Managing CA VM:Secure › Enlarging the CP Object Directory (Keeping It on the Same DASD Volume) › Step 1: Calculate the Number of Pages That CA VM:Secure Needs to Initialize the Directory

Step 1: Calculate the Number of Pages That CA VM:Secure Needs to Initialize the Directory

IBM CP planning guides give space requirements for the CP object directory area. For more information about your space requirement, see the appropriate IBM planning and administration documentation, and then use the following information in the IBM formulas for calculating the total control block space (tcbs).

Note: Some versions of CP call the TCBS number of records NR, the number of USERs NU, and the number of DEVs ND.

1. Change MAX (1, USERs /8) to MAX (1, USERs /10).
2. Treat each directory profile on the system as a user ID: add 1 to USERs for each profile and add 1 to DEVs for each device in the profile (this is in addition to the tallying that the IBM formula does for directory profiles).
3. Treat users on hold as active users.
4. Change (TOTDSGRGIDs X 4) to (TOTDSGRGIDs X 8).

The TCBS calculation with these numbers gives the approximate number of pages that CA VM:Secure needs to initialize the online directory. It is only approximate because CA VM:Secure interactively updates the online directory. Therefore, we recommend that you add about 25 percent to the TCBS that you calculated above for work space.

After you change the directory allocation size, you can determine how close your estimate was by tracking the number of times you see message 065I on the CA VM:Secure console while CA VM:Secure is running. While this message is generated at CA VM:Secure startup to tell you the number of online directory pages currently in use, it is also generated when CA VM:Secure runs out of work space and then reclaims it. The reclaiming of work space is called dynamic rebuild.

If you see many occurrences of this message during the day, consider increasing the size of the online directory allocation.