16.10 - WDBD - Teradata Database

Teradata Database Support Utilities

prodname
Teradata Database
vrm_release
16.10
created_date
June 2017
category
Configuration
featnum
B035-1180-161K

Purpose

The WDBD (WAL Data Block Descriptors) command shows a formatted display of the WDBDs in the current WCI.

Syntax

The online help lists the display options (/S, /X, /H) as /dispopt.


/S
Displays the WDBDs in a short format. This is the default.
/X
Displays the WDBDs in an extended format.
/H
Displays all of the WDBDs, followed by a display of the WDBDs in hexadecimal.
WLSN = WlsnNum
Specifies a WAL log sequence number for which WDBDs will be displayed.
WlsnNum is an 64-bit value, the format of which is determined by the radix setting. For more information, see RADIX.
SECTOR = sectornum
Specifies a sector number for which WDBDs will be displayed.
sectornum is a hexadecimal or decimal value, subject to the radix setting. For more information, see RADIX.

Usage Notes

WDBDs are used to determine which WDBs exists and where they are located on a cylinder.

The WDBD command must be invoked from a WCI or WCI:WDBD context. The resulting context is the selected range of WDBDs within the WCI.