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mysqldump error 1194 table is marked as crashed – Repair methods

by | Jun 5, 2021

Stuck with mysqldump error 1194 table is marked as crashed? We can help you.

Generally, we come across the error, “MySQL table is marked as crashed and should be repaired” while using MySQL.

This error appears especially after a forced shutdown of the MySQL database or due to the crash of the entire server.

As part of our Server Management Services, we assist our customers with several MySQL queries.

Today, let’s discuss the possible reasons and MySQL repair methods for this error.

 

mysqldump error 1194 table is marked as crashed

Mostly, low disk space can be a reason for the error. In case we have low disk space, some of the tables in the database may rash.

Usually, this happens when we get space issues on the hard drive where the database is stored.

Though the error seems daunting, we can resolve it. MySQL can repair the crashed tables by itself.

In order to make that happen, our Support Techs suggest a few simple steps.

Quite often, it is hard to identify the specific tables affected by the error. Hence, before the repair, let us have a look at how to identify the corrupted MySQL tables.

 

Identify crashed MySQL tables

We can identify the corrupt tables through certain expected and observable errors in the queries.

For example,

  • Can’t find file tbl_name.MYI (Errcode: nnn)
  • Unexpected end of file
  • Got error from table handler
  • Record file crash
  • Can’t find the file, tablethatshouldbethere.MYI
  • tablethatwasworking.frm locks against change
  • Got error ### from table handler.

In addition, we can run perror to get more information about the error

 

Recover MySQL Crashed Tables

MySQL server provides its own tool, myisamchk to diagnose crashed tables.

# myisamchk -s /var/lib/mysql/*/*.MYI

This command will list the crashed MySQL tables, with a message:

MyISAM-table '/var/lib/mysql/dbname/table_name.MYI' is marked as crashed and should be repaired

In addition, the tool can help repair the damaged table. Generally, if we run the myisamchk command it should solve the problem.

However, if it doesn’t, we try to stop the web service, so as to not generate new requests. we stop the MySQLd daemon itself and run:

# myisamchk -r --update-state /var/lib/mysql/dbname/table_name.MYI

The “–update-state” switch tells MySQL to mark the indicated table as “checked.”

Once done, we restart the MySQLd and web service, and MySQL will repair the crashed table.

This will remove the error and restore the database.

 

Recover database by using backup

On the other hand, an alternative to deal with the error is to recover the database from a previous backup.

A solid backup strategy for the data is essential. When everything goes wrong, instead of searching for the methods to repair, we can look up to it.

So, we need to take regular backup of the database, install directory, and home directories by using database administration or any backup tool.

[Need help to recover? We’d be happy to assist]

 

Conclusion

In short, here we saw how our Support Techs fix the mysqldump error 1194 for our customers.

PREVENT YOUR SERVER FROM CRASHING!

Never again lose customers to poor server speed! Let us help you.

Our server experts will monitor & maintain your server 24/7 so that it remains lightning fast and secure.

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