INITIAL IOBUFS - 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

Purpose

Increase the number of I/O buffers for CPs not requiring the CCU operand on the START command. The command overrides the system defaults.

Syntax



where:

number
Number of I/O buffers.

Usage Notes

The buffers requested by this command are not used for NPs, or CPs that require the CCU operand on the START command. If only NPs exist, or all CPs are of this type, then any use of INITIAL IOBUFS wastes storage.

The INITIAL IOBUFS command overrides the system default and is the only way to increase the numbers of I/O buffers before TDP initialization. The system default is a function of the number of CPs and the workload. This default is appropriate for most situations.

The INITIAL IOBUFS command should be used if the D CELLS command shows an excessive number of GETMAINS or WAIT COUNTS on the I/O buffers. If this occurs, consult with Teradata customer support personnel to determine the optimum number of I/O buffers.

Example: INITIAL IOBUFS

INIT IOBUFS 32