Notes on using permanent connection

You cannot establish permanent connection from within a transaction. After establishing permanent connection, generate a transaction. When you specify a DCCM3 logical terminal as the destination of a request to establish permanent connection, you cannot generate transactions from a CUP.
When the facility for establishing permanent connection is used, if a communication error or timeout occurs on the client, the permanent connection will be released.
If any timer used for monitoring on the server side expires during establishment of a permanent connection, the server may fail. If the server fails, a function issued by a CUP may be placed in a wait state until a timeout occurs (until the maximum time to wait for a response expires). This phenomenon occurs because the server cannot recognize the packets sent from the client. To prevent this phenomenon from occurring, set appropriate values in all the timers.