IBM V7.2 manual Sample configuration of SAP R/3 with DB2 UDB and IBM ESS, Conceptual overview

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Sample configuration of SAP R/3 with DB2 UDB and IBM ESS

In this configuration, we will work with a standard SAP R/3 installation and describe the following different scenarios that use the DB2 UDB split mirror functionality:

Creating a clone SAP system (Snapshot database scenario on page 26)

Creating a standby SAP database (Standby database scenario on page 28)

Creating a split mirror copy of the SAP R/3 database for backup and restore (Split-Mirror online backup scenario on page 31)

Creating a split mirror copy of the SAP R/3 database that can be copied over the primary database (Split-mirror restore scenario on page 3433 )

Figure 1 provides the conceptual overview of the sample configuration.

Primary Backup

Server Server

Snapshot for reporting, testing, etc.

Hot Standby

Offloading database backups

Database restore

SAP R/3

FlashCopy

SAP R/3

System

+ change profiles

System

TS1

TS1

 

TS1

FlashCopy

TS1

Database

 

Database

IBM ESS F20

Figure 1. Conceptual overview

As Figure 1 shows, there are two AIX hosts: one as the Primary Server, the other as the Backup server.

Ten ESS logical volumes are attached to each system. One logical volume is used for the SAP system software and configuration files, the others for the database. Two

SAP R/3 with DB2 UDB and ESS Sample Configuration

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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 Advanced Copy Services Installing the Command Line Interface on AIXCreating 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 Chfs -a size=14000000 /db2/TS1/db2ts1/NODE0000 Mount /usr/sapChown 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 ts1dbdataDb2inidb ts1 as standby Db2 rollforward database ts1 to end of logsUsr/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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