In this post, you’ll learn more about the Oracle ErrorCRS-02721: ‘string’ is a resource alias for ‘string’ and cannot be unregistered with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
CRS-02721: ‘string’ is a resource alias for ‘string’ and cannot be unregistered
Reason for the Error CRS-02721: ‘string’ is a resource alias for ‘string’ and cannot be unregistered
Cause: An attempt was made to unregister a resource alias as if it were a resource.
How to fix the Error CRS-02721: ‘string’ is a resource alias for ‘string’ and cannot be unregistered ?
You can fix this error in Oracle by following the below steps
Action: Either unregister the resource which this alias refers to or modify its ALIAS_NAME attribute to not have a resource alias.