I am having an issue on my server. I am running MySQL on Windows Server 2008 R2. I have done some changes to my.ini file so I had to restart the MySQL for the changes to take effect. and when I went to services and tried to start MySQL56 windows gives me this error:

Windows could not start the MySQL56 service on Local Computer. Error 1067: The process terminated Unexpectedly.

I tried rebooting my server and that did not work. I restored the changes that I made to my.ini and that did not work.

What can I do to bring MySQL back up?

  • Anything informative in your logs? – eggyal Jun 13 '13 at 16:18
  • where would i find the logs for mysql? – Mike Jun 13 '13 at 16:21
  • 1
    Depends. Read this. – eggyal Jun 13 '13 at 16:24
  • here is an error InnoDB: Attempted to open a previously opened tablespace – Mike Jun 13 '13 at 16:55

Found the problem. The Log file was full. I had open the my.ini file and increase the innodb_log_file_size variable.


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  • Yes, the default log file size is now 50MB instead of the old 5MB. If you were running with a log file size of 5MB, this was probably a bad bottleneck for you! – Bill Karwin Jun 13 '13 at 17:23

I had the same issue the other day. Try this, it should work!

  1. Right click on MySQL Notifier -> Actions -> Manage Monitored Items

  2. Highlight the MySQL56 entry and click the delete button

  3. Click the add button -> windows service
  4. Scroll down and look for MySQL56
  5. Highlight it and click ok
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