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SQL Anywhere 10.0.1 » SQL Anywhere Server - SQL Usage » Monitoring and Improving Performance » Application profiling » Index Consultant

Using the Index Consultant Next Page

Understanding Index Consultant recommendations

Before analyzing a tracing session, the Index Consultant asks you for the type of recommendations you want:

The analysis includes the following steps:

The Index Consultant provides a set of tabs with the results of a given analysis. The results of an analysis can be saved for later review.

Summary tab

The Summary tab provides an overview of the analysis, including such information as the number of queries, the number of recommended indexes, the number of pages required for the recommended indexes, and the benefit that the recommended indexes are expected to yield. The benefit number is measured in internal units of cost.

Recommended Indexes tab

The Recommended Indexes tab contains data about each of the recommended indexes. Among the information provided is the following:

Requests tab

The Requests tab provides a breakdown of the impact of the recommendations for individual requests within the tracing session. The information includes the estimated cost before and after applying the recommended indexes, as well as the virtual indexes used by the query. A button allows you to view the best execution plan found for the request.

Updates tab

The Updates tab provides a breakdown of the impact of the recommendations.

Unused Indexes tab

The Unused Indexes tab lists indexes that already exist in the database that were not used in the execution of any requests in the tracing session. Only secondary indexes are listed: that is, neither indexes on primary keys and foreign keys nor unique constraints are listed.

Log tab

The Log tab lists activities that have been completed for this analysis.