How to fix the Oracle error ORA-12812: only one PARALLEL or NOPARALLEL clause may be specified?

In this post, you’ll learn more about the Oracle ErrorORA-12812: only one 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-12812: only one PARALLEL or NOPARALLEL clause may be specified

Reason for the Error ORA-12812: only one 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 a CREATE TABLE, CLUSTER, or INDEX or in an ALTER TABLE or CLUSTER statement, or in a RECOVER command.

How to fix the Error ORA-12812: only one 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 and reissue the statement.

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