Solution to the problem that MySQL cannot be started in xampp

All of a sudden Xampp Of mysql I can't open it ：

I'm confused , It can always be opened before , Then just now I started it , It will suddenly fail to start , I thought about , There is no port number occupation problem , And the error message does not say that the port number is occupied , Error reporting is very popular

Then I looked at the log file – It is found that the log file does not describe how to make an error

Then I found a lot of information on the Internet , Say open config Medium my.ini Modify the path in the configuration file , But mine is right , The path and port number are normal

According to the blog steps searched

---- Start the command line with the administrator , Get into mysql Of bin Catalog , Input

mysqld --install, enter ,

Command line window input ：net start mysql , happen 1067 error

But I found a lot of related blogs on the Internet, but they didn't solve the problem

I also try to uninstall Xampp, But the reinstallation will still not start mysql

Finally, you can only delete MySQL service

Use windows Self contained sc Tools

Input ：sc /?

Use sc query Next mysql This service

command ：

sc query mysql

You can see ,mysql Services exist ,status yes stopped

Now let's put mysql The service is deleted

Take a look at deleting windows Commands for services

delete----------( From the registry ) Delete service .

Delete mysql service

command ：

sc delete mysql

Check again , have a look mysql Is the service still available

command ：

sc query mysql

Output:

[SC] EnumQueryServicesStatus:OpenService Failure 1060:

The specified service is not installed .

Many days apart , The same mistake happened again , I can't open it for no reason , This time it's not as hard as last time mysql Unload and reload . I searched a lot of blogs . Still haven't found the right way .

Then I backed up the whole data Catalog , Create a new one data Empty directory , Try to start mysql, I found that there was a wrong report Could not open mysql.plugin table. Some plugins may be not loaded

Permission table , The plug-in table cannot be found , Because it's empty data Directory connection mysql There's no library , It's normal that you can't start it . Repair
find mysql Install under directory bin Catalog , function ：

mysql_install_db

This is equivalent to initializing , You'll find it mysql And some other necessary libraries , The default user is root, And there is no password , At this time, it can be started normally mysql 了 . But the previous database is gone , Go back it up and paste it , By the way, the ibdata1 The file is also pasted . Try again if you can open

summary

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