15.10 - CLIv2 Application Requirements for 2PC - Call-Level Interface Version 2

Teradata Call-Level Interface Version 2 Reference for Mainframe-Attached Systems

Call-Level Interface Version 2
Programming Reference

The following requirements apply to CLIv2 applications that use the 2PC protocol:

  • The application must establish a 2PC session, initiate requests, and use the coordinator‘s sync point facilities to commit the updates rather than issue direct commands to the participant.
  • Any connection used for 2PC requests must be specified as a 2PC connection.
  • For example, you can use the CON function’s 2PC option in the DBCAREA or set the 2PC default in the HSHSPB.

  • An END TRANSACTION statement must have a corresponding BEGIN TRANSACTION preceding it. For applications in 2PC mode, both of these commands can be used only in inner nested transactions.
  • The application must use CICS/VS or IMS/VS syncpoint processing to commit or abort the transaction (not END TRANSACTION, ROLLBACK WORK, COMMIT WORK, or ABORT).