to the remote system. Also, when remote systems respond, TMA TCP gateway transforms these responses into replies that local client programs can process.
The TMA TCP for CICS software is implemented as an ordinary CICS program which communicates with the Sockets Interface. It accepts connection requests from the TMA TCP gateway and returns standard replies.
Simultaneous socket connections can exist between one TMA TCP for CICS gateway (a set of TMA Handlers within a single CICS region) and all remote TMA TCP gateway Requesters. Each socket connection is established automatically when a new TMA TCP gateway Requester in the Oracle Tuxedo domain establishes communication with the TMA TCP for CICS gateway.
Requests from within CICS
The mechanism used to send requests initiated from a CICS program to a remote Oracle Tuxedo domain is invisible to the user and significantly abstracted from the CICS programmer. Your company’s CICS program issues an EXEC CICS LINK command to the Oracle TMA gateway. In the data passed with the EXEC CICS LINK command, the programmer supplies the name of the service and the data to be used as input to that service. When the EXEC CICS LINK command returns, the reply to the request is placed in that same data area. If there was a problem satisfying the service request, meaningful return codes are sent back.
Oracle Tuxedo Mainframe Adapter for TCP CICS User Guide |
