Database Administrators Stack Exchange is a question and answer site for database professionals who wish to improve their database skills and learn from others in the community. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

i installed apache and mysql 5.5 on windows 7 64 bit. it worked but today mysql can not start. when i see at error log i find this

120616 16:35:47 [Note] Plugin 'FEDERATED' is disabled.
120616 16:35:48 InnoDB: The InnoDB memory heap is disabled
120616 16:35:48 InnoDB: Mutexes and rw_locks use Windows interlocked functions
120616 16:35:48 InnoDB: Compressed tables use zlib 1.2.3
120616 16:35:48 InnoDB: Initializing buffer pool, size = 103.0M
120616 16:35:48 InnoDB: Completed initialization of buffer pool
120616 16:35:48 InnoDB: highest supported file format is Barracuda.
120616 16:35:50  InnoDB: Operating system error number 1117 in a file operation.
InnoDB: Some operating system error numbers are described at
InnoDB: File name .\ib_logfile0
InnoDB: File operation call: 'Windows aio'.
InnoDB: Cannot continue operation.

i search "InnoDB: Operating system error number 1117 in a file operation." and find this link but i cant open mysql site. what is problem? what can i do?

share|improve this question

from System Error Codes (1000-1299)

1117 (0x45D)
The request could not be performed because of an I/O device error.

It seems that you had a problem with your disks

share|improve this answer
+1. vote up require 15 reputation! – shayan Jun 17 '12 at 8:48
up vote 1 down vote accepted

i find this link. i removed the ib_logfile0 or ib_logfile1 in the data folder and it works. but i don't know what is problem with this log files!

share|improve this answer
i met this error too, but it doesn't work after i delete 2 logfile... then i got this error:… – Scott混合理论 Apr 18 '13 at 6:59

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.