Managing Serviceguard Extension for SAP Version B.05.10, September 2010

To add an SAP instance to the Configured SAP Instances list, enter information into the SAP
Instance, Virtual Hostname, and Replicated Instance input fields, and then click <<Add to move
this information to the Configured SAP Instances list.
To clear the input fields, click Reset Input Fields.
Figure 3-3 The sapinstance module configuration screen: Three instances are already selected
to become configured in the package. Four more are detected and get offered in the drop down
box.
A SAP Instance defines any SAP Netweaver Application Server instance based on the SAP ABAP
technology-stack, the SAP JAVA technology-stack or a combination of both. All parts of the
instance are packaged together as a single entity. This includes instance parts like icman,
workprocesses, SAP JVMs or an IGS. System Central Service instances or the corresponding
Enqueue Replication Service instances can also be specified. SAP instances are defined by
specifying the instance name and instance number.
The Virtual Hostname parameter corresponds to the virtual hostname that got specified during
SAP installation. The SAP virtual hostname is a string value. It is not possible to specify the
corresponding ipv4 or ipv6 address. If the string is empty, the DNS resolution of the first specified
package ip_address parameter will be substituted. In this case, the script only works properly
if reliable address resolution is available. Domain name extensions are not part of the virtual
hostname. SAP Enqueue Replication Service instances (ERS) have the purpose to keep track of
the runtime status of a SAP Central Service instance. They allow for a more seamless failover
experience. For each SAP Replication Service that is part of the package, the corresponding,
replicated Central Service instance, needs to be specified in the Replicated_Instance field.
GI040 Select the database that is to be clustered (sgesap/sapdatabase module).
These settings determine the name of the database (schema) for SAP. Optionally,
listener_name can be set if the Oracle listener is defined with a name different from the
default value LISTENER.
66 Step-by-Step Cluster Conversion