Mysql Error 1034
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Error 1034 (hy000)
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Incorrect Key File For Table Try To Repair It Innodb
takes a minute: Sign up How do you fix a MySQL “Incorrect key file” error when you can't repair the table? up vote 20 down vote favorite 4 I'm trying to run a rather large query that is supposed to run nightly to populate a table. I'm getting an error saying Incorrect key file for table '/var/tmp/#sql_201e_0.MYI'; try to repair general error 126 incorrect key file for table try to repair it it but the storage engine I'm using (whatever the default is, I guess?) doesn't support repairing tables. how do I fix this so I can run the query? mysql mysql-error-126 share|improve this question edited May 5 '11 at 23:24 OMG Ponies 199k37360417 asked Mar 11 '10 at 21:15 Wayne Molina 7,7441770134 the tmp folder has a limit usually 2GB, try df -h to see it –Elzo Valugi Jan 18 '12 at 12:17 add a comment| 6 Answers 6 active oldest votes up vote 1 down vote accepted The storage engine (MyISAM) DOES support repair table. You should be able to repair it. If the repair fails then it's a sign that the table is very corrupted, you have no choice but to restore it from backups. If you have other systems (e.g. non-production with same software versions and schema) with an identical table then you might be able to fix it with some hackery (copying the frm an MYI files, followed by a repair). In essence, the trick is to avoid getting broken tables in the first place.
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Error 126 (hy000): Incorrect Key File For Table ; Try To Repair It
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About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or innodb repair table posting ads with us Database Administrators Questions Tags Users Badges Unanswered Ask Question _ Database Administrators Stack Exchange is a question and answer site for database professionals who http://stackoverflow.com/questions/2428738/how-do-you-fix-a-mysql-incorrect-key-file-error-when-you-cant-repair-the-tabl 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: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Cannot ALTER TABLE up vote 3 down vote favorite I http://dba.stackexchange.com/questions/84607/cannot-alter-table have a particular table that I cannot add a key for: mysql> ALTER TABLE tasks ADD KEY `fruitful_user_count` (`user_id`, `is_fruitful`); ERROR 1034 (HY000): Incorrect key file for table 'tasks'; try to repair it Googling the issue it seems that this problem is often either a configuration issue or a disk space issue. In fact, this database is running on an Amazon RDS instance, which means that it is basically a managed server dedicated to MySQL with a very standard configuration. Also, the disk allocated to us is only about 25% full. Considering that perhaps there disk on the VM (powered by Xen I believe) is full, and not my allocated disk space which is likely not even in the same room (network storage), I rebooted the RDS instance in the hope that I would get a new instance on another VM. However, that did not help. What should be my next troubleshooting step? This is the table: mysql> show create table tasks; +-------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
optimization Table Locks Why they happen, and how to reduce them Reduce Costs Make better use of your server hardware A fix for "Incorrect key file for table '/tmp/#sql_xxxx_x.MYI'" in MySQL By Stephen Jayna, 8th March 2011 http://www.mysqlperformancetuning.com/a-fix-for-incorrect-key-file-for-table-mysql The Most Likely Cause: You're Out Of Space Chances are, that if you're seeing this error, you've run out of space in /tmp or wherever tmpdir points to. If only for the time it takes MySQL to create a temporary file (filling the parition) and delete it in disgust. In Ever So Slightly More Detail DBD::mysql::st execute failed: Incorrect key file for table '/tmp/#sql_4091_0.MYI'; try to repair it [for incorrect key Statement "... The idea of it being suggested that one needs to run a repair on a temporary table should raise an eyebrow. It just doesn't make much sense: it suggests it's somehow corrupted, but since it's transitory and has just been freshly created by MySQL, it should never be needed. Not to mention tricky to implement. In my experience, limited though it is, the primary reason for seeing this incorrect key file error message is because your tmpdir has run out of space. Like me you'll check how much free space you have: 1Gb, 2Gb, 4Gb. It may not be enough. And here's why: MySQL can create temporary tables bigger than that in a matter of seconds, quickly filling up any free space. Depending on the nature of the query and the size of the database naturally. Take this evening for example: I had a temporary table created that was around 3.6Gb in size, from a database that's only 5.4Gb in total, and I had only had 1.8Gb of free space. Imagine a couple of queries of that nature running in parallel. The moment the space has been filled, the above error will be thrown, the temporary file on disk will be deleted, and you'll be none the wiser. Conclusion Perhaps the MySQL instance could be better configured - but that's not the point - the error message is oblique at best. Make sure you've got enough temporary space, you may need more than you imagine. Your Comments You saved my DAY! Thanks a You saved my DAY! Thanks a lot posted at 4:39 pm on Dec 28th, 2011 by Anonymous You are very right What you say is abs