Defining RRS to automatic restart management (ARM)

If RRS fails, it can use automatic restart management (ARM) to restart itself in a different address space on the same system. RRS, however, will not restart itself following a SETRRS CANCEL command. To stop RRS and cause it to restart automatically, use the FORCE command with ARM and ARMRESTART.

To make automatic restart possible, your installation must:

Provide an ARM couple data set that contains, either explicitly or through defaults, an automatic restart management policy for RRS. When setting up your ARM policy, use the element name SYS_RRS_sysname for RRS.
Activate the ARM couple data set through a COUPLExx parmlib member or a SETXCF operator command. The data set must be available when RRS starts and when it restarts.
Make sure that no element-restart denies the restart of an RRS element or changes its restart. An exception is an exit routine that vetoes RRS restart but then itself starts the RRS address space. This technique, however, might delay other elements in the restart group that have to wait for RRS services to become available.

As with other automatic restart management elements, an ENF signal for event 38 occurs when RRS registers with automatic restart management or is automatically restarted.

For information about automatic restart management parameters, see z/OS MVS Setting Up a Sysplex.