16.20 - How APRC Works - Teradata Tools and Utilities

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

prodname
Teradata Tools and Utilities
vrm_release
16.20
created_date
September 2019
category
Programming Reference
featnum
B035-2417-108K

APRC restricts the number of Teradata Database restarts triggered by AP resets to only those occurrences where a restart is essential. The estimated net result of enabling APRC is the elimination of from 75 to 90 percent of restarts initiated by AP Resets. (Before APRC was implemented, a restart was automatically triggered whenever an active AP in the current configuration was reset.)

In the case of a resetting AP, there is a short delay while reconnects through other APs are performed, but the longer delay usually associated with a restart is not necessary.