DSNS001I csect_name SUBSYSTEM HAS EXCEEDED THE USER SPECIFIED REAL STORAGE USAGE THRESHOLD

Explanation

You have requested to perform real storage monitoring by specifying a non-zero value for the REALSTORAGE_MAX subsystem parameter. Db2 has determined that the amount of real storage used has reached or exceeded the allowed amount of combined real and auxiliary storage.

System action

The Db2 subsystem requests to record a Db2 SYS1.LOGREC entry, and a reason code 00E20033 abend dump is requested before Db2 subsystem termination is initiated. The system terminates with: 
*DSNV086E = DB2 ABNORMAL TERMINATION 
 REASON=00E20033

System programmer response

Determine whether the value specified for the REALSTORAGE_MAX subsystem parameter is realistic. If you decide to contact IBM® Support, provide the Db2 SYS1.LOGREC entry and the reason code 00E20033 dump. Also, you will most likely be asked to provide IFCID225 records, which show historical storage usage, in order to determine what area is responsible for the real frame build up.