![[z/OS]](./ngzos.gif)
Refreshing ESM classes (z/OS only)
IBM® MQ for z/OS® does not perform any authority checks itself; instead, it routes requests for authority checks to an external security manager (ESM).
About this task
The IBM MQ product documentation assumes that you are using the z/OS Security Server Resource Access Control Facility (RACF®) as the ESM.
So that IBM MQ does not have to contact RACF for every authority check, IBM MQ puts information about the user and the user's authorities
in a cache. When you add, delete, or change a RACF
resource profile that is held in one of the following classes:
- MQADMIN
- MQNLIST
- MQPROC
- MQQUEUE
- MXADMIN
- MXNLIST
- MXPROC
- MXQUEUE
- MXTOPIC
For more information about MQSC commands, see Administration using MQSC commands in IBM Knowledge Center.
To refresh z/OS classes:
Procedure
- In the Navigator view, right-click the queue manager for which you want to refresh the classes, then, to refresh all of the classes, click ALL, click the type of class that you want to refresh: . Alternatively, instead of clicking
- When prompted, click Yes.
Results
The classes that you selected are refreshed: the profiles are deleted from the in-storage table and must be retrieved directly from RACF next time they are needed.