show global variables

MySQL first time the next morning connected to the wrong, solution com.mysql.jdbc.exceptions.jdbc4.CommunicationsException:Communications link failureCom.mysql.jdbc.exceptions.jdbc4.CommunicationsException:Communications link failure Last packet

1 OverviewThis article will cover the following six types of MySQL logs related conceptsQuery log: General_logSlow query log: log_slow_queriesError log: Log_error, log_warningsBinary log: BinlogRelay log: Relay_logTransaction log: Innodb_log2 Query

Before one of the children's shoes hair:5 version of the mail, in the case of large user volume, if done distributed, if on the back end MySQL on the execution:mysql> show global status like ' thread% ';threads_cached 0Threads_connected

Case Description: The write performance of storage is maintained at around 10MB through Iostat, and the performance of database is worse because of poor write performance. After two hours, Iostat found that the write performance of the

1. Log in to MySQL[email protected]/]# mysql-u root-pEnter Password:Welcome to the MySQL Monitor. Commands End With; or \g.Your MySQL Connection ID isServer version:5.1.66 Source distribution Copyright (c), Oracle and/or its affiliates. All rights

1. First tgz the package in the local decompression, the inside of the tar package to the/root directory of CentOS, using TAR-XVF unzip the tar package, extract out the xdebug-2.2.4, Package.xml,2. Enter Xdebug, execute phpize3. Do not error

Background Introduction mysql5.5 previous version, MySQL master-slave replication is relatively simple    Mysql5.6:gtid,multi-thread replicationMaster1 Enable binary Log log-bin = Master-binlog-bin-index = Master-bin.index2 Select a unique server

This evening a financial subsystem on-line, after the deployment is completed, test feedback program will be convulsions, a while normal, a moment abnormal, reported the following error: Nested exception is

In peacetime and development of the communication and in the forum to answer questions or said that it will find that the frequency of the question is very high. Program error: What does MySQL server has gone away mean? How to avoid it?

Mariadb/mysql Master-slave replicationNODE1:172.16.92.1/16 MARIADB Primary ServerNODE2:172.16.92.2/16 mariadb from the serverThe above nodes are CentOS 7.1Configuring the Environment1. Configure the disc yum source2. Turn off SELinux and

One: The method of killing MySQL connection:Kill thread_id: Kills the current process, disconnectsKill query thread_id: Only Kill a connection to the current SQL, and keep the connection open.Several ways to kill MySQL connections in bulk:1>

Plugin Source AddressHttps://github.com/mcafee/mysql-auditPlug-in Installation methodHttps://github.com/mcafee/mysql-audit/wiki/InstallationPlug - inshttps://bintray.com/mcafee/mysql-audit-plugin/release/1.0.9-5851. View MySQL Plugin storage

The problem with MySQL Error: (2006, ' MySQL server has gone away ') means that the link between the client and MySQL server is broken.The reason for this is generally that the SQL operation takes too long, or that the data being transferred is too

preparatory workServer 1:ip:192.168.4.58 Operating system CentOS6.8 database: MySQL5.6Server 1:ip:192.168.4.88 Operating system CentOS6.8 database: MySQL5.6Prerequisites for master-slave configuration1, MySQL version consistent2. Consistent data in

How to view MySQL default port number and modify port number 2015-03-19 17:42:18 1. Log in to MySQL [Email protected]/]# mysql-u root-p Enter Password: 2. Use the command show global variables like ' port '; View port number

Tag: option lookup operation SQL form error query lis nameThe problem with MySQL Error: (2006, ' MySQL server has gone away ') means that the link between the client and MySQL server is broken.The reason for this is generally that the SQL operation

Original address: http://www.jb51.net/article/23781.htmThe problem with MySQL Error: (2006, ' MySQL server has gone away ') means that the link between the client and MySQL server is broken.The reason for this is generally that the SQL operation

1. Password PolicyThe strength of the password was enhanced in MySQL 5.6, and the Validate_password plugin was introduced. Support for password strength requirements.(1) Install plug-in[[email protected] ~]#

--------------MySQL to implement the database master-slave replication Architecture----------------First, the Environment preparation:CentOS System server 2, a user to do MySQL master server, one for MySQL from the server, configured yum source,

MySQL can specify the Auto_increment property on the column when the table is created, and the IDENTITY property in SQL Server, and Oracle is implemented in sequence way. In MySQL, the system variable Auto_increment_increment,auto_increment_offset