Controlling the IRLM in Mainframe

The IRLM monitors and manages the mechanism that DB2 uses to ensure databases integrity. This mechanism is known as locking. The IRLM, which DB2 connected to, is defined in the DB2 parameter member DSNZPARM in SYS1.PARMLIB.

The name identified in this member is the IRLM procedure name and is used as part of the OS/390 modify(F) command.

The following OS/390 commands are used to manage the IRLM.

F procname, ABEND, NODUMP.

Requests an abnormal termination of the IRLM, where procname is the name of the IRLM.

F procname, status

Displays the status of the IRLM.

START/STOP MRLMPROC

starts or stops th IRLM.