DFS3753I COMPARE NOT PERFORMED BECAUSE I/O ERROR OR LONG BUSY OCCURRED FOR AREA=areaname DD=ddname RBA=nnnnnnnn

Explanation

The DEDB AREA Data Set Compare utility tried to read a control interval (CI) from all of the requested ADSs to compare each CI. The Compare utility excluded the indicated control interval from the compare operation, because an I/O error occurred on the CI in the ADS of the ddname.