Verifying the HA for SAP MaxDB Installation and Configuration

After you install, register, and configure HA for SAP MaxDB, verify the HA for SAP MaxDB installation and configuration. Verifying the HA for SAP MaxDB installation and configuration determines if the HA for SAP MaxDB data service makes the SAP MaxDB application highly available.

Verifying the HA for SAP MaxDB installation involves verifying the operation of the following fault monitors:

• The SAP MaxDB fault monitor

• The SAP xserver fault monitor

How to Verify the Operation of the SAP MaxDB Fault Monitor

Perform this procedure on each node where SAP MaxDB can run.

1. Assume a root role to a node or zone that can master the SAP MaxDB resource group.
2. Switch the SAP MaxDB resource group to the node or zone that you logged in to in Step 1.

   # clresourcegroup switch -n node sapdb-rg

   node

   Specifies the node to which the SAP MaxDB resource group is to be switched

   sapdb-rg

   Specifies the name of the SAP MaxDB resource group is to be switched to another node

3. Abnormally terminate SAP MaxDB.
   1. Determine the process identities of all kernel processes for the SAP MaxDB database instance that you are running.

      # ps -ef | grep kernel | grep db-name

      db-name

      Specifies the name of the SAP MaxDB database instance in uppercase

   2. Kill all kernel processes for the SAP MaxDB database instance that you are running.

      # kill -9 sapdb-kernel-pid

      sapdb-kernel-pid

      Specifies the process identities of the SAP MaxDB kernel processes that you determined in Step a

4. Confirm that the HA for SAP MaxDB fault monitor performs the appropriate operation from the following list:

   • Restarting the SAP MaxDB resource

   • Failing over the SAP MaxDB resource to another node

   The expected behavior of the fault monitor depends on the failure history of the resource and the value of the Failover_enabled extension property. For more information, see the following sections:

   • Tuning the HA for SAP MaxDB Fault Monitors

   • SUNW.sapdb Extension Properties

5. Terminate SAP MaxDB normally.
   1. Become the OS user who administers the SAP MaxDB database.

      # su - os-sapdb-adm-user

      os-sapdb-adm-user

      Specifies the UNIX user identity of the OS user who administers the SAP MaxDB database. This user's home directory contains the .XUSER.62 file that was created during the installation and configuration of SAP MaxDB. For more information, see Installing and Configuring SAP MaxDB. You specify this user when you set the DB_User extension property as explained in How to Register and Configure a SAP MaxDB Resource.

   2. Manually stop the SAP MaxDB database instance.

      # dbmcli -U sapdb-adm-key db_offline

      -U sapdb-adm-key

      Specifies that the dbmcli command is run with the user key of the database user who administers the SAP MaxDB database. This user key is created during the installation and configuration of SAP MaxDB. For more information, see Installing and Configuring SAP MaxDB. You specify this user key when you set the User_Key extension property as explained in How to Register and Configure a SAP MaxDB Resource.

6. Confirm that the HA for SAP MaxDB fault monitor performs the appropriate operation from the following list:

   • Restarting the SAP MaxDB resource

   • Failing over the SAP MaxDB resource to another node

   The expected behavior of the fault monitor depends on the failure history of the resource and the value of the Failover_enabled extension property. For more information, see the following sections:

   • Tuning the HA for SAP MaxDB Fault Monitors

   • SUNW.sapdb Extension Properties

How to Verify the Operation of the SAP xserver Fault Monitor

Perform this procedure on each node that can master SAP xserver.

1. Log in to a node or zone that can master SAP xserver.
2. Abnormally terminate SAP xserver.
   1. Determine the process identities of all SAP xserver processes.

      # ps -ef | grep vserver

   2. Kill all SAP xserver processes.

      # kill -9 xserver-pid

      xserver-pid

      Specifies the process identities of the SAP xserver processes that you determined in Step a

3. Confirm that the SAP xserver fault monitor restarts the SAP xserver resource.
4. Terminate SAP xserver normally.
   1. Become the OS user who administers SAP xserver.

      # su - os-sapxsrvr-adm-user

      os-sapxsrvr-adm-user

      Specifies the UNIX user identity of the OS user who administers SAP xserver. By default, this user is root. You can specify this user by setting the Xserver_User extension property. For more information, see SUNW.sap_xserver Extension Properties.

   2. Manually stop the SAP xserver.

      # x_server stop

5. Confirm that the SAP xserver fault monitor restarts the SAP xserver resource.