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Sun Cluster 3.0 12/01 Release Notes Supplement

How to Register and Configure Sun Cluster HA for SAP for Scalable Application Server

Use this procedure to configure Sun Cluster HA for SAP for a scalable application server.

  1. Become superuser on one of the nodes in the cluster that hosts the application server.

  2. Create a scalable resource group for the application server.


    # scrgadm -a -g sap-as-sa-appinstanceid-resource-group \
-y Maximum_primaries=value \
-y Desired_primaries=value
    Note -

    You will not use the shared address to perform load balancing of the application server. The SAP Message Server will be used to perform load balancing of the application server.

    Note -

    If you are using the SUNW.RGOffload resource type to offload an application server within this scalable application server resource group, then set Desired_primaries=0. See "Freeing Node Resources by Offloading Non-critical Resource Groups" on page 363 of the Sun Cluster 3.0 12/01 Data Services Installation and Configuration Guide for more information about using the SUNW.RGOffload resource type.

  3. Register the resource type for the scalable application server.


    # scrgadm -a -t SUNW.sap_as_v2

  4. Create SAP application server resources in this scalable resource group.


    # scrgadm -a -j sap-as-resource -g sap-as-sa-appinstanceid-resource-group \

-t SUNW.sap_as_v2 \

-x SAPSID=SAPSID \

-x As_instance_id=as-instance-id \

-x As_startup_script=as-startup-script \

-x As_shutdown_script=as-shutdown-script

    See "Sun Cluster HA for SAP Extension Properties" for a list of extension properties.

  5. Enable the scalable resource group that now includes the SAP application server resource.

    • If you do not use the RGOffload resource type with this application server, use the following command.


      # scswitch -Z -g sap-as-sa-appinstanceid-resource-group

    • If you use the RGOffload resource type with this application server, use the following command.


      # scswitch -z -h node1, node2 -g sap-as-sa-appinstanceid-resource-group
    Note -

    If you use the SUNW.RGOffload resource type with this application server, you must specify which node you want to bring the resource online by using the -z option instead of the -j option.

Where to Go From Here

Go to "How to Verify the Installation and Configuration of Sun Cluster HA for SAP, Central Instance, and DBMS".