INITIAL CCU (Deprecated by the CONFIG CP MAXBLKNM, MAXBLKSZ, and MAXCKSUM commands) - Teradata Director Program

Teradata® Director Program Reference

Product
Teradata Director Program
Release Number
17.00
Published
June 2020
Language
English (United States)
Last Update
2020-06-18
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B035-2416
lifecycle
previous
Product Category
Teradata Tools and Utilities

Purpose

Changes limits used during operation of CCU-type CPs.

Syntax



where:

MAXBLKNM
Maximum number of channel blocks for any I/O.
The value can be 1 through 255; the default is 4.
MAXBLKSZ
Maximum size of a channel block used for I/O.
The value can be 320 through 65535; the default is 65535.
MAXCKSUM
Number of checksum rejections at which the CP becomes unusable. A value of zero, the default, indicates that the CP will never be considered unusable due to checksum rejections.

Usage Notes

The operands of this deprecated command change the same values as the corresponding operands of the CONFIG CP command.

You can display CCU limits with the DISPLAY CONFIG CP DETAIL command.

INITIAL CCU is intended for use in consultation with Teradata Customer Service personnel.

These values are not necessarily the values that will be used by the CP. Rather, they are TDP's preferences but can be negotiated to other values by the database when communication for each CP is established. While the database cannot increase a value, it can decrease it. For MAXCKSUM, the value could be forced to zero, thereby allowing any number of checksum rejections.

Example: INITIAL CCU

INITIAL CCU MAXBLKNM 4
INITIAL CCU MAXBLKSZ 32767
INITIAL CCU MAXCKSUM 13