16.20 - Tell and Logoff - Teradata Tools and Utilities

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

Teradata Tools and Utilities
September 2019
Programming Reference

After calling DBCHINI, set the delay options as follows.

Delay Option Setting
Wait-during-delay N
Tell-if-delay Y

Given this combination of options, a delay can be handled as follows:

  • The application calls DBCHCL for some function
  • The delay occurs before or after receiving information from DBCHCL
  • CLIv2 returns control to the application, with a return code of 286
  • The application takes action appropriate to the application

Before submitting a request, save a copy of the request in case it must be resubmitted. If a transaction spans several requests, save a copy of each request in the transaction in case the transaction must be resubmitted.

CLIv2 logs the session off when it encounters the delay. CLIv2 sends the logoff request to the Teradata Database when communication is re-established.