How to fix the Oracle error ORA-08111: a partitioned index may not be coalesced as a whole?

In this post, you’ll learn more about the Oracle ErrorORA-08111: a partitioned index may not be coalesced as a whole with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-08111: a partitioned index may not be coalesced as a whole

Reason for the Error ORA-08111: a partitioned index may not be coalesced as a whole

User attempted to coalesce a partitioned index using ALTER INDEX COALESCE statement, which is illegal

How to fix the Error ORA-08111: a partitioned index may not be coalesced as a whole ?

You can fix this error in Oracle by following the below steps

Coalesce the index a (sub)partition at a time (using ALTER INDEX MODIFY (sub)PARTITION COALESCE)