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How do I view a slow query log?
To enable the slow query log, type the following command at the mysql> prompt: SET GLOBAL slow_query_log = ‘ON’; There are additional options that you can set for the slow query log: By default, when the slow query log is enabled, it logs any query that takes longer than 10 seconds to run.
How do I find the slow query log path in mysql?
By default, the slow query log file is located at /var/lib/mysql/hostname-slow. log. We can also set up another location as shown in listing 03 using the slow_query_log_file parameter. We can also indicate to log queries not using indexes, as shown in the listing 04.
How do I view MariaDB logs?
Check the MariaDB log files
- For Bitnami installations following Approach A (using Linux system packages): installdir/mariadb/logs/mysqld. log.
- For Bitnami installations following Approach B (self-contained installations): installdir/mariadb/data/mysqld. log.
What does the slow query log in MySQL mean?
The MySQL slow query log is where the MySQL database server registers all queries that exceed a given threshold of execution time. This can often be a good starting place to see which queries are slowest and how often they are slow.
Which is the default name for the slow query log file?
If you specify no name for the slow query log file, the default name is host_name -slow.log . The server creates the file in the data directory unless an absolute path name is given to specify a different directory.
Is there a way to read the slow log?
To read the slow log the SLOWLOG GET command is used, that returns every entry in the slow log. It is possible to return only the N most recent entries passing an additional argument to the command (for instance SLOWLOG GET 10 ). The default requested length is 10 (when the argument is omitted).
How to write slow admin statements in MySQL?
If a log file already is open, it is closed and the new file is opened. The server writes less information to the slow query log if you use the –log-short-format option. To include slow administrative statements in the slow query log, enable the log_slow_admin_statements system variable.