Checking for Slow SQL Statements

Scenarios

Database audit provides a preconfigured rule to check for slow SQL statements, whose response time recorded in audit logs is greater than 1 second.

You can learn the execution duration, number of affected rows, and database information of the slow SQL statements, and optimize the statements accordingly.

Checking Slow SQL Statements

After slow SQL detection is enabled, you can choose Dashboard > Statements to view the statements that are executed slowly and the statement details.

1. Log in to the management console.
2. Select a region, click , and choose Security & Compliance > Database Security Service. The Dashboard page is displayed.
3. In the navigation pane, choose Dashboard.
4. In the Instance drop-down list, select the instance whose slow SQL statement information you want to view.
5. Click the Statements tab.
6. Set filter criteria to query SQL statements.
   • You can select All, 30 minutes, 1 hour, 24 hours, 7 days, 30 days, or a custom time range from the drop-down list in the upper left corner of the list. Click Custom, select the start time and end time, and click OK. The SQL statements in the time range are displayed in the list.
   • You can select an attribute from the search box in the upper right corner of the list or enter a keyword to search. Set Risk Severity (the default value in the slow SQL rule is Low) and click Submit.
   • 

     A maximum of 10,000 records can be retrieved in a query.

7. Click the slow SQL statement to be viewed.
8. In the Details dialog box, view the detailed information about the SQL statement. Table 1 describes the parameters.

   Table 1 SQL statement parameters

   Parameter	Description
   Session ID	ID of an SQL statement, which is automatically generated
   Database Instance	Database where an SQL statement is executed
   Database Type	Type of the database where an SQL statement is executed
   Database User	Database user for executing an SQL statement
   Client MAC Address	MAC address of the client where an SQL statement is executed
   Database MAC Address	MAC address of the database where an SQL statement is executed
   Client IP Address	IP address of the client where an SQL statement is executed
   Database IP Address/Domain Name	IP address of the database where an SQL statement is executed
   Client Port	Port of the client where an SQL statement is executed
   Database Port	Port of the database where the SQL statement is executed
   Client Name	Name of the client where an SQL statement is executed
   Operation Type	Type of an SQL statement operation
   Operation Object Type	Type of an SQL statement operation object
   Response Result	Response to an SQL statement
   Affected Rows	Number of rows affected by executing an SQL statement
   Start	Time when an SQL statement starts to be executed
   End	Time when the SQL statement execution ends
   SQL Statement	Name of an SQL statement
   Request Result	Result of requesting for executing an SQL statement

Managing Slow SQL Detection Settings

Choose Rules and click the Risky Operations tab.Here you can manage slow SQL settings.

• Enable

  In the row containing the slow SQL detection rule, click Enable in the Operation column.

• Edit

  In the row containing the slow SQL detection rule, click Edit in the Operation column.

• Disable

  In the row containing the slow SQL detection rule, click Disable in the Operation column. Disabled rules will not be audited.

• Delete

  In the row containing the slow SQL detection rule, click Delete in the Operation column. To add the rule again,

  For details, see Adding Risky Operations.