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SQL Optimizer for SAP ASE 3.8 - Release Notes

Chart Tab

Charts are available for all the statistics and run times. The Charts tab of the Run Time pane in the Index Advisor window displays two chart panes showing the run time information and statistics.

To change the information in the chart

Click the Chart Title and select one of the following functions:

Function Description
Performance Projection A performance forecast based on the retrieved Estimated I/O Cost value. If the Performance Projection value is greater then 1, then it is forecasted that the recommended Index candidate may give a better performance.

Estimated I/O cost

 

Charts the estimated I/0 cost from the SQL statement with the corresponding indexes.

All Records

and

First Record

 

Elapsed Time

Charts the execution time (in clock time) that it takes the SQL statement to select all records or the first record.

Times of Improvement

How many times faster the alternative SQL statement is compared to the original SQL statement.

CPU Time

Charts the execution time (in CPU time) that it takes the SQL statement to select all records or the first record.

Actual I/O Cost

Charts the Actual I/O Cost of executing the SQL statement from Adaptive Server

Elapsed Time + CPU Time

Charts side by side the Elapsed Time and the CPU Time.

Writes

Charts the accumulative number of disk writes for the SQL statement from the run time statistics.

Scan Count

Charts the accumulative number of scans for the SQL statement from the run time statistics

Logical Reads

Charts the accumulative number of logical reads for the SQL statement from the run time statistics

Physical Reads

Charts the accumulative number of physical reads for the SQL statement from the run time statistics.

APF IOs used

Charts the accumulative number of APF IOs (Asynchronous-PreFetch I/Os) for the SQL statement from the run time statistics.

Other

All Records

Charts the Elapsed Time + CPU Time, Actual I/O Cost, and Times of Improvement for all records.

First Record

Charts the Elapsed Time + CPU Time, Actual I/O Cost, and Times of Improvement for the first record.

All Records vs. First Record

Charts the Elapsed Time for all records and the first record.

All Records vs. First Record with Cost

Charts the Estimated I/O Cost, the Elapsed Time + CPU Time (for all records), and Elapsed Time + CPU Time (for the first record).

Print

 

Prints the chart.

Save

 

Saves the selected chart.

Hide Chart

 

Hides the selected chart.

 

Related Topics

Index Advisor Overview

Index Advisor Window

Related Documents

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