Fallback considerations


If you need to fall back from CM IMS TM to DELTA IMS, consider the following:

  • A cold-start of the IMS control region is required any time you go between the two products. Failing to cold-start results in an abend. However, any active element on the Log will be reapplied to the system.
  • Any DELTA Lists that are executed using one product will need to be executed again using the other product to ensure that the control region information is accurate. A conversion utility (see Converting-DELTA-IMS-objects-to-CM-IMS-TM-objects-in-batch-mode) is available for converting DELTA IMS DELTA Lists to CM IMS TM DELTA Lists. No utility exists to convert CM IMS TM DELTA Lists to DELTA IMS DELTA Lists. However, you can use the utilities provided with each product to convert the DELTA List to stage 1 macros and then convert the stage 1 macros into a DELTA List.

 

Tip: For faster searching, add an asterisk to the end of your partial query. Example: cert*