IBM Books

Direct Write Time


Snapshot Information Level
Database
Table Space
 
Application

API Structure(s)
sqlm_dbase
sqlm_tablespace
sqlm_bp_info
sqlm_appl

Monitor Group
Buffer Pool
Buffer Pool
Buffer Pool
Buffer Pool

Resettable

Yes

 

Event Information Level
Database
Connection
Table Space

API Structure(s)
sqlm_db_event
sqlm_conn_event
sqlm_tablespace_event

 

API Element Name
Element Type

direct_write_time
counter

 

Description:  The elapsed time (in milliseconds) required to perform the direct writes.

Usage:  Use the following formula to calculate the average direct write time per sector:

 direct write time / direct writes to database

A high average time may indicate an I/O conflict.

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