Dynamic allocation for IMS databases

Use the dynamic allocation function to specify the JCL information for IMS databases in a library instead of in the JCL of each batch or online job.

If you use dynamic allocation, do not include JCL DD statements for any database data sets that have been defined for dynamic allocation. Check with the DBA or comparable specialist to determine which databases have been defined for dynamic allocation.

Related Reading: For additional information on the definitions for dynamic allocation, see the description of the DFSMDA macro in IMS Version 15.5 System Definition.