Specifying to DFSMShsm to use the PDA

In order for the PDA to trace DFSMShsm processing, it must not be disabled in the ARCCMDxx member referred to in the startup member. If you disable it at that time, no space is set aside for the circular file in storage, and the DASD data sets are not opened. The PDA is controlled by the following command:

SETSYS PDA

The default (if you do not specify the SETSYS command with the PDA parameter in the ARCCMDxx member) is PDA(ON).

If you do not want to use the PDA, add the following command to the ARCCMDxx member:

SETSYS PDA(NONE)

If you specify PDA(NONE), no space is set aside for the circular file in storage, and the DASD data sets are not opened.

After the PDA is started, you can turn it off and on during DFSMShsm operation. To turn the PDA off, issue the following command:

SETSYS PDA(OFF)

The PDA stops recording the diagnostic data, but the circular file space remains in storage, and the DASD data sets remain open.

To resume use of the PDA, issue the following command:

SETSYS PDA(ON)