Index Advisor
View Index Advisor page
Default prefix of index name: (Default: QUEST_SX_IDX)
Enter the prefix that is placed on the index name when the Index Advisor automatically generates index candidates.
Calculate selectivity of indexes using a default sampling size of:
The selectivity is calculated from the number of rows that are selected from the table. The number of rows selected is determined by the following settings:
Top percentage of rows from table (Default = 10)
This number is used as a percentage to calculate the number of rows in the table that are retrieved in the sample which determines the selectivity of the data. You see the number of row used in the sample in the Select tables window.
Minimum number of rows (Default = 1000)
This is the minimum number of rows that are used in the sample which determines the selectivity of the data. This number is used if the calculation using the percentage of the table is below this value.
Maximum number of rows (Default = 10000)
This is the maximum number of rows that are used in the sample which determines the selectivity of the data. This number is used if the calculation using the percentage of the table is above this value.
Do not advise indexes for tables with row count less than (Default = 500)
Specify the number of rows that a table must have before index candidates are generated for any columns in that table.
Evaluate columns in SELECT list (Default = cleared)
For SELECT SQL statements, specify whether the columns in the SELECT list are considered when generating the alternative indexes.
Maximum number of columns in a composite index (Default = 4)
Specify the maximum number of columns that are placed in a composite index.
Maximum number of indexes to advise per table usage (Default = 3)
Specific the maximum number of indexes that the Index Advisor creates for each table in the SQL statement.
Directory Setup Tab
Directory Setup
The Directory Setup tab of the Preferences window allows you to define the directory for saving and opening files used in the different modules.
Set up directories for the Activity Log, the SQL History, the SQL Scanner, the SQL Collector for Monitor Server, and SQL Inspector modules. Also, set-up the directory for opening and saving files in several modules.
Set up the directories for all the Analyzer modules and SQL Repository.
Directory (1)
Default directory for open and save dialog
This directory is the default for opening and saving files with the Open or Save commands from various locations through the modules. By default, it is C:\Documents and Settings\User\Application Data\Quest Software\SQL Optimizer.
Activity Log Directory
This directory specifies the location where the Activity Log file is created. By default, it is C:\Documents and Settings\User\Application Data\Quest Software\SQL Optimizer.
SQL History directory
This directory is used to store the data file that stores the SQL history information. The default is C:\Documents and Settings\User\Application Data\Quest Software\Quest SQL Optimizer\SQL_History.
SQL Scanner data directory
This directory is used to store the data files created while scanning. The default is the sub-directory DATA of the installed directory, for example: C:\Documents and Settings\User\Application Data\Quest Software\Quest SQL Optimizer\DATA. Changes to this directory cannot be made while SQL Scanner is active.
SQL Collector data directory
This directory is used to store the data files created while monitoring. The default is the sub-directory DATA of the installed directory, for example: C:\Documents and Settings\User\Application Data\Quest Software\Quest SQL Optimizer\DATA. Changes to this directory cannot be made while SQL Collector for Monitor Server is active.
SQL Inspector data directory
This directory is used to store the data files created while capturing SQL from the system tables. The default is the sub-directory DATA of the installed directory, for example: C:\Documents and Settings\User\Application Data\Quest Software\SQL Optimizer\DATA. Changes to this directory cannot be made while SQL Inspector is active.
Note: It is advisable not to change the data directory after selection, as files already created are kept in the original directory and are not moved to the new directory.