Are there any negative ramifications to increasing the MAXUSER facility control option?
At the startup of a multi user region, the MAXUSER XREF table is built to hold the userid and key.
- This table is 16 bytes times the MAXUSER value.
- There is one 16 byte entry for each user that signs on.
- The table is built in private storage above the line.
- After the user signs off, the entry in the table for that user is cleared and available to be re-used.
The impact of increasing MAXUSER is the next time the region is started, the XREF table will be larger by:
16 bytes * the difference between the old MAXUSER value and the new MAXUSER value
Please refer to the CA Top Secret Control Option Guide for more details about the MAXUSER control option.