DBMS_DEFER is the user interface to a replicated transactional deferred remote procedure call facility. Replicated applications use the calls in this interface to queue procedure calls for later transactional execution at remote nodes.
These procedures are typically called from either after row triggers or application specified update procedures.
For a complete description of this package within the context of Replication, see DBMS_DEFER in the Oracle Database Advanced Replication Management API Reference.