EXCPVR Option - Teradata Director Program

Teradata Director Program Reference

Product
Teradata Director Program
Release Number
16.10
Published
May 2017
Language
English (United States)
Last Update
2018-05-09
dita:mapPath
hwt1488824663348.ditamap
dita:ditavalPath
Audience_PDF_include.ditaval
dita:id
B035-2416
lifecycle
previous
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.