An SQL statement query that takes more time than the specified value is referred to as a "slow query", and the corresponding statement is called a "slow query statement". The process where a database administrator (DBA) analyzes slow query statements and finds out the reasons why slow queries occur is known as "slow query analysis".
You can view the slow logs details, error logs details, and rollback logs of an instance, and download slow logs on the operation log page in the console. You can also view and download database logs through the command line interface (CLI) or TencentDB APIs. For more information, please see DescribeSlowLogs and DescribeBinlogs.
TencentDB for MySQL instances (excluding basic single-node instances) support operation log management.
long_query_timeparameter is adjusted, existing slow logs will not be affected. For example, if the slow log threshold parameter is 10 seconds, the slow log records exceeding 10 seconds are reported. After this value is modified to 1 second, the previously reported logs will still be kept.
|Slow log details||Records SQL statements that took more than 10 seconds to execute in the database for the past month|
|Slow log download||Downloads slow logs|
|Error log details||Records the detailed information of each startup and shutdown as well as all the serious warnings and errors during operation|
|Rollback logs||Records the status and progress of rollback tasks|
wgetto download the file over the high-speed private network.
- Logs with a size of 0 KB cannot be downloaded.
- You can also click Download to download it directly. However, this may take longer.
wgetcommand format: wget -c 'log file download address' -O custom filename.log
wget -c 'http://szx.dl.cdb.tencentyun.com:303/cfdee?appid=1210&time=1591&sign=aIGM%3D' -O test.log