z/OS Tuning with I/O Mode Options - 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

System performance can be affected by the EXCPVR or IOSDRIVR options of the INITIAL IOMODE command. The INITIAL IOMODE command sets the input and output mode that TDP uses for channel communication with the database.

TDP performance can be constrained by the EXCP option since it limits I/O buffers to 24 bit storage, so fewer buffers are likely available for transferring data between TDP and the database.