Monday, April 25, 2011

Repair MySQL Database to Resolve “Record was already deleted” Error

MySQL is a fast and reliable Relational Database Management System (RDBMS), which stores all your precious data in the form of tables. MySQL tables are very easy to manage and access. Tables enable you to store your significant data in orderly fashion (in form of rows and columns). However, under some situations, you may run across performance issues with the MySQL tables. In such situations, you need to go for MySQL Repair solutions.

You have to always specify the type of table before you enter actual records in the table. But there are some situations where you may find the decreased performance of queries and errors when you try to access the tables. This behavior most probably occurs due to corruption to the table. Table corruption may be the outcome of unexpected system shutdown, application malfunction, virus infection, hard drive errors, and unexpected locking of the tables.

For a real life example of this problem with MySQL database table, you may encounter the following error message while accessing a MySQL table:

“Record was already deleted (or record file crashed)”

This error occurs even if the record is there, but MySQL application is unable to recognize it. At this point, you have to find out the main cause of the problem and then repair MySQL database by fixing it.

Root of the problem:

The major reason of this problem is corruption of the MySQL table. Corruption occurs due to virus infection, application malfunction, improper system shutdown, and other similar reasons.

Resolution:

Try any of the below MySQL repair solutions to fix this problem:

• Log into the MySQL as an administrator.
• Use the CHECK TABLE command to make sure the problem is caused by table corruption.
• If corruption is reported, then use REPAIR TABLE command, which is an inbuilt solution to repair MySQL database.
• If you fail to recover MySQL database using any of the above methods, then you have to restore data from an updated backup.
• In case, backup is not available, MySQL recovery software come for your help.

These are effective third-party applications that help you repair and restore a damaged database in all cases of corruption. They offer absolute recovery using advanced scanning and recovery algorithms. Such applications are useful with MySQL 6.x, 5.x, 4.x, and 3.x versions. One of the most powerful MySQL database recovery software is Stellar Phoenix Database Recovery for MySQL.

Tuesday, April 19, 2011

Repair MySQL Database to Handle MYI File Corruption

MySQL is a comprehensive and efficient Relational Database Management System (RDBMS), which manages your data effectively using the storage engines. There are two major Storage Engines used by MySQL- MyISAM and InnoDB. In most of the MySQL versions, MyISAM is the standard storage engine that uses older ISAM code as a base. Sometimes, MySQL can not open the files of the MyISAM storage engine and you run across data loss. The problem can be due to corruption to the database and put you in need of MySQL Repair solutions.

The MyISAM tables are made up of several files, such as .MYI (MyIndex), .MYD, and .frm files. The MYI is the index file of MyISAM that is used to store the table indexes. However, there are some situations where MySQL can not open the Index file. The most probable reason of this behavior can be corruption to this file. It leads to severe data loss problems and thus you have to repair MySQL database using -advanced MySQL recovery techniques.

As an example of this problem with your MySQL database, you may encounter the below error message while accessing data from the database:

“can't find file: .MYI”

At this point of time, it becomes essential to find out the actual cause of the problem and sort it out using MySQL repair tools.

Root of the problem:

As sated in the above error message, the problem occurs due to corruption to the MYI file. MySQL Index file corruption may be the outcome of unexpected system shutdown, application malfunction, virus infection, improper editing of the database, and more.

Resolution:

You can Repair MySQL Database in such situations using any of the following methods:

• Check database corruption using inbuilt MySQL commands, like CHECK TABLE, myisamchk, and mysqlcheck.
• If corruption is detected, using REPAIR TABLE command to fix it.
• In case problem persists, restore MySQL database from recent backup.
• When all else fail, use third-party MySQL recovery software to repair and restore the database.

Such applications are very handle to effectively fix database corruption in all scenarios. They have pretty simple graphical user interface to offer easy recovery. One of the most popular MySQL recovery software is Stellar Phoenix Database Recovery for MySQL. It works well with both MyISAM and InnoDB storage engines.

Tuesday, April 5, 2011

MySQL Repair to Fix Storage Engine Corruption

MySQL is a popular and effective Relational Database Management System (RDBMS), mainly used for websites. It uses storage engines to effectively store your business-critical data. They play an important role in efficient storage and wonderful accessibility of data. The major storage engines of MySQL database are InnoDB and MyISAM. If storage engine faces any issues like corruption, database become inaccessible and data loss occurs. In such critical situations, you need to opt for MySQL repair solutions.

Storage engine, like InnoDB is a standard component of the database. It uses a number of libraries to manage your precious data. However, there are some situations where you find that your database become inaccessible due to storage engine corruption. In a practical example of this problem, you may run across the below error message when this issue occurs-

“Uncategorized SQLException for SQL []; SQL state [HY000]; error code [1030]; Got error 134 from storage engine; nested exception is java.sql.SQLException: Got error 134 from storage engine”

Your MySQL database become unusable and inaccessible when you encounter this error. When you face this problem, you need to identify the actual cause of this issue and repair MySQL database using appropriate tools.

Grounds of the problem-

As stated above in the error message, this behavior usually occurs due corruption to the InnoDB storage engine. InnoDB is a significant part of MySQL database and must be in working state to access your data. The corruption may occur due to a wide range of reasons, such as-

  • Infection of malicious programs like viruses.
  • Improper system shutdown or application malfunction.
  • MySQL application crash.
  • Improper editing of the database.

Resolution-

You can try any of the below methods to repair MySQL data in such situations-

  • Try inbuilt queries to fix the corruption.
  • Restore database from a complete backup.
  • Use third-party MySQL repair software to extract inaccessible data from the database.

MySQL recovery tools are capable of performing in-depth scan of whole database and recovering all inaccessible data from it. They come equipped with highly interactive and rich graphical user interface to offer easy recovery. The database recovery software do not alter original content as of their read-only conduct.