How to fix the Oracle error ORA-25106: only one of PARALLEL or NOPARALLEL clause may be specified?

In this post, you’ll learn more about the Oracle ErrorORA-25106: only one of PARALLEL or NOPARALLEL clause may be specified with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-25106: only one of PARALLEL or NOPARALLEL clause may be specified

Reason for the Error ORA-25106: only one of PARALLEL or NOPARALLEL clause may be specified

PARALLEL was specified more than once, NOPARALLEL was specified more than once, or both PARALLEL and NOPARALLEL were specified in an ALTER INDEX REBUILD statement.

How to fix the Error ORA-25106: only one of PARALLEL or NOPARALLEL clause may be specified ?

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

Remove all but one of the PARALLEL or NOPARALLEL clauses.