Use the LIBRARY DISABLE command to disable installation exit processing for a particular system.

The following syntax is of the command to disable the installation exit processing:

>>-+-LIBRARY-+--+-DISABLE-+--,--+-CBRUXENT-+-------------------><
   '-LI------'  '-DA------'     '-CBRUXVNL-'   

DISABLE | DA

Specifies a request to disable the installation exit.

CBRUXENT

Specifies a request to disable cartridge entry installation exit processing. Cartridge entry processing does not occur on this system while the exit is disabled.

Note: Disabling the cartridge entry installation exit on a system allows cartridge entry to be processed by another system, which is connected to the library and has the cartridge entry exit enabled. In effect, this directs cartridge entry processing to a particular system.

With APAR OA24966 (z/OS V1R8 and above), the cartridge entry installation exit can be disabled prior to the start of the OAM address space to ensure that when the OAM address space is started, entry processing is not attempted on the disabled system.

CBRUXVNL

Specifies a request to disable volume not in library installation exit processing.

Note: This does not disable job processing but does result in the volume not in library installation exit being bypassed or not called. In the absence of the CBRUXVNL installation exit's intervention, Job Step Setup processing attempts to allocate an applicable stand-alone tape drive for a volume that has been inadvertently ejected from a tape library. If there is no stand-alone drive capable of handling the tape volume request, the job or dynamic allocation fails. During Device Allocation or during Library Mount Processing, normal job processing for a volume not in the library with no CBRUXVNL installation exit intervention causes the failure of the job step or dynamic allocation.

The following message displays upon successful completion of the disable request:

 CBR1951I  Installation exit installation-exit-name has been disabled by operator command.

The installation exit processing on this system is disabled until a LIBRARY RESET command is issued or the system is IPLed. Restarting the OAM address space does not re-enable installation exit processing if it has been disabled by an operator command. You can use the DISPLAY SMS,OAM command to display the current status of the installation exits.