How to fix the Oracle error ORA-01956: invalid command when OS_ROLES are being used?

In this post, you’ll learn more about the Oracle ErrorORA-01956: invalid command when OS_ROLES are being used with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-01956: invalid command when OS_ROLES are being used

Reason for the Error ORA-01956: invalid command when OS_ROLES are being used

This command cannot be used when the INIT.ORA parameter OS_ROLES is TRUE.

How to fix the Error ORA-01956: invalid command when OS_ROLES are being used ?

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

Grant the role to the user in the operating system.