Enabling dynamic tracing of LDAP client library code

To enable this behavior, you must set an environment variable AMQ_LDAP_TRACE to a non-null value.

When the AMQ_LDAP_TRACE is set to a non-null value, and the LDAP functionality is used, some queue manager processes create zero length files under /var/mqm/trace. When the trace is then switched on using the strmqtrc command, some trace information is written to these files. Later, when trace is switched off with the endmqtrc command, trace information ceases to be written to the files, but handles to the files remain open until the queue manager ends.

On UNIX platforms, filesystem space cannot be released completely simply by unlinking these files with the rm command. This is a side-effect from the fact that the handles remain open. Therefore, a queue manager end should be performed, whenever disk space in /var/mqm/trace needs to be released.