How do you find the slow log?

How do you find the slow log?

in you /etc/my. cnf file, look for the slow log to be a CSV storage engine based table located in, of all places, the mysql schema. This affects the general log as well, once you enable it.

How do you find a slow query in SQL?

3 Answers

1. Open SQL Server Profiler (in Performance Tools)
2. File -> New Trace…
3. Connect to your database.
4. Click the Events Selection tab.
5. Select only events which correspond to SQL queries finishing:
6. Click Column Filters…
7. Click Duration in the list.

What is the purpose of the slow query log?

5.4.5 The Slow Query Log. The slow query log consists of SQL statements that take more than long_query_time seconds to execute and require at least min_examined_row_limit rows to be examined. The slow query log can be used to find queries that take a long time to execute and are therefore candidates for optimization.

How to fix slow queries in Stack Exchange?

You can customize it to give you more or less info depending on the query you issue. In order not to save the same query many times, you may use the hash of the query as a unique key. Thanks for contributing an answer to Database Administrators Stack Exchange!

How to identify MySQL performance issues with slow queries?

Transaction Log – Lists out long-running transactions and deadlocks across database cluster where you can easily view what transactions are causing the deadlocks. The default query time threshold is 30 seconds. Tracing your MySQL Performance issue is not really difficult with MySQL.

How to set slow query log filename in MariaDB?

For example: Another way to configure the slow query log filename is to set the log-basename option, which configures MariaDB to use a common prefix for all log files (e.g. slow query log, general query log, error log, binary logs, etc.). The slow query log filename will be built by adding -slow.log to this prefix.