Managing Serviceguard Extension for SAP on Linux (IA64 Integrity and x86_64), April 2009

Sometimes, SAP upgrades come with additional configuration options. Such an option for example could
be ASCS (ABAP SAP Central System) or the Replicated Enqueue Refer to Chapter Three on how to configure
packages with additional SAP components.
Switching Serviceguard Extension for SAP on Linux Off and On
This section provides a brief description of how to switch off Serviceguard Extension for SAP on Linux. Your
individual configuration may require additional steps that are not included in this document. Note that when
Serviceguard Extension for SAP on Linux is completely shutdown and disabled the virtual IP addresses of
the Serviceguard Extension for SAP on Linux packages are not available any more. The basic steps will be:
1. Halt all Serviceguard Extension for SAP on Linux packages
2. Create the debug file ${SGCONF}/debug for the next step
3. Start the Serviceguard Extension for SAP on Linux packages in debug mode. This mode only mount the
storage volumes and enables the relocatable IP addresses bus does not start the SAP instances.
4. Replace the relocatable IP addresses with the real IP addresses in the SAP profiles
Switching Off Serviceguard Extension for SAP on Linux
Perform the following steps to unconfigure Serviceguard Extension for SAP on Linux:
Unconfigure Serviceguard Extension for SAP on Linux: SO010
If any Serviceguard Extension for SAP on Linux packages are still running, halt them using:
cmhaltpkg <package>
Unconfigure Serviceguard Extension for SAP on Linux: SO020
Turn on the debug mode of the Serviceguard Extension for SAP on Linux Integration. Create the debug file
${SGCONF}/debug .
Then Serviceguard will mount all the file systems and enable relocatable IP addresses for the packages, but
will not start the database or SAP instances.
If you have more than one SAP application within the cluster you can also turn on debug mode for specific
systems. If the file ${SGCONF}/<SID>/debug exists, the additional scripts for this system are not started.
Unconfigure Serviceguard Extension for SAP on Linux: SO030
Start the package(s) with:
cmrunpkg <package>
Unconfigure Serviceguard Extension for SAP on Linux: SO040
Save the configuration files that are going to be changed so you can switch on Serviceguard Extension for
SAP on Linux again by just copying back the original files. This list of files you have to save include:
/usr/sap/trans/bin/TPPARAM
/usr/sap/<SID>/SYS/profile/DEFAULT.PFL
/usr/sap/<SID>/SYS/profile/<SID>_DVEBMGS<INSTNR>
If an Oracle database is used, the following files also need to be saved:
listener.ora tnsnames.ora
Unconfigure Serviceguard Extension for SAP on Linux: SO050
All references to relocatable IP addresses and names must be changed to the real hostname in the list of
files given in the step SO040.
Unconfigure Serviceguard Extension for SAP on Linux: SO070
Start all SAP Instances and the database as <sid>adm .
NOTE: The automounter is still using the relocatable IP-addresses. You do not need to turn off the
automounter. Serviceguard and the packages remain running and provide all necessary resources.
• Import the profiles with SAP ABAP Engine transaction code: RZ10.
• Check SAP setup. Ping(1M) to all application servers from the Central Instance and the other way round.
Transaction code: SM59
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