Managing Serviceguard Extension for SAP Version B.05.10, December 2012

The executable directory is substituted by a link referencing another local symbolic link that
distinguishes between a HP 9000 or Integrity based system.
cd /sapmnt/<SID>
ln -s /sapmnt/<SID>exe_local exe
Take note that the referenced local executable link does not reside on the shared disc—it is on the
local file system on each cluster node pointing to the appropriate executables for a HP 9000 or
Integrity platform. In that case for a HP 9000 system:
cd /sapmnt
ln -s /sapmnt/<SID>/exe_pa/sapmnt/<SID>exe_local
System Configuration Change: PI040
Similar to the local executable link on HP 9000 systems, perform the step for the Integrity node:
cd /sapmnt
ln -s /sapmnt/<SID>exe_ipf<SID>exe_local
System Configuration Change: PI050
Make sure to have a local copy of the Oracle client libraries on all nodes.
You'll need to download the HP 9000 version for the PA RISC nodes and the IPF version for the
Integrity nodes from http://service.sap.com.
Currently Oracle does not support the failover of databases based on HP 9000 binaries to nodes
using executables compiled for the Integrity platform. Consequently, this means the use of an Oracle
database package in a mixed environment is restricted to one platform. Therefore, the database
package must be kept either on purely HP 9000 or Integrity nodes. The installation and configuration
of a database package should have been done already, as mentioned in the prerequisites. Oracle
database servers at least need to match the version number of the used Oracle client libraries.
Mixed clusters are only possible using Oracle 9i versions because the Integrity executable set of
the SAP kernel uses Oracle 9i client libraries. The SAP kernel acts as an Oracle client. As a
consequence, Oracle 8 database releases need to be upgraded before they can be used in mixed
cluster setups. HP recommends to use the highest database server patch level that is supported for
the used SAP component. This will be at least Oracle 9.2.0.3. It is not possible to use a HP 9000
based Oracle 8 database for environments that might serve SAP components on IPF.
Mixed Clusters 29