Sun Cluster Data Service for SAP Web Application Server Guide for Solaris OS

This section describes omissions in Sun Cluster Data Service for SAP Web Application Server Guide for Solaris OS.

Referring to SAP Notes for Changing Host Names

When changing any reference to the host name of the system, refer to the corresponding SAP notes. The SAP notes contain the most recent information about changing host names. Sun Cluster Data Service for SAP Web Application Server Guide for Solaris OS omits specific references to these SAP notes.

The following sections explain how to change the host name.

• How to Install and Configure the SAP Web Application Server and the SAP J2EE Engine in Sun Cluster Data Service for SAP Web Application Server Guide for Solaris OS

• How to Modify the Installation for a Scalable SAP Web Application Server Component in Sun Cluster Data Service for SAP Web Application Server Guide for Solaris OS

Installing the SAP J2EE Engine as a Scalable Resource

The section How to Install and Configure the SAP Web Application Server and the SAP J2EE Engine in Sun Cluster Data Service for SAP Web Application Server Guide for Solaris OS omits instructions for installing the SAP J2EE engine when you plan to configure it as a scalable resource. Step 2 and Step 7 of the procedure in this section are incomplete.

Correct Step 2:

If you are using the SAP J2EE engine, install the SAP J2EE engine software.

Refer to the SAP installation documentation.

• If you plan to configure the SAP J2EE engine as a failover resource, install the SAP J2EE engine software on the same node where you installed the SAP Web Application Server software in Step 1.

• If you plan to configure the SAP J2EE engine as a scalable resource, install the SAP J2EE engine software on each node that can master the scalable resource. Install the SAP J2EE dialog instance with the same SAP system number on each node. This number is the value of SAPSYSTEM in the SAP profile.

Correct Step 7:

If you are using the SAP J2EE engine, modify the loghost script to return host names for the SAP J2EE engine.

Modify the script loghost, which was created in Step 6, to return either the logical host names or the physical host names for each instance of the SAP J2EE engine.

• If you plan to configure the SAP J2EE engine as a failover resource, modify the script to return the logical host names. The following commands provide an example of the modification of this script.

  if [ "$1" = "JC00" ]; then echo loghost-4; fi if [ "$1" = "SCS02" ]; then echo loghost-5; fi if [ "$1" = "J02" ]; then echo loghost-6; fi

• If you plan to configure the SAP J2EE engine as a scalable resource, modify the script to return the physical host names. The following commands provide an example of the modification of this script.

  if [ "$1" = "J03" ]; then echo `hostname`; fi