Slow Query Logs

This section describes how to analyze slow query logs in a specified period. Slow Query Log displays a chart of SQL statements that are taking too long to execute and allows you to sort slow SQL statements by multiple dimensions, such as by user, host, or SQL template. It helps you quickly identify bottlenecks and improve instance performance.

Viewing Slow Query Logs

Log in to the DAS console.
Click in the upper left corner and select a region and project.
Click in the upper left corner, and under Databases, click Data Admin Service.
In the navigation pane, choose Intelligent O&M > Instance List.
In the upper right corner of the Instance List page, search for instances by engine type, instance name, or instance IP.
Locate the target instance and click Details.
Choose SQL > Slow Query Logs.
Select a time range and view trends, statistics, and details of the slow query logs generated within the time range.
- Log trends
  In the trends graph, you can hover your mouse at any point in time to view slow query logs.
- Log details
  View slow query log details in the lower part of the Slow Query Logs area. The details include the SQL statement, execution time, database name, client, user, execution duration, lock wait duration, and scanned and returned rows.
  
  Click Export to export slow query log details to a specific OBS bucket. After the details are exported, you can click Export History to view export records. You can also download the details to your local PC.
- Slow query log statistics
  Click Sample in the Operation column to view the sample of the SQL statement template.
  
  On the Statistics page, click Export to export slow query logs to a specific OBS bucket. Then you can click Export History to view export records. You can also download the exported slow query logs to your local PC.