STGDEBUG(X)

IBM® Software Support might instruct you to add the set storage debugging parameter to the RKANPAR member KDFSYSIN as part of the debugging process.

Request:

You notice signs of a storage overlay or storage creep and contact IBM Software Support. Your IBM contact person might request that you set storage debugging to X, which is the setting that generates the highest level of detail. (The other possible settings are N, no debugging, and Y, minimal debugging.)

Response:

Depending on the state that IBM Software Support asks you to set, you might also need to modify the MINIMUM parameter in the same member. STGDEBUG(Y) adds a small amount (32 bytes) to each block of storage allocated from our internal storage manager. Normally, this does not cause problems because most systems have sufficient extra space in their engine storage allocation to allow for this. STGDEBUG(X) however, adds a total of 96 bytes to each allocated block of storage, which can quickly exceed your storage allocation. In most cases, double the value specified in the MINIMUM parameter whenever you specify STGDEBUG(X). Also, ensure that you run this type of debugging with the region set to 0M (REGION=0M).