How to fix the Oracle error ORA-55494: input model set may only have a unique VPD policy?

In this post, you’ll learn more about the Oracle ErrorORA-55494: input model set may only have a unique VPD policy with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-55494: input model set may only have a unique VPD policy

Reason for the Error ORA-55494: input model set may only have a unique VPD policy

An attempt was made to execute a multi-model query where the models, as a set, did not have a unique Oracle Virtual Private Database (VPD) policy.

How to fix the Error ORA-55494: input model set may only have a unique VPD policy ?

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

Correct the input and try again.