Online change and HALDB databases

DBD changes for HALDB databases can be implemented in online systems with online change.

The database cannot be in use during the online change process. You should stop access to the entire HALDB database by issuing either a /DBRECOVERY DB HALDB_master_name command or an UPDATE DB NAME(HALDB_master_name) STOP(ACCESS) command.

After the DBD change is committed, you can resume access to the database by issuing either a /START DB HALDB_master_name command or a UPDATE DB NAME(HALDB_master_name) START(ACCESS) command. DBD changes affect every partition, so the master database name must be used for these commands.

Restriction: If you delete a database name from IMS using online change, you cannot reuse that name for another HALDB partition without first performing a cold start. Similarly, if you delete a partition name from the RECON data set, you cannot use online change to reuse that name for another database without first performing a cold start.