Fixing “Tablespace Error” Post power failure in MySQL

Published by Jacob Martin on April 16, 2015

In MySQL database, tablespace is a storage objective where the data related to database objects are kept. MySQL database consists of at least one tablespace which can be forwarded when it is required. These tablespaces tend to increase the performance of the database but at the same time corruption in all these logical storage units can also result in unmountability of database which further lead to database records inaccessible. However one of the major reasons for the corruption of tablespace is due to improper shutdown of MySQL server when there is a sudden power failure.

There are many such situations where you will receive error message and the error is “Tablespace error”. Therefore to get complete accessibility of database records and to beat the error message, one effective way is to bring back the data with the hep of an updated backup. But in some cases, backup does not able to recover the particular content. Therefore in such situation, there is a requirement of an advanced third party tool like MySQL repair Tool.

To know in details about the error message, take a practical sitaution where your MySQL server experiences sudden power failure. When you attempt to mount your database next time then you get the error message:

“InnoDB: If you get repeated assertion failures or crashes, even

InnoDB: immediately after the mysqld startup, there may be

InnoDB: corruption in the InnoDB tablespace.”

When you get the error message pop-up, the database becomes unmountable. Due to this, further results in inaccessibility of all the records. Moreover the above error message appears every time whenever you try to mount your MySQL database.

Cause:

As discussed in the error message above, the InnoDB database tablespaces gets corrupt because of improper server shutdown.

Resolution:

However to solve the above tablespace error message and to access the database, you will need to use follow the below steps:

• Restart MySQL using innodb_force_recovery = 4 option.
• Restart MySQL using innodb_force_recovery = 6 option.
• Run ‘reiserfsck’ to fix corrupt file system.

But when the above resolutions fail to repair the above error message then you will need to use an effective third party tool like MySQL File Repair Tool. In fact there are lots of applications which can give you the opportunity to restore the information from the corrupted or damaged database.

Therefore it will be better to use MYSQL Repair Tool as this is powerful data recovery software to repair the corrupted MySQL server database files. In sudden case when the database fails or requirement of reliable software to recover the important data then this repair tool meet all these requirements. This repair tool can be easily downloaded from the internet and can be used by any one. With the help of this software, you can restore information in transact-SQL script which is accurate for quick database recreation. And also it recovers table structure and data. MySQL File Repair Software is easy to use and does not require any special skills.

Steps to Fix “Tablespace Error” Post power failure in MySQL

Step 1: Download, install and launch the MySQl Database repair tool.

Step 2: Click ‘Select’ button to find and add corrupt MySQL database to the application and then select OK. Here you have the option of ‘Repair corrupt database which is stored at default location of MySQL’ and ‘Manual option to selct your database from default location’.

Step 3: After the scanning process you can now see the preview of the file in the left panel of the software.

Step 4: Now you can start the reairing process, just click on Repair button. A dialoguie box will appear. Click Yes.

Step 5: After successful completion of the process, a message box is displayed as ‘repair process finished successfully’. Click ‘OK’ to close the message box.

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