Oracle : Ошибка ORA-21702

"object is not instantiated or has been de-instantiated in cache"
*Cause: User 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.
*Action: User 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.

Попробовать перевести

Поискать эту ошибку на форуме