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Utilizing Resources Effectively › Setting Priority in the Operating System and CA Datacom/DB › Library Changes

Library Changes

Recommended path for sites running CA Datacom CICS Services 14.0 with Version 12.0 MUF (or multiple Version 12.0 MUFs) upgrading to a MUF or multiple MUFs running CA Datacom/DB 14.0 code line. In all cases, cycle CICS to do the following library changes:

  1. Replace the Version 12.0 CABDLOAD in the DFHRPL to use the Version 14.0 CABDLOAD. Continue to use the library that has the Version 12.0 SID or in the case of multiple MUF, the Version 12.0 SIDs for those MUFs that have not been upgraded to Version 14.0. In a multiple MUF environment, you do not have to repeat this step because you upgraded at least one MUF from CA Datacom/DB 12.0 to CA Datacom/DB 14.0.
  2. Once you are satisfied that the CA Datacom CICS Services Version 14.0 and CABDLOAD in DFHRPL is working, then the upgrade of Version 12.0 MUF (or MUFs in the case of a multiple MUF environment) can begin.
  3. Upgrade each Version 12.0 MUF to Version 14.0 MUF. Part of this process generates a MUF-specific CUSLIB that has a DBSIDPR at the CA Datacom/DB 14.0 code line.
  4. After the upgrade for each Version 12.0 MUF is complete, replace the Version 12.0 CUSLIB in the DFHRPL with a CA Datacom/DB 14.0 CUSLIB for each MUF that you are upgrading.
  5. If you have to fall back from a CA Datacom/DB 14.0 MUF (or from any of the MUFs in a multiple MUF environment) to Version 12.0, replace the CA Datacom/DB Version 14.0 CUSLIB with the Version 12.0 CUSLIB for that MUF (or MUFs) and complete the fallback process for the MUF (or each MUF in a multiple MUF environment) for which you want to fall back from Version 14.0 to Version 12.0.
  6. Leave the CA Datacom/DB Version 14.0 CABDLOAD for the fall back process. Always leave the CA Datacom/DB Version 14.0 CABDLOAD in the DFHRPL if there are any CA Datacom/DB Version 14.0 MUFs in the multiple MUF environment of this CICS.
  7. If you decide to upgrade the Version 12.0 MUF (or any MUF in the case of a multiple MUF environment) back to CA Datacom/DB Version 14.0 MUF, perform the same action in item 4. However, replace the Version 12.0 CUSLIB with the CA Datacom/DB Version 14.0 CUSLIB for the MUF (or MUFs in a multiple MUF environment) you upgrade.