Configuration Restrictions

Configuration restrictions are planned and are related to design decisions. Your data service configuration might not be supported if you do not observe these restrictions.

For restrictions that apply to all data services, see the release notes for your release of Sun Cluster at http://docs.sun.com. The following configuration restriction applies only to Sun Cluster HA for SAP Web Application Server.

The following configuration restrictions apply only to Sun Cluster HA for SAP Web Application Server.

• The maximum length of the node names depends on the SAP release. Refer to the SAP installation guide for your release of SAP. This limitation is an SAP software restriction.

• Configure the database resource to be in a different resource group from the SAP enqueue server resource, if possible.

  However, if you are using Oracle as the database, and if you must configure Oracle in the same resource group as the SAP enqueue server resource, you must ensure that the value of the restart_type extension property for Sun Cluster HA for Oracle is set to RESOURCE_RESTART. This property setting means that if the response to a fault in the Oracle database is to restart the Oracle resource, only the Oracle database is restarted. If this property is set to RESOURCE_GROUP_RESTART, and if the response to a fault in the Oracle database is to restart the Oracle resource, all the resources in the resource group are restarted. However, if the SAP replica server is configured and online on another node, the SAP enqueue server cannot be restarted locally. Therefore, the restart_type property must be set to RESOURCE_RESTART.