Adding MSDB databases dynamically to an online IMS system

The procedure for adding an MSDB database to an online IMS system by using dynamic resource definition is different than the procedure for adding other database types.

Procedure

  1. Perform the DBDGEN and ACBGEN process for the MSDB database.
  2. Copy the ACB staging library to the inactive ACB library.
  3. Execute a full ACBLIB online change. The member-level online change function for the ACB library does not support MSDBs.
  4. Insert segments into the MSDBINIT data set by using the MSDB Maintenance Utility (DBFDBMA0).
  5. Issue the CREATE DB command for the MSDB database.

Note that the MSDB database cannot be used until it is loaded into online storage.

To load the MSDB database:

  1. Shut down IMS.
  2. Warm start IMS with MSDBLOAD keyword. For example, issue the command /NRE MSDBLOAD .