17.00 - File System: Data Segment Lock Requests Columns - Teradata Database

Teradata Vantageā„¢ - Resource Usage Macros and Tables

prodname
Advanced SQL Engine
Teradata Database
vrm_release
17.00
created_date
June 2020
category
Administration
User Guide
featnum
B035-1099-170K

These columns identify the number of lock requests, blocks, and deadlocks on a disk segment, including those implied for segment acquires.

The locks referred to here are short term file system locks and are distinct from transaction locks, which are counted in the fields documented in General Concurrency Control Database Locks Columns.
Column Name Mode Description Data Type
FileLockBlocks count Number of lock requests that were blocked. This column is calculated as follows:

Total locks - Locks blocked = Locks with immediate grants

FLOAT
FileLockDeadlocks count Number of deadlocks detected on lock requests. FLOAT
FileLockEnters count Number of lock requests on disk segments. FLOAT