EXCPVR Option - Teradata Director Program

Teradata® Director Program Reference - 17.20

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
Lake
VMware
Product
Teradata Director Program
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2023-11-17
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Product Category
Teradata Tools and Utilities

Use the EXCPVR option instead of the default EXCP option to eliminate any address translation of channel programs by the z/OS I/O supervisor (IOS) each time the channel program supervisor call is invoked.

With EXCPVR, the data areas involved in the I/O operation and the area containing the channel program are page-fixed. Therefore, address translation for the Channel Control Words (CCWs) that make up the channel programs is done only once, during TDP initialization.