Amending parameters in SYS1.PARMLIB(BPXPRMxx)

The default options, shipped in the BPXPRMxx members of SYS1.PARMLIB are not sufficient for use with the JVM supplied in CICS®. In particular, the values for IPCSEMNSEMS, MAXPROCSYS, MAXPROCUSER, MAXUIDS, MAXASSIZE, MAXFILEPROC, MAXPTYS, MAXTHREADS, MAXTHREADTASKS, and MAXCPUTIME are too low for CICS usage - increase them.

Recommendation:
Start by using the following values. Tailor them to your system's needs as you gain experience:
IPCSEMNSEMS
1000
MAXPROCSYS
500
MAXPROCUSER
512
MAXUIDS
500
MAXASSIZE
2000000000
MAXFILEPROC
512
MAXPTYS
256
MAXTHREADS
10000
MAXTHREADTASKS
5000
MAXCPUTIME
2147483647

For full details, see z/OS UNIX System Services Planning, GA22-7800, in section 14.8, "Customizing the BPXPRMxx parmlib members", and z/OS MVS™ Initialization and Tuning Reference, SA22-7592, in section 9.0, "BPXPRMxx (z/OS® UNIX System Services parameters)".

Related tasks
Verifying your Java components installation
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