Summary of commands for APPC basic conversations

Table 34 shows the commands used in APPC basic conversations. For programming information about these commands, see the CICS® Application Programming Reference.

Table 34. Summary of commands used in basic conversations
Use to ... Sync levels Command Topic
Acquire a session to the partner system. 0,1,2 GDS ALLOCATE Allocating a session to the conversation
Initiate a conversation with a named process on the partner system. 0,1,2 GDS CONNECT PROCESS Connecting the partner transaction
Obtain the session and connection identifiers of the transaction’s principal facility. 0,1,2 GDS ASSIGN Back-end transaction initiation
Access session-related information in the attach header that initiated the transaction. 0,1,2 GDS EXTRACT PROCESS Back-end transaction initiation
Send data and control information to the conversation partner. 0,1,2 GDS SEND Sending data to the partner transaction
Receive data from the conversation partner. 0,1,2 GDS RECEIVE Receiving data from the partner transaction
Transmit any deferred data or control indicators. 0,1,2 GDS WAIT Sending data to the partner transaction
Reply positively to GDS SEND CONFIRM. 1,2 GDS ISSUE CONFIRMATION Receiving and replying to a confirmation request
Prepare a conversation partner for syncpointing. 2 GDS ISSUE PREPARE The ISSUE PREPARE command
Inform the conversation partner of a program-detected error. 0,1,2 GDS ISSUE ERROR Receiving and replying to a confirmation request
Signal an unusual condition to the conversation partner, usually against the flow of data. 0,1,2 GDS ISSUE SIGNAL Communicating errors across a conversation
Inform the conversation partner that the conversation should be abandoned. 0,1,2 GDS ISSUE ABEND Emergency termination of a conversation
Free the session. 0,1,2 GDS FREE Ending the conversation
Inform all a transaction’s conversation partners that it is ready to commit its recoverable resources. 2 SYNCPOINT Syncpointing a distributed process
Inform all a transaction’s conversation partners that it wants to back out changes to recoverable resources. 2 SYNCPOINT ROLLBACK The SYNCPOINT ROLLBACK command
[[ Contents Previous Page | Next Page Index ]]