Oracle Solution for Error ora-21702

ORA-21702: object is not instantiated or has been de-instantiated in cache

What triggered the Error:

er attempted to perform an inappropriate operation to a transient object that is not instantiated in the object cache. Operations that cannot be applied to a not-instantiated transient object include deleting or pinning such an object.

What should we do to fix it:

er should check their code to see if they are performing such an operation without instantiating the object first, or performing such an operation after the allocation duration of the object has expired.