SET STORAGE (Deprecated by the CONFIG CP STORAGE command) - 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
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B035-2416
lifecycle
previous
Product Category
Teradata Tools and Utilities

Purpose

Changes the virtual storage limits used by TDP.

Syntax



The SE abbreviation is deprecated.

where:

nnnn
Maximum number of bytes of virtual storage that will be used for CCU-type CP I/O

Usage Notes

The operand of this deprecated command changes the same value as the CONFIG CP STORAGE command.

The current value can be displayed using the DISPLAY CONFIG CP DETAIL command.

If the SET STORAGE command is not used, TDP dynamically calculates the value, based on the INITIAL CCU MAXBLKNM value and the number of started CPs. The minimum value, which is determined by TDP, varies according to the number and types of CPs started, and the values of INITIAL MAXBLKNM and MAXBLKSIZE. The maximum value that can be specified is 4294967295, although this amount of storage might not be allocated. When using INITIAL IOMODE EXCPVR or IOSDRIVR on z/OS, 31bit storage is used so the dynamic calculations allow for more storage. For z/OS, use of INITIAL IOMODE EXCPVR or IOSDRIVR results in CP virtual storage being fixed in real storage while it is allocated, so allowing more storage can increase real storage utilization.

SET STORAGE overrides subsequent dynamic changes by TDP, and can prevent additional CPs from being started. If the specified value is higher than the current maximum, any CP waiting for buffers will immediately try again to obtain them.

Once SET STORAGE is invoked, there is no way to revert to dynamic calculation by TDP without restarting TDP.

The current values can be displayed with the DISPLAY STORAGE command.

SET STORAGE is intended for use in consultation with Teradata Customer Support personnel.

Example: SET STORAGE

SET STORAGE CP 2000000