Recovery functions and interfaces
This section describes the functions and interfaces provided by CICS® for recovery after a communication failure, or a CICS system failure.
Not all CICS releases provide the same level of support; this section describes MRO, IPIC, and ISC over SNA (APPC) parallel-session connections to other CICS Transaction Server for z/OS® systems. Much of it applies also to other types of connection, but with some restrictions. For information about the restrictions for connections to non-CICS Transaction Server for z/OS systems, and for LU6.1 and APPC single-session connections, see Connections that do not fully support shunting.
This section also assumes that each CICS system is restarted correctly (that is, that AUTO is coded on the START system initialization parameter). If an initial start is performed there are implications for connected systems; these are described in Initial and cold starts.