How to Set Up a Lock File for Central Instance

To set up a central instance lock file, perform the following steps.

1. Install the latest patch for the sapstart executable, which enables Sun Cluster HA for SAP users to configure a lock file.

2. Set up the central instance lock file on a cluster file system.

3. Edit the profile SC3_DVEBMGS00 to add the new SAP parameter, sapstart/lockfile, for the application server.

   sapstart/lockfile =/usr/sap/SC3/DVEBMGS00/work/startup_lockfile

   sapstart/lockfile

   New parameter name.

   /usr/sap/local/SC3/DVEBMGS00/work

   Work directory for the application server.

   startup_lockfile

   Lock file name that Sun Cluster HA for SAP uses.

   SAP creates the lock file.

   ---

   only -

   You must locate the lock file path on a cluster file system. If you locate the lock file path locally on the nodes, startups of the same instance from multiple nodes cannot be prevented.

   ---