Managing Serviceguard Extension for SAP on Linux (IA64 Integrity and x86_64), February 2008

Step-by-Step Cluster Conversion
Database Configuration
Chapter 3168
OR870 Oracle Database Step:
Copy $ORACLE_HOME/network/admin/tnsnames.ora to all additional
application server hosts. Be careful if these files were customized after
the SAP installation.
OR880 Oracle Database Step:
Be sure to configure and install the required Oracle NLS files and client
libraries as mentioned in section Oracle Storage Considerations included
in chapter Planning the Storage Layout. Also refer to SAP OSS Note
180430 for more details.
OR890 Optional Step:
If you use more than one SAP system inside of your cluster:
It is possible that more than one database is running on the same node.
Even though one listener is capable of serving many database instances
problems can occur in switchover environments because needed file
systems may not be available at the startup time of the listener. Use a
dedicated listener process for each database.
You can use the standard file that is created during the installation of
one SAP system <SID1> as a template. Double its contents, for example:
cat listener.ora listener.ora >listener.ora.new
mv listener.ora.new listener.ora