The statement means that MHonArc timed-out trying to obtain a lock on the archive. You may be able to avoid time-out problems by modifying the LOCKTRIES and LOCKDELAY resources.
Sometimes a lock file exists, but no MHonArc process is modifying the archive. This can occur if MHonArc is abnormally terminated. If you know that no other MHonArc process is editting the archive you are try to modify, then manually remove the lock file or use the FORCE resource. "