March 2007
Intermediate to advanced
488 pages
13h 46m
English
book
OnDemand SQL Performance Analysis Simplified on DB2 for i5/OS in V5R4
by Hernando Bedoya, Jaime Gaug, James Kerl, Ser Ser NG, Jose Cardoso dos Santos
Content preview from OnDemand SQL Performance Analysis Simplified on DB2 for i5/OS in V5R4
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190 OnDemand SQL Performance Analysis Simplified on DB2 for i5/OS in V5R4
The following columns are the most commonly used:
QQI1: CPU time to return all rows, in milliseconds
QQI2: Clock time to return all rows, in milliseconds
QQI3: Number of synchronous database reads
QQI4: Number of synchronous database writes
QQI5: Number of asynchronous database reads
QQI6: Number of asynchronous database writes
QQI7: Number of rows returned
QQI8: Number of calls to retrieve rows returned
6.1.16 The 3020 record: index advised (SQE)
The query optimizer analyzes the row selection in the query and determines, based on
default values, if creation ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.