How to fix the Oracle error ORA-64149: Invalid alter XMLIndex operation.?

In this post, you’ll learn more about the Oracle ErrorORA-64149: Invalid alter XMLIndex operation. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-64149: Invalid alter XMLIndex operation.

Reason for the Error ORA-64149: Invalid alter XMLIndex operation.

An attemp was made to alter an XMLIndex that is already being modified using NONBLOCKING ADD_GROUP or ADD_COLUMN. Only NONBLOCKING COMPLETE or ABORT alter index operations are allowed. Also, NONBLOCKING operation is not allowed with alter index rebuild.

How to fix the Error ORA-64149: Invalid alter XMLIndex operation. ?

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

Call DBMS_XMLINDEX.PROCESS_PENDING to finish pending work and then execute NONBLOCKING COMPLETE to successfully finish existing NONBLOCKING operation. Execute NONBLOCKING ABORT to cancle existing NONBLOCKING operation.