show processlist

How to synchronize the data of two MySQL databases for Mysql database synchronization during development. The two install the same system, both of which are FreeBSD5.4, with Apache 2.0.55 and PHP 4.4.0 installed, mysql version 4.1.15 is the latest

How to query slow SQL statements in MySQL 1. query logs (1) enabling MySQL slow query in Windows In Windows, the configuration file of MySQL is usually my. ini. find [mysqld] and add The code is as follows: Log-slow-queries =

For reprint, please indicate the source: http: blogcsdnnetguoyjoearticledetails48805847 ********************************** MySQL lock management mechanism ********************************** MySQL lock management mechanism ***************************

Recently, it was found that the cpu usage of a database has been compared. More than 200%. First, check the slow log of the database and set the slow log to 5 seconds. basically, no daily log is generated and no more than 5 seconds are generated.

Master-slave replication is widely used in MySQL. it is mainly used to synchronize data on one server to multiple slave servers. it can be used for load balancing, high availability and failover, and backup. MySQL supports a variety of replication

MYSQL deadlock-related searches for bitsCN.com MYSQL deadlock search If a deadlock occurs, how can this problem be solved? Find the original lock ID and KILL the thread that has been held all the time. but how can we find the thread ID that causes

How to query MySQL running STATUS: bitsCN. comSHOW STATUS Log on to MySQL directly under the command line to run the show status command. the query statement is as follows: The same statement also has show variables; and show status is used to

The following is an example of high CPU usage in mysql (adding indexes) bitsCN.com. I hope I will be inspired by my friends who have encountered similar problems. In general, MYQL occupies a high CPU usage, most of which is caused by database query

Mysql replication is asynchronous. Therefore, after receiving a user's request, the result is returned to the user. And store the information in the memory, and then record it into the binary file. This will Mysql replication is asynchronous.

Sometimes, the complexity of relational database systems will confuse you, but fortunately, using MySQL tools to manage queries can avoid these complexities. In this tutorial, Sometimes, the complexity of relational database systems will confuse you,

Oracle transactions refer to SQL statements that need to allocate rollback segments. That is to say, select is not part of oracle transactions. For example, you can run a query and then query in another session. Oracle transactions refer to SQL

Mysql too connector connections solution, mysqlconnections Mysql error prompt too many ons,I recently encountered this error and solved it by checking the information on the Internet. Here I will record it to help friends who need it, The solution

Mysql displays the number of connections and the status show processlist. If it is a root account, you can view the current connection of all users. If it is another common account, only the show processlist connections occupied by you can be seen.

Find the original MySQL deadlock ID. If a deadlock occurs, how can this problem be solved? Find the original lock ID and KILL the thread that has been held all the time. But how can we find the thread ID that causes the deadlock among many threads?

Mysql master-slave Database Synchronization time: Source: Network Author: PHP100er CLICK: 292 Times [font size: large medium small] environment: master server: centos 5.2 mysql 5.1.35 source code IP: 192.168.1.22 slave server: centos 5.2 mysql 5.1.35

Mysql master-slave replication technology (TEST) to start configuration: www.2cto.com Step 1: Create a replication account. Each slave uses the standard MySQL user name and password to connect to the master. The user who performs the copy operation

The previous article briefly introduced the usage of the EXPLAIN statement. Today we will introduce the following: Slow query log Enable slow query log Save slow query logs to the table Slow query log analysis Percona Toolkit Install

The following is an example of high CPU usage by MYSQL. I hope I will be inspired by my friends who have encountered similar problems. In general, MYQL occupies a high CPU usage, most of which is caused by database query code problems. Too many

I. Principles of Replication MySQL replication tracks all database changes (updates, deletions, and so on) in binary logs based on the master server ). Each slave server receives updates recorded by the master server to the storage of its binary

Mysqldump: one of its features is that the list needs to be locked during processing. Therefore, if we need to perform backup during working hours, it will cause DML blocking. However, MySQL usually has master and slave databases, and most of the