Brokers that handle large numbers of retained subscriptions or publications
can use up all the IRLM storage that is allocated by default for
DB2 locks.
This might cause problems when you try to restart the broker.
The following
actions might help stop this happening.
Note: There might be a slight (approximately 1 to 2 percent) performance
degradation when you run with PC=YES. See DB2 Universal
Database for OS/390 and z/OS Version 7 Administration Guide, SC26-9931 for
more information.