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Error log:By default, the error log probably records the following areas of information:1. Information during server startup and shutdown (not necessarily error messages, for example, how MySQL launches InnoDB tablespace files, how to initialize its
ObjectiveThe log of the database is a strong basis for helping the database administrator to track the various events that have occurred in the database before. MySQL provides error log, Binlog log (binary log), investigate log, slow query log. Here,
Essays-66 Articles-0 comments-MySQL slow query (ii)-Pt-query-digest detailed slow query log one, Introduction Pt-query-digest is a tool for analyzing MySQL slow query, it can analyze Binlog, Gene RAL Log, Slowlog, can also be analyzed via
Like most relational databases, log files are an important part of the MySQL database. MySQL has several different log files, usually including error log files, binary logs, generic logs, slow query logs, and so on. These logs can help us locate
Directory
I. Optimization Overview
Ii. query and index optimization Analysis
1. performance bottleneck locating
Show command
Slow query log
Explain analysis Query
Profiling Analysis Query
2 Index and Query Optimization
Iii. Configuration
MySQL Slow Query Log)
Like most relational databases, log files are an important part of MySQL databases. MySQL has several different log files, such as error log files, binary logs, common logs, and slow query logs. These logs help us locate the
MySQL slow log (slow log) is a class of information that MySQL DBAs and other developers and operators need to keep an eye on. Use slow logs to find SQL statements, such as long execution times or indexes, to provide a basis for system tuning. This
Find slow SQL statements in MySQL and mysqlsql statements
How can I find slow SQL statements in mysql? This may be a problem for many people. MySQL uses slow query logs to locate SQL statements with low execution efficiency. When the --
Slow query log in MySQL is a very important feature, we can turn on the MySQL slow query log function, so that we can analyze the state and performance of each SQL execution to optimize.One, slow query log configurationTo turn on the slow query log,
This article "My MySQL Learning experience (15)" will explain the MySQL logThe logs in MySQL are divided into 4 categories, and using these log files, you can see what's happening inside MySQL.respectively is1, error log: Log the MySQL service start,
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