RMAN_PIPE
涉及的dbms_pipe包中的过程和函数:
(1)PACK_MESSAGE Procedures
用途:Builds message in local buffer
(2)SEND_MESSAGE Function
用途:Sends message on named pipe: This implicitly creates a public pipe if the named pipe does not exist
(3)RECEIVE_MESSAGE Function
用途:Copies message from named pipe into local buffer
(4)UNPACK_MESSAGE Procedures
用途:Accesses next item in buffer