1,我们可以通过set来设置autocommit
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mysql>set global init_connect="set autocommit=0" //提示你用权限更高的财户来设置
ERROR 1227 (42000): Access deniedyou need (at least one of) the SUPER privilege(s) for this operation
mysql>set autocommit=0
Query OK, 0 rows affected (0.00 sec)
mysql>select @@autocommit //查看一下autocommit的设置
+--------------+
| @@autocommit |
+--------------+
|0 |
+--------------+
1 row in set (0.00 sec)
2,我们可以修改mysql的配置文件my.cnf来关闭autocommit
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[mysqld]
init_connect='SET autocommit=0' //在mysqld里面加上这些内容
用第二种方法关,有一点要注意,连接mysql用户的权限不能大于启动mysql的用户的权限,不然init_connect='SET autocommit=0'根本不会启作用,也不会报任何错误,汗一个先。看以下实例
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zhangy@ubuntu:~$ mysql -umysql
Welcome to the MySQL monitor. Commands end with or \g.
Your MySQL connection id is 1
Server version: 5.5.2-m2-log Source distribution
Type 'help' or '\h' for help. Type '\c' to clear the current input statement.
mysql>select @@autocommit//mysql是启动用户,关闭autocommit成功
+--------------+
| @@autocommit |
+--------------+
|0 |
+--------------+
1 row in set (0.00 sec)
mysql>Ctrl-C -- exit!
Aborted
zhangy@ubuntu:~$ mysql -uroot
Welcome to the MySQL monitor. Commands end with or \g.
Your MySQL connection id is 2
Server version: 5.5.2-m2-log Source distribution
Type 'help' or '\h' for help. Type '\c' to clear the current input statement.
mysql>select @@autocommit //用root财户启动,不成功。
+--------------+
| @@autocommit |
+--------------+
|1 |
+--------------+
1 row in set (0.00 sec)
这个会不会是mysql的bug呢?我在网上找了找这方面的问题,还真有。部分内容如下:
If a user has SUPER privilege, init_connect will not execute
(otherwise if init_connect will a wrong query no one can connect to server).
Note, if init_connect is a wrong query, the connection is closing without any errors
and next command will clause 'lost connection' error.
里面有一点说的很清楚If a user has SUPER privilege, init_connect will not execute,如果用户有更高级的权限,init_connect根本不会执行。
这一条安装命令,Installing MySQL 5.6.21 using MySQLInstallerConsole.exe win10状态下,从开始-->所有应用--->管理工具--->任务计划程序-->左侧任务计划程序库文件夹(或直接用快捷方式win+Q 输入 任务计划程序 点击上面的程序进入)2
展开文件夹-->mYsql子文件夹installer,点击。在右侧窗口右键点击鼠标,选择“禁用”即可,如下图:
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