Viewing Slow Query Logs

Scenarios

Slow query logs record statements that exceed the log_min_duration_statement value. You can view log details to identify statements that are slowly executed and optimize the statements.

RDS supports the following statement types:

SELECT
INSERT
UPDATE
DELETE
CREATE
DROP
ALTER
DO
CALL
COPY

Parameter Description

**Table 1** Parameters related to PostgreSQL slow queries
Parameter	Description
log_min_duration_statement	Specifies the minimum execution time. The statements whose execution time is greater than or equal to the value of this parameter are recorded.

Viewing Log Details

Log in to the management console.
Click in the upper left corner and select a region and a project.
Click Service List. Under Database, click Relational Database Service. The RDS console is displayed.
On the Instance Management page, click the target DB instance.
In the navigation pane on the left, choose Logs. On the Slow Query Logs page, view details about slow query logs.
- You can view the slow query log records of a specified execution statement type or a specific time period.
- The log_min_duration_statement parameter determines when a slow query log is recorded. However, changes to this parameter do not affect already recorded logs. If log_min_duration_statement is changed from 1s to 0.1s, none of the previously recorded logs that do not meet the new threshold are deleted. For example, a 1.5s SQL statement that was recorded when the threshold was 1s will not be deleted now that the new threshold is 2s.