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

Step-by-Step Cluster Conversion
Serviceguard Extension for SAP on Linux Configuration – sap.config
Chapter 3152
considered to be non-critical. In certain setups, it is necessary to free up
resources on the failover node to allow the failover to succeed. Often, this
includes stopping less important SAP Systems, namely consolidation or
development environments. If any of these instances is a Central
Instance, it might be that there are additional Application Servers
belonging to it. Not all of them are necessarily running locally on the
failover node. They can optionally be stopped before the Central Instance
gets shut down. This mechanism replaces the deprecated
SERVER_CONSOLIDATION variable and the RM* arrays of earlier SGeSAP
3.x versions.
•In the ASSID[*]-array specify the SAP System IDs of the instances
that should be treated with the package. Making this a configurable
option allows to specify instances that belong to the clustered SAP
components. It also allows specification of different SIDs for less
critical SAP applications.
•In the ASHOST[*]-array, refer to the hosts on which the instances
reside – this can be either inside or outside of the cluster.
•The ASNAME[*]-array holds the instance names. These names are
built by the abbreviations of the services that are offered by the
Application Server. The name of a Dialog instance usually is D, the
name of a Central Instance often is DVEBMGS.
•The ASNR[*]-array contains the instance IDs. If the corresponding
ASHOST-entry specifies a host that is part of the cluster, be sure to
provide an ID that is different form the IDs used by any packaged
instance. You should also make sure that there is no other SAP
instance on the same host is using that ID.
•The ASTREAT[*]-array defines the way the instance is treated if the
status of the package changes. There are five different values that
may be configured in any combination: START_WITH_PKG,
STOP_WITH_PKG, RESTART_DURING_FAILOVER,
STOP_IF_LOCAL_AFTER_FAILOVER, STOP_DEPENDENT_INSTANCES.
— ASTREAT[*]=0 means that the Application Server is not affected
by any changes that happens to the package status. This value
makes sense to (temporarily) unconfigure the instance.
— ${START_WITH_PKG}: Add 1 to ASTREAT[*] if the Application
Server should automatically be started during startup of the
package.