mysql slow delete

Logs in MySQL include: error log, binary log, General query log, slow query log, and so on. Here is the main introduction of the more commonly used two features: General query log and slow query log.1) General query log: Records established client

This article describes how to analyze MySQL slow query logs by setting parameters to analyze the causes of performance problems, for more information, see query. Currently, most databases provide performance analysis tools. For example, Oracle will

Slow query of MySQL-delete slow query logs I. environment OS: CentOS release 5.8 (64-bit) DB: MySQL5.5.17 II. operations Run the rm-f command to delete the slow query log. III. problems The slow query log is not automatically generated. (if

MySQL turn on slow query log MySQL accelerated query speed of a unique weapon: query cache on the MySQL query cache from five angles for detailed analysis: How to query cache, how to configure, how to maintain, how to determine the performance of

Slow Query Log1. The slow query log is logged when the query does not return results for a certain amount of time.2. The slow query log helps DBAs find SQL statements that perform inefficiently and help with database optimization efforts.3. The slow

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

An introduction The principle of two indexes Three-indexed data structures Three MySQL index management Four Test indexes Five correct use index Six query optimization artifact-explain The basic steps of seven-slow query

The query is the most problematic database response. Most databases now provide the means to help with performance analysis. Oracle, for example, will help you find the slow statements directly and provide an optimization solution. In MySQL, you

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,

**************************************** ****************** The first part is to build a multi-mysql service on a server. **************************************** ****************** I. xuyan There is a mysqld_multi command in Mysql that can be used