文档解释ORA-31048: Unsaved resources cannot be updatedCause: An attempt was made to update a resource that was never saved...

文档解释ORA-31029: Cannot bind to unsaved resourceCause: An attempt was made to bind to a resource that had not been saved...

文档解释ORA-31062: Cannot delete an unsaved resourceCause: An attempt was made to delete a resource that had not been saved...