This form of asynchronous processing is, in CICS, a special case
of distributed transaction processing.
A CICS transaction acquires the use of a session to a remote system, and
uses the session for a single transmission (using a SEND command with the
LAST option) to initiate a remote transaction and send data to it. The reply
from the remote system causes a CICS transaction to be initiated just as if
it were a back-end transaction in normal DTP. This transaction, however, can
issue only a single RECEIVE command, and must then free the session.
Except for these additional restrictions, you can design your application
according to the rules given for distributed transaction processing later
in this section.
The general command sequence for asynchronous SEND and RECEIVE application
programs is shown in Figure 1. Figure 1. SEND and RECEIVE asynchronous processing – CICS front
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