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

Step-by-Step Cluster Conversion

SAP WAS System Configuration

Chapter 3 177

The instance profile name is often extended by the hostname. You do not

need to change this filename to include the relocatible hostname.

Serviceguard Extension for SAP on Linux also supports the full instance

virtualization of SAPWAS 6.40 and beyond. The startsap mechanism

can then be called by specifying the instance’s virtual IP address. For

this case, it is required to use the virtual IP addressing in the filenames

of the instance profile and instance start profile. All references to the

instance profiles that occur in the start profile need to be changed to

include the virtual IP address instance profile filename.

SAPLOCALHOST is set to the hostname per default at startup time and is

used to build the SAP application server name:

This parameter represents the communication path inside an SAP

system and between different SAP systems. SAPLOCALHOSTFULL is used

for rfc-connections. Set it to the fully qualified hostname.

The application server name appears in the server list held by the

Message Server, which contains all instances, hosts and services of the

instances. The application server name or the hostname is also stored in

some system tables on the database.

IS1130 Installation Step:

If you cluster a single-instance database, you need to maintain the

transport management parameters. In the transport directory parameter

file(s), e.g. /usr/sap/trans/bin/TPPARAM, modify the dbhost entry as

follows:

<SID>/dbhost = <relocdb>

IS1140 Optional Step:

If you have already received your licenses from SAP install them on all

the nodes where the Central Instance can start. Refer to the

Serviceguard Extension for SAP Release Notes for further information on

how to do this. The package comes up without a license, too. But certain

restrictions apply to the SAP application.

SAP will now be ready to run on all cluster nodes. Test the manual

startup on all adoptive nodes.