Content reprinted with this blog
Background: My local Win10 has already installed a MySQL instance: the installation path (default) is C:\Program Files (x86)\MySQL;
1 Data preparation
1.1 Copy the folder MySQL, then rename
1.2 Copy data
View the my.in file under C:\Program Files (x86)\MySQL, you can view the port where the MySQL service is started and the storage path of the data
Open C:/ProgramData/MySQL/MySQL Server 5.1, make two copies of MySQL Server 5.1, and rename
2. Modify the port, basedir, datadir in the startup my.ini file
Modify the my.ini file under C:\Program Files (x86)\MySQL\MySQL Server 5.1 - 3307: change the startup port to 3307; change the data storage path to the path corresponding to the previous step: C:\ProgramData\MySQL\MySQL Server 5.1 - 3307\data; root path basedir
The my.ini file under C:\Program Files (x86)\MySQL\MySQL Server 5.1 - 3307 is also modified in the same way: modify the startup port bit 3308; the data storage path is changed to the path corresponding to the previous step: C:\ProgramData \MySQL\MySQL Server 5.1 - 3308\data; root path basedir
3. Set up Mysql as a system service
Enter the MySQL Server 5.1 - 3307 directory and run the command mysqld –install MySQL-l3307 in the bin directory (you can customize the service name)
Same operation for MySQL Server 5.1 - 3308
4. Check the registry:
Run regedit to open the registry and find
HEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/services/
Find MySQL-3307 and MySQL-3308 to see if the value of ImagePath is the corresponding path,
if the value of ImagePath is
C:\Program Files (x86)\MySQL\MySQL Server 5.1 - 3307\bin\mysqld” MySQL-3307
The configuration is successful.
The value of ImagePath when I looked at my registry was:
“C:\Program Files(x86)\MySQL\MySQL Server 5.1 \bin\mysqld” MySQL-3307；
(It does not match its own installation path); because the parameter value defaults to the path of the first MySQL instance during installation, at this time, the value of ImagePath can be manually modified.
5. Start the service:
5.1. Start by command: net start MySQL-3307
5.2. Or find the service in the task manager and start it manually
6 Problems encountered:
6.1 System error 193 occurred.
C:\Users\asus>net start MySQL-3307
System error 193 occurred.
* Not a valid Win32 application.
Solution: There is an empty file of mysqld in the bin directory, just delete it.
