DFS0904I SINGLE ADS AREA aaaaaaaa CLOSED DUE TO READ ERRORS. NO MISSING UPDATES.
Explanation
A single area in an area data set (ADS) encountered more than ten read errors. Because there is no update being made to this data set, no data is lost in the current ADS in the DASD.
System action
The area is stopped.
Programmer response
If the area is being shared among multiple IMS systems, check message DFS0904I on all IMS systems. If the DASD can be repaired without being restored, the ADS is usable as is.
If the DASD is to be restored, the data on the ADS might get outdated. Recover the area by using the last good image copy and log records.