At given times, IMS(TM) builds a list of residual recovery entries (RREs). RREs are units of recovery about which WebSphere MQ might be in doubt. They arise in several situations:
/DISPLAY OASN SUBSYS sysid
To purge the RRE, issue one of the following IMS commands:
/CHANGE SUBSYS sysid RESET /CHANGE SUBSYS sysid RESET OASN nnnn
where nnnn is the originating application sequence number listed in response to your +CSQ1 DISPLAY command. This is the schedule number of the program instance, giving its place in the sequence of invocations of that program since the last IMS cold start. IMS cannot have two in-doubt units of recovery with the same schedule number.
These commands reset the status of IMS; they do not result in any communication with WebSphere MQ.
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