How to fix the Oracle error ORA-22893: constraint can be specified only for REF columns?

In this post, you’ll learn more about the Oracle ErrorORA-22893: constraint can be specified only for REF columns with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-22893: constraint can be specified only for REF columns

Reason for the Error ORA-22893: constraint can be specified only for REF columns

The constraint specified does not apply to non-REF columns.

How to fix the Error ORA-22893: constraint can be specified only for REF columns ?

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

Remove the constraint and retry the operation.