr/opt/ibm2105cli/rsExecuteTask.sh -v -s Esscss Ts1dblog Db2inidb ts1 as standbyDb2 rollforward database ts1 to end of logs Db2 rollforward database ts1 to end of logs and stop Split-Mirror online backup scenario Db2 connect to ts1 Db2 set write suspend for databaseDb2 backup database ts1 to /backupfs Db2 restore database ts1 from /backupfsUsr/opt/ibm2105cli/rsExecuteTask.sh -v -s Esscss ts1dbwd 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

V7.2 specifications

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