Fallback step 2: Reactivate Db2 11 code: DSNTIJFV

After you stop your Db2 12 activity, continue the fallback process by using job DSNTIJFV to reactivate the code of your previous Db2 version.

About this task

Job DSNTIJFV renames procedures to activate Db2 11 and deactivate Db2 12.

Procedure

To reactivate the code of your previous Db2 version:

  1. (Optional) Tailor job DSNTIJFV.

    SYS1.PROCLIB is the default target for JCL procedures. Add statements to rename other procedures, such as your IMS, CICS®, TSO logon procedures, and batch procedures.

    You might want two sets of procedures, such as DSN1xxxx and DSN2xxxx, at all times, with an alias for the current release level.

  2. Run job DSNTIJFV.
  3. Ensure that job DSNTIJFV completed successfully.
    • If DSNTIJFV runs successfully, it produces a return code of 0. Check that all renames executed successfully.
    • If DSNTIJFV fails or abends, rerun only the renames that failed. If some of the procedures already exist, check carefully to ensure that procedures for the two releases are not mixed.