Reallocating the current extent

1. Shut down Control‑M/Tape using the operator command S CTTINIT,PARM='MODE=TERM'.
2. Unload the Media Database data component using the IOADUL utility. The output of this utility is loaded to the new and larger Media Database.
3. Rename the production Media DATA and INDEX components. For example, rename the CTT.V900.MDBD.E000 file to CTT.V900.MDBD.E000.OLD. This file is kept as a backup for the Media Database.
4. Using ICE, select Customization. Enter CTT in the Product field, and select Product Customization.
5. Select major step 2, "Customize Control-M/Tape Datasets," and then minor step 1, "Media Database Space Calculation."
6. Calculate the space needed for your Media Database, and update the definitions on the screen. To calculate the amount of space needed, see the Control‑M/Tape installation chapter of the INCONTROL for z/OS Installation Guide: Installing.

   Note: The Media Database can be enlarged by increasing the number of blocks, by enlarging the block size, or both.

7. Select minor step 4, "Save parameters into Product Libraries."
8. Select minor step 5, "Create and Init Media Database," and submit the job. This job allocates and formats a new Control‑M/Tape Media file.
9. Reload the Media Database data component into the new and larger data component, using the IOADLD utility.
10. Run the CTTBIX utility.
11. Restart Control‑M/Tape using the operator command S CTTINIT,PARM='MODE=INIT'.