In this post, you’ll learn more about the Oracle ErrorDRG-13901: Index must have stage_itab with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
DRG-13901: Index must have stage_itab
Reason for the Error DRG-13901: Index must have stage_itab
Cause: Auto_Optimize works on indexes with stage_itab
How to fix the Error DRG-13901: Index must have stage_itab ?
You can fix this error in Oracle by following the below steps
Action: Use an index with stage_itab for auto_optimize