Home Database Mysql Tutorial MySQL大内存配置方案 如my-medium.ini、my-huge.ini等

MySQL大内存配置方案 如my-medium.ini、my-huge.ini等

Jun 07, 2016 pm 04:28 PM
m mysql Memory plan Configuration

MySql noinstall-5.1.xx-win32 配置(原创) 1、解压mysql-noinstall-5.1.xx-win32.zip 到你喜欢的目录,例如:d:\php\mysql 2、在根目录d:\php\mysql中有五个配置信息文件: my-small.ini (内存 = 64M) my-medium.ini (内存 128M ) my-large.ini (内存

MySql noinstall-5.1.xx-win32 配置(原创)

1、解压mysql-noinstall-5.1.xx-win32.zip 到你喜欢的目录,例如:d:\php\mysql

2、在根目录d:\php\mysql中有五个配置信息文件:

my-small.ini (内存 my-medium.ini (内存 128M )
my-large.ini (内存 512M)
my-huge.ini (内存 1G-2G)
my-innodb-heavy-4G.ini (内存 4GB)

假设我的内存是1G的,我选择了my-huge.ini,选择其中一个适合你自己机子的配置文件。

3、编辑my.ini,在[mysqld]的“port=3306”下面增加如下两句:

注意,在Windows中路径名中使用斜杠“/”而不是反斜杠“\”。 如果使用反斜杠“\”,那么必须双写它们“\\”。

# 安装目录的路径 # 设置mysql数据库的数据的存放目录,必须是data,或者是\\xxx\data

basedir="E:/by8/MySQL/"

# 设置mysql数据库的数据的存放目录
datadir="F:/by8/MySQL/Data/"

# 设置mysql服务器的字符集
default-character-set = utf8

# 默认的存储引擎
default-storage-engine = MYISAM

移动“E:\by8\mysql\data”目录到“F:\by8\MySQL\Data”。

在[mysql]下面新增:
default-character-set = utf8

修改以下几句为:
max_allowed_packet = 32M (默认为1M)
sort_buffer_size = 4M (MySQL 5.0.15 my-medium.ini默认为512K)

max_allowed_packet 参数说明:
参数的作用是,用来控制其通信缓冲区的最大长度。

sort_buffer_size 参数说明:
查询排序时所能使用的缓冲区大小。
注意:该参数对应的分配内存是每连接独占!
如果有100个连接,那么实际分配的总共排序缓冲区大小为100 × 6 = 600MB。
所以,对于内存在4GB左右的服务器推荐设置为6-8M。

4、安装服务:
"E:\by8\mysql\bin\mysqld" --install Mysql --defaults-file="E:\by8\Mysql\my.ini"

5、启动服务:
net start mysql

这样mysql就安装好了。你任务管理器当中可以看到mysqld-nt.exe这个进程。说明您的mysql已经安装好了。并成功的启动了。

6、为匿名用户设置密码:

%myd_dir%\bin\mysqladmin.exe -uroot -ptoor password "%my_newpwd%"

刚开始安装好的mysql登录密码是空密码:

C:\Documents and Settings\Administrator>e:
E:\>cd by8
E:\by8>cd mysql
E:\by8\Mysql>cd bin
E:\by8\Mysql\bin\>mysql -uroot -p
Enter password: //这里直接按回车(enter),不需要输入密码的。
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| test |
+--------------------+
3 rows in set (0.00 sec)

为了安全,我们这里修改下刚安装的mysql数据库的root用户的密码 。操作命令如下:

mysql> use mysql
Database changed
mysql> update user set password=password("123456") where user="root";
Query OK, 2 rows affected (0.03 sec)
Rows matched: 2 Changed: 2 Warnings: 0

mysql> exit //退出

就这样我把root的密码修改为了123456。

还有中修改密码的方法是利用msyqladmin这个命令
确认可以登录我们退出mysql
格式:mysqladmin -u用户名 -p旧密码 password 新密码
>exit
>mysqladmin -uroot -password 123456
//我们这里把mysql root的原来的空密码修改成123456,因为原来root没有密码,所以-p 就密码这项就可以省略了。
为了让大家印象更深刻些,我们这里再把已经修改过的密码1234560修改成为 123456
命令:mysqladmin -uroot -p123456 password 1234

PS:MYSQL记录用户名和密码的两张表为:

user.MYD和user.MYI,备份下他们,以后就不用为重装改密码麻烦了

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