How to fix the Oracle error ORA-30771: Cannot add more than one referential constraint on REF column “string”?

In this post, you’ll learn more about the Oracle ErrorORA-30771: Cannot add more than one referential constraint on REF column “string” with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-30771: Cannot add more than one referential constraint on REF column “string”

Reason for the Error ORA-30771: Cannot add more than one referential constraint on REF column “string”

Multiple referential constraints were specified for a single REF column.

How to fix the Error ORA-30771: Cannot add more than one referential constraint on REF column “string” ?

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

Remove the additional referential constraints and retry the operation.