Mysql Got Error 127 When Reading Table
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component of the database that allows you to store data in an organized manner. Thus, you can easily manipulate them and get effective query results. But sometimes, these tables give unexpected results and error messages. The reason could be table mysql error 127 when fixing table corruption, which needs to be restored from backup. However, if backup falls short of restoring
Mysql Repair Table
data, you should use commercial MySQL Database Recovery applications. You might receive the below error message in mysqld error log: "[ERROR] Got error
Mysqlcheck
127 when reading table " You receive a series of such error messages. Cause The prime cause of this error message to occur is table corruption. A MySQL table might get corrupt due to any of these reasons: mysqld process is killed unexpectedly Hardware issues MySQL code or MyISAM/InnoDB code is suffering from bugs An external program and server is modifying the same table at the same time Unexpected system shutdown Solution To correct table corruption, you should follow these steps in order: You should first check the table for corruption using CHECK TABLE command. To run the command, make sure that the server is running. This check is used with following syntax: CHECK TABLE tablename [options] Here, options used are FAST, QUICK, MEDIUM etc. If CHECK TABLE command gives corruption errors, you should repair it using REPAIR TABLE command. Before running the command, ensure that about twice as much disk space as of affected table is present on disk. The syntax is as: REPAIR TABLE tablename [options] Here, options used are QUICK, EXTENDED etc. Again, check the table for corruption. If table still remains corrupt, you should delete the damaged table if you have a valid database backup. In case, no database backup is available or it seems to be damaged or incomplete, make use of third-party MySQL Recovery utilities. These software are specifically designed to scan damaged MySQL databases and correct corruption errors. Designed to perform thorough database repair, these MySQL Database Recovery tools provide advanced file repair functionalities, while maintaining data integrity. Stellar Phoenix Database Recovery For MySQL is the finest utility to repair and restore damaged MySQL databases. It restores files created with InnoDB (.ibdata, .ibd and .frm) and MyISAM (.myd, .myi and .frm) database storage engines. It supports MySQL 5.x. This MySQL Recovery is compatible with Windows Vista, XP, 2003, and 2000. It can repair databases created with both Windows and Linux platforms. Naveen Kadian is a self employed Internet entrepreneur and product reviewer Stellar Phoenix Database Recovery F
Community Podcasts MySQL.com Downloads Documentation Section Menu: MySQL Forums :: MyISAM :: Got error 127 when reading table New Topic Advanced Search Got error 127 when reading table Posted by: Reto Heygel () Date: December 18, 2007 09:56AM We get an error 127 every 5 or 6 days now on different, but heavily used tables, for example orders or customers. Usually there's an INSERT command some time before the error first occurs, but I can't see a pattern and reproduce the error. Since the error always occurs during day time, the problem might occur under heavy load only. orders.MYD is 219M, http://www.planetrubyonrails.org/60/got-error-127-when-reading-mysql-error-and-recovery customers.MYD is 18M. We're running 5.0.32-Debian_7etch1-log. REPAIR TABLE works, but usually there's one record missing after repairing the table. Our server is replicated to a slave, where the error doesn't occur. Since this is our productive system I can't do much experimenting. What can be done to avoid this error? Is there a known bug for this version? Navigate:Previous Message•Next Message Options:Reply•Quote Subject Views Written By Posted Got http://forums.mysql.com/read.php?21,188681,188681 error 127 when reading table 10184 Reto Heygel 12/18/2007 09:56AM Re: Got error 127 when reading table 6580 Nick B 01/09/2008 03:01AM Re: Got error 127 when reading table 4325 Shane Bester 02/05/2008 05:09PM Sorry, you can't reply to this topic. It has been closed. powered by phorum Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party. Contact Sales USA: +1-866-221-0634 Canada: +1-866-221-0634 Germany: +49 89 143 01280 France: +33 1 57 60 83 57 Italy: +39 02 249 59 120 UK: +44 207 553 8447 Japan: 0120-065556 China: 10800-811-0823 India: 0008001005870 More Countries» Contact Us Online» Products MySQL Enterprise Edition MySQL Standard Edition MySQL Classic Edition MySQL Cluster CGE MySQL Embedded (OEM/ISV) Services Training Certification Consulting Support Downloads MySQL Community Server MySQL Cluster MySQL Fabric MySQL Utilities MySQL Workbench About MySQL Contact Us How to Buy Partners Job Opportunities Site Map Documentation MySQL Reference Manuals MySQL Workbench Expert Guides Topic Guides MySQL Cluster Legal Legal Policies Your Privacy Rights Terms of Use Trademark Policy Contributor Agreement © 2015, Oracle Corporation and/or its affiliates
log in tour help Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads http://dba.stackexchange.com/questions/40396/mysql-tables-require-daily-repairs-server-table-or-hd 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 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 MySQL Tables Require Daily Repairs - Server, Table or HD? up vote 3 error 127 down vote favorite I've been experiencing a weird issue with one of MySQL DBs. Every day, sometimes 2-3 times per day, I'll need to repair the tables. The MySQL DB has 25 tables with 5.6m rows in total. The bigger ones are: Table A - 599k rows / 867MB Table B - 2.1m rows / 146MB Table C - 2.2m rows / 520MB It seems table C needs to be repaired pretty frequently, Tables A & B not as much. When the table needs to error 127 when be repaired, I'm not seeing it being marked as crashed or in use. But through other tools, I can see the data is not what it should be. When I do repair the table, I'll see a message similar to: [table c] repair info Wrong bytesec: 54-55-102 at 368251940; Skipped [table c] repair warning Number of rows changed from 2127934 to 2127931 or [table c] repair info Wrong bytesec: 171-30-101 at 341237312; Skipped [table c] repair warning Number of rows changed from 1984585 to 1984582 I've tried making adjustments in my.cnf but no difference. The server is a cloud server running both MySQL and Apache. Plenty of space available on all HDs: Filesystem Size Used Avail Use% Mounted on /dev/xvda2 99G 14G 80G 15% / tmpfs 1.9G 0 1.9G 0% /dev/shm /dev/xvda1 97M 49M 44M 53% /boot /dev/xvdc1 296G 25G 257G 9% /data I'm not sure if this is a problem with the cloud HD, the server or the tables themselves. The problem didn't start happening until about 2 months ago and the size of the DB has only changed by 300-400MB until now. Any idea what I should be looking at to verify where the problem might be? Using MySQL v5.1.66 and MyISAM Thanks in advance. Best, Cent mysql myisam share|improve this question asked Apr 18 '13 at 18:39 CentDEV 162 are you seeing anything in the error log? –Derek Downey Apr 19 '13 at 1:59 From the mysql.log, I see these: 130418 8:44:41 [ERROR] Go