When creating a SQL tuning set, which of the following steps allows the DBA to reduce the size of the SQL set by selecting specific operators and values?
A. Filter versions
B. Filter loads
C. Filter tasks
D. Filter options
Option A,B,and C are not valid choices when creating a SQL tuning set.During the filter options step,the DBA can choose the SQL attributes,the operator,and the values to use as filter condition.
Creating a SQL Tuning Set: Filter Options
After the load method is selected, you can apply filters to reduce the scope of the SQL
statements found in the SQL tuning set. While using filters is optional, it can be very
beneficial due to the following:
Using filters directs the various advisors that use the SQL tuning set as a workload source,
such as SQL Tuning Advisor, SQL Access Advisor, and SQL Performance Analyzer, to
make recommendations based on a specific subset of SQL statements, which may lead to
better recommendations.
Using filters removes extraneous SQL statements from the SQL tuning set, which may
greatly reduce processing time when it is used as a workload source for the various
advisors.
Tip:
Before you can specify the filter options for the SQL tuning set, do the following:
Create a SQL tuning set and specify the initial options, as described in "Creating a SQL
Tuning Set: Options"
Select the load method, as described in "Creating a SQL Tuning Set: Load Method"
To specify filter options for a SQL tuning set:
On the Create SQL Tuning Set: Filter Options page, specify the values of filter conditions
that you want use in the search in the Value column, and an operator or a condition in
the Operator column.
Only the SQL statements that meet all of the specified filter conditions will be added to the
SQL tuning set. Unspecified filter values will not be included as filter conditions in the
search.
By default, the following filter conditions are displayed:
Parsing Schema Name
SQL Text
SQL ID
Elapsed Time (sec)
To add filter conditions, under Filter Conditions, select the filter condition you want to add
and click Add a Filter or Column.
After the desired filter conditions have been added, specify their values in
the Value column, and an operator or a condition in the Operator column.
To remove any unused filter conditions, click the icon in the Remove column for the
corresponding filter condition you want to remove.
Click Next.
The Create SQL Tuning Set: Schedule page appears.
Proceed to the next step, as described in "Creating a SQL Tuning Set: Schedule"