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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Chapter 6. Custom Database Monitor Analysis 189
QQC16: This column contains a Y when SQE is used to process the SQL statement
(CQE = N).
QVC43: Column will contain the reason why SQE was not used
6.1.13 The 3015 record: SQE statistics advised
The 3015 record is generated by SQE when it determines that a column statistic needs to be
collected or refreshed.
The following columns are commonly used:
QVQTBL: Table name
QVQLIB: Table library name
QQC11: Statistics request type
N No statistic existed for the column
S Column statistic was stale
QQ1000: Name of the column identified in Statistic Advice
6.1.14 The 3018 record: STRDBMON/ENDDBMON
The 3018 ...
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