Use of the RACF data space

When the RACF® (or an equivalent product) data space is supported (RACF 2.1 or later), IMS loads the RACF profiles for the IMS commands and transactions into that data space instead of the IMS control region.

Use of the RACF data space invalidates the IMS online change support for RACF with the /MODIFY command. The IMS online change support is still valid, though, when the RACF data space is not being used.

The message DFS3432 RACF PARAMETER INVALID IF RACF DATA SPACE USED is issued if the RACF parameter is used on the /MODIFY PREPARE command when the RACF data space is being used. You can use the RACF command SETROPTS RACLIST (classname) REFRESH to refresh the RACF resource profiles in the RACF data space without requiring the IMS applications to suspend work.