TRACE= parameter for procedures

Use the TRACE= parameter in procedure to specify whether the IRLM is to turn on traces. Tracing is initialized at IRLM startup. Valid values are YES, and NO. The default is TRACE=NO.

NO
Turns off the high activity traces in IRLM. However, IRLM always keeps the low-activity subtraces on by default.
YES
Turns on all internal traces in IRLM.

z/OS® TRACE CT commands can be used to turn on or off individual IRLM traces, except the RQH, EXP, RLE, INT traces, which are always on.