MySQL

http://www.osyunwei.com/archives/7464.html (Learning operation and maintenance Knowledge good station)DescriptionOperating system: CentOS 5.X 64-bitMySQL master server: 192.168.21.126MySQL slave server: 192.168.21.127,192.168.21.128MySQL

Sometimes we will meet the "Mysql:error 1040:too many connections" anomaly, one reason is that the amount of access is too high, mysqlserver resistance, this time to consider adding a decentralized reading pressure from the server, Another reason is

to install MySQL ODBC firstThe DSN is then created under ODBC and is under the System DSN. Final Executionexecsp_addlinkedserver @server=' XY ',       --This is the name of the linked server @srvproduct= ' MySQL ',   --you're free to do this

A trigger is a special kind of stored procedure that triggers a run when inserting, deleting, or altering data in a particular table, which has finer and more complex data control than the standard functionality of the database itself.Database

Fault Description: Forum Access appears 502, beginning to assume that the PHP port is occupied, according to the regular check port discovery is not occupied. After the appearance of MySQL can not Connect, reported (2002) Notconnect error, asked

2.mysqlService MySQL StatusMySQL--versionMysql-h Server host address-u user name-P user PasswordExit exitsMYSQL-H host name-u user name-P connection remote MySQL1, database Backup commandMysqldump-h localhost-u root-p--default-character-set=utf8

Install MySQL show not responding, generally shown in the last step of installing the MySQL program 2, 3 items will not move.This is generally the case where you previously installed the MySQL database service entry is occupied.Workaround:One way:

Recently in the maintenance of a WordPress mall project, the mall is multi-station, will be independent of the station to create a few tables. Project on the test server, it seems to be a malicious crawler registration, resulting in thousands of

After work, use your spare time to summarize how to use the Java language for MySQL database backup:Import Java.io.bufferedreader;import java.io.file;import java.io.fileoutputstream;import java.io.IOException; Import java.io.inputstreamreader;import

MySQL database installation and basic configurationThe CentOS6 and RHEL6 system yum contains the MySQL installation package, which is version MySQL5. The name of the RPM package is mysql-server.Use the following command to install the MySQL database:

Excerpt from: http://zuo.ai.xiao.blog.163.com/blog/static/6079155320121293750732/1. Number TypeSigned unsigned storage (bytes)tinyint-128 to 127 0 to 255 1 = 2^8 (one byte equals 8 bit binary)smallint-32768 to 32767 0 to 65535 2mediumint-8388608 to 8

The notes here are for the first time the people who use MySQL can get started quickly ... are very basic instructions. My environment is MySQL server installed on Ubuntu, client side on Windows 7, the most popular client software is Toad for MySQL,

1. Check the MySQL information that is already installedYum List installed mysql*Rpm-qa | grep mysql*2. List installed and installable MySQL informationYum List mysql*3. Installing the ClientYum install MySQL4. Install server-sideYum Install

Primary server: 192.168.2.212from server: 192.168.2.211 Primary Server (192.168.2.212):The first to/ETC/MYSQL/MY.CNF will127.0. 0.1Comment out127.0. 0.1Allow non-native access.Log in to MySQLMysql-uroot-pGrant Replication on *. * to slave@192. 168.

I would like to try to use spring to manage hibernate transactions, when the configuration of spring configuration file, insert data, the result is error, the errors are:Mysql Field * doesn ' t has a default value, I thought my profile or code was

Onethink cannot create a new editor type field under MySQL Clone the latest code is installed, inherits the base document, adds the Detaildesc field to the editor type, and does not have a new table. And the SQL statement is wrong The main reason is

Outside of MySQL key constraintThere are two common engine types for MySQL: MyISAM and InnoDB. Currently only the InnoDB engine type supports foreign key constraints. The syntax for INNODB FOREIGN KEY constraint definitions is as follows:[CONSTRAINT

Self-built MySQL mmm (master-master Replication Manager) high-availability architecture can not see the VIP address, after looking for a large number of articles on the Internet and their usual observation finally found a way to find the VIP address,

Install and use MySQL on MacInstall 1. to MySQL official website to download MySQL Community version, (the author download is mysql-5.6.21) MySQL is divided into commercial version (Enterprise) and Community version (Community), commercial version

Mysql 5.5 Master/Slave configuration steps, mysql The last time I introduced the mysql 5.1 master-slave configuration tutorial, this time we will implement mysql 5.5 master-slave replication, in fact, the configuration is basically the same, only a