Step 27. Prepare Control-M

1. Prepare New Day procedure

   To prevent the New Day procedure from running twice on the same day (once on the old Control‑M version and again on Control‑M current release), do one of the following:

   • After the New Day Procedure ends, copy the Active Jobs file and the History Jobs file from the previous version to the current release. The method for performing this procedure is described in items A and B of Step 44. Migrate Control-M. For example, if the New Day procedure runs at 11:00 A.M. for about 3 minutes, copy the Active Jobs file at 11:15 when you are sure that the New Day procedure has ended.
   • Migrate to the current release well before the New Day procedure is scheduled to run so that you complete the migration before the New Day procedure begins.
2. Modify data set parameters

   If you want to increase or decrease the size of data sets, or change your mirroring option, modify the new Control‑M data set parameters. Changes to these parameters affect the allocation and formatting of Control‑M data sets.

   You can change values by using the "Customize Control-M Dataset Parameters" major step, under Product Customization for Control-M, when in Customization in ICE. This step lets you

   • specify new parameter values for Control‑M repository
   • save the parameters in the CTMPARM and DEFPARM members—mandatory if values were changed
   • rebuild formatting jobs reflecting the new values

   For each data set whose size you changed, delete or rename the older version of the data set outside of ICE before running the formatting job.

3. Modify installation parameters

   Verify that the values assigned to the following installation parameters in the current release system are suitable for production. You can change values by using the "CTMPARM Post‑Installation" major step, under Product Customization for Control-M, in ICE Customization.

   Table 15 Control‑M installation parameters

   Parameter	Additional considerations
   PROCNAMM	Set this parameter to the New Day procedure name.
   DAYTIMEM

4. Save parameters

   Save parameters by performing the "Save Parameters into Product Libraries" minor step.

5. Modify CMEM parameters

   You can increase or decrease the size of the CMEM communication data sets by modifying the new CMEM data set parameters in IOACPRM. Changes to these parameters affect the allocation and formatting of the communication files. Change the values of the parameters using the "Install Event Manager (CMEM)" major step, under Product Customization for Control-M, in ICE Customization.