Tuesday, December 29, 2009

MySQL Database Corruption post Collation Issues

Now-a-days, most of the web sites use MySQL database to maintain and store their records. However, the need to change the hosting of the web site arises when the user wants to shift to some other server. To do so, the user also needs to transfer the MySQL database from one server to another. The three ways by which the user can shift his/her database to another server are using phpMyAdmin, command line mysql client tools, and other third-party applications. While shifting MySQL database shifting to some other server is an easy task, the process can also result into corruption of database. In such situations, the records stored in the database become inaccessible. For easy access of MySQL database records in these corruption scenarios, you will need to restore the data from an updated backup. But, in case of absence of an updated backup or backup file getting corrupted, you will need to use advanced MySQL Repair application that can repair your database.

Consider a practical case, where create a large MySQL database that also contains some Turkish characters. You transfer your database from a dedicated server to a shared server. However, when the transfer process is complete, your database becomes corrupt. This can be easily identified as the Turkish characters do not display correctly in the database.

Cause:

The root cause for the corruption of your MySQL database could be interrupted or incomplete transfer.

Resolution:

To repair your corrupted MySQL database you will need to use the “Repair” command to perfectly repair your database. The syntax for the command is as follows:

repair table tablename [,tablename1...][options]

While the repair command proves successful in most cases, the command fails to repair when the corruption level is too high. For such severe corruption situations, only an advanced MySQL Database Repair utility can help. Such Repair MySQL Database tools use advanced scanning methods to orderly repair the corrupt database and restore it on user-specified location. With interactive user documentation and interface, the software becomes easily understandable to both technical and non-technical users. The software is absolutely non destructive in nature.

Sunday, December 27, 2009

Table Corruption after running of Flush and Optimize Commands

There are numerous MySQL commands (with different syntax) that help you to systematically maintain your database. Out of the various commands, the two most common MySQL commands are Flush and Optimize. The Flush command reloads or clears all the internal patches used by MySQL. For using the Flush statement, you will need to have the RELOAD privilege. The Optimize command is used to defragment the database file and to reclaim the unused space. While both the commands hold different functionalities, using these commands one after the another can result into corruption of table. In such situations, the data stored in the table becomes inaccessible. For complete accessibility of table records in such situations, a fundamental way is to restore the data from an updated database backup. But if in case, the backup file is unavailable, then you will need to use advanced MySQL Repair to repair the table.

As a practical case, you run the command “Flush tables” and then immediately run “Optimize table” command. After doing so, the table on which the commands are running gets corrupt and the records stored in it become inaccessible.

Cause:

The root cause for table corruption is that these commands do not wait for each other to perform there particular tasks.

Resolution:

An easy way to repair the corrupted tables is to run the below commands:

1.Check the corruption limit of the table using underneath statement:
mysqlcheck [options] dbname tablename [tablename2... ]
2.Repair the corrupt table using below statement:
repair table tablename [,tablename1...][options]

The above steps enable you to repair the table and bring back the table in working state. But if in case, the above steps fail to resolve the corruption, then it means that the table is beyond the capabilities of Repair command. In such scenarios, the only way to repair your table is by using advanced MySQL Database Repair utility.

These Repair MySQL Database applications use powerful scanning and repairing procedures that enable you to repair the table completely. With highly graphical user-documentation, the software is self explanatory and does not require any technical understanding.

Monday, December 21, 2009

MyISAM Table Corrupted due to Improper Indexing

Indexes in MySQL are primarily used to increase the data accessing and retrieval speed of records stored in the database tables. While correct and orderly indexing of data provides the user with lots of benefits, a badly indexed table can result into corruption of tables (primarily when the query is fetching millions of records). Once the table is corrupted, the data stored in it becomes inaccessible. To surmount the effects of table corruption and to access the data stored in the table, you will need to restore the data from an updated backup (mainly maintained on some other storage media). However, in case of backup unavailability or backup falling short to restore, then you will need to search for powerful MySQL Repair software.

As a practical scenario, you have approximately 2 millions rows saved in your MyISAM table. When you run a query to view all the records stored in the table, the table crashes. Once the table crashes, all the records stored in it become inaccessible.

Cause:

The root cause for table corruption is that table is badly indexed.

Note: In most cases of MyISAM table corruption, you encounter an error message.

Resolution:

The error message and the MySQL database corruption can be resolved by following the underneath steps:
1.You will need to check the limit till the table is corrupted by using below command:
mysqlcheck [options] dbname tablename [tablename2... ]
2.Next, repair the table using the underneath command:
repair table tablename [,tablename1...][options]

The above two steps repair the corrupt MyISAM table in most corruption scenarios. However, there might be situations where the table does not repair, then it means that it is severely corrupted. To repair the table in such situations, you will need to opt for effective MySQL Database Repair software.

A third-party MySQL Repair tool is an easy to understand repair application that systematically repairs MySQL database tables with ease. Such tools use advanced scanning methods to scan and repair the corrupt table. In addition, these applications provide safe repair by not deleting or modifying the original content.

Saturday, December 19, 2009

MySQL Table corruption post Migration to MySQL5

With the newer versions of MySQL coming into the market, it becomes obvious for the database users to migrate to the new version. Migration primarily allows you to use the additional functionalities of the new version. Few additional functionalities could be increased speed and security. While migration allows you with numerous benefits, it might also result in corruption of database. Once the database is corrupted, it becomes unmountable making its records inaccessible. In such situations, an updated database backup acts as a boon and allows you to restore the database components. However, there are many occasions where the users either forgets to create a database backup or backup falls short to restore the required data. For such scenarios, only an advanced MySQL Repair software can help.

As a practical case, you migrated your MySQL database from MySQL 4.1 to MySQL5. After doing so, when you attempt to access the records stored in your tables, you receive the below error message:

“wikidb.archive1
Error : Table 'wikidb.archive1' doesn't exist
error : Corrupt
wikidb.categorylinks1
Error : Table 'wikidb.categorylinks1' doesn't exist
error : Corrupt
wikidb.externallinks1
Error : Table 'wikidb.externallinks1' doesn't exist
error : Corrupt
wikidb.filearchive1
Error : Table 'wikidb.filearchive1' doesn't exist
error : Corrupt”

The error message clearly indicates corruption of MySQL tables.

Cause:

Migration can result into MySQL database corruption under following circumstances:

Incomplete migration
Compatibility Issues

Resolution:

To resolve the above error message and to access the data stored in tables, you will need to follow the below steps:

1.Check the extent of table corruption using mysqlcheck [options] dbname tablename [tablename2... ] command.
2.Repair the table using repair table tablename [,tablename1...][options] command.

The overhead steps confirm complete repair in most of the table corruption scenarios. However, if the above steps fail to solve the purpose, then you will need to use advanced MySQL Repair application. Such Repair MySQL Database tools use extensive scanning methods to repair corrupt database objects in most cases. Their interactive user interface makes them easy to understand and implement. In addition, these tools neither delete or modify the original data stored in the database.

Tuesday, December 8, 2009

MySQL Server crash after passing MySQL open file limit

The file descriptor limit in Windows operating system restricts simultaneous opening of the files to a defined limit of 2048. The limit further causes severe performance issues for a busy MySQL server, because the table cache value needs to be greater than 2048. In most of these scenarios, MySQL server crashes resulting in corruption of MySQL database. In addition, the database becomes unmountable and its records inaccessible. To access your database records in such scenarios, you will need to restore the data from a valid and complete database backup. But if in case, your database is not available or backup file is corrupted, an advanced third-party MySQL Repair application always helps by performing a complete repair.

As a practical instance, your MySQL Server is already running busy and when you attempt to open some more tables, your server crashes displaying the below error message:

“080726 6:06:11 [ERROR] Error in accept: Too many open files
080726 6:08:16 [ERROR] /home/sbester/mysql/5.1/mysql-5.1.28-linux-i686/bin/mysqld: Can't
open file: './test/t1_tmp.frm' (errno: 24)
080726 6:08:17 [ERROR] /home/sbester/mysql/5.1/mysql-5.1.28-linux-i686/bin/mysqld: Can't
open file: './test/t_@002d123.frm' (errno: 24)....”
Your MySQL server shuts down expectedly after the above error message.

Note: In most cases of improper shutdown of MySQL server, your database becomes corrupt and inaccessible.

To prevent database corruption caused due to above reason, you should exceed the default open file limit to 16384 or more by using max-open-files directive in MySQL. For repairing your corrupted database, you should follow the below steps:

1.Use the below command to check the level of corruption:
mysqlcheck [options] dbname tablename [tablename2... ].
2.Repair your database using the below command:
repair table tablename [,tablename1...][options]

The above resolution proves successful in repairing your database after all logical crash scenarios. But the possibilities of failure of the above method also do exist. In such situations, you will need to use advanced MySQL Database Repair application. Such MySQL Recovery tools perform comprehensive repair after by incorporating intensive scanning and repair techniques.

Monday, December 7, 2009

“Error Signal 11” at MySQL Server Startup

Error message at the startup of MySQLD (MySQL Server) primarily occurs when the database is corrupted or damaged. Few main factors responsible for MySQL database corruption are improper MySQLD shutdown, concurrent modification of same database component, and software bugs. Two major outcomes that you might encounter after database corruption are unmountability of database and inaccessibility of records. To surmount both these hazards and easily access the database records, a standard way is to restore it from an updated database backup. However, in case of database backup unavailable, the only alternative left is to repair your database using powerful MySQL Repair application.

Consider a scenario, where you encounter the below error message when you attempt to start MySQLD:

“MySQL got signal 11”

After the above error signal appears, MySQLD shuts down automatically and then restarts on its own, resulting in improper shutdown of your MySQLD.

Note: If the above scenario occurs several times in a single day, the probability of severe database corruption increase manifold.

Cause:

The root cause for the occurrence of the above error message is hitting of MySQLD with a bug.

Resolution:

If your database gets corrupted due to improper shutdown of MySQLD, then you can repair your database using below steps:

You will need to check the level of corruption by running the underneath command:
mysqlcheck [options] dbname tablename [tablename2... ].
After determining the level of corruption, you will need to use the below command to repair your database:
repair table tablename [,tablename1...][options]

The above steps prove successful in repairing the corrupted database in most of the corruption scenarios. However, if the above error message persists even after following the above steps, then it means that database is badly corrupted and requires a powerful third-party MySQL Recovery software.

Such MySQL Repair tools provide comprehensive database repair by throughly scanning the database using high-end scanning methods. With highly interactive user-interface and to-the-point documentation, these software are self-explanatory without any technical knowledge. Moreover, these utilities are non-destructive in nature and perform recovery without making any modifications in original file.

Saturday, December 5, 2009

Upgradation to 5.1.28 results in MySQL Database Corruption

Upgradation to a new version of MySQL database server allows you to remove all the bugs in the previous version. It also enables you to improve the server performance, security, and retrieval results. While upgradation allows you with numerous benefits, it can also result in corruption or damage of your database. In such situations, your database becomes unmountable and its records inaccessible. To successfully access your database records, an ideal way is to restore your database from an updated backup. However, there have been thousands of case studies where the user has either not created any backup or its backup file has been corrupted or damaged due to various internal or external factors. For such corruption scenarios, you will need to repair your database by using advanced MySQL Repair software.

Consider a practical scenario, where you upgraded your system from 5.0.27 to 5.1.28 on Windows Vista operating system. However, when the upgradataion is complete and you attempt to access your database components, they become inaccessible. Furthermore, you also encounter an error message stating that your tables have been corrupted.

Cause:

Few main causes for the corruption of tables are discussed below:

Improper upgradataion
Incomplete upgradation

Resolution:

To resolve the above error message and to access your database records, you will need to follow the below steps:

1.Downgrade to the previous version of MySQL database server.
2.Restore data from an updated backup.
The above resolution proves successful in most of corruption scenarios. The resolution only fails to perform when you have not created any database backup or the backup is corrupted. In such circumstances, the only way left to repair your database and to access the records is by using a powerful third-party MySQL Database Repair application.

Such MySQL Recovery applications use intensive scanning techniques to repair and restore all MySQL database components. With highly graphical user-interface, these tools are easy to understand without any former technical understanding. These non-destructive applications provide safe repair by not making any changes in the original database file.

Wednesday, November 25, 2009

Delete Operation resulting in MySQL Table corruption

As the name suggests, Delete statement is used to delete selected or all rows from the table. The statement also returns a count of all the rows deleted by the user. However, the user always needs a delete privilege to perform delete operation. While the delete operation is safe and easy to perform, it can also result in corruption of the MySQL table. In such situations, the data stored in the table becomes inaccessible and you receive an error message. To overcome such error message and access the data stored in MySQL table, an updated backup always acts as a boon. But if you have not maintained any database backup or back falls short to restore the required data, then you will need to use efficient third-party MySQL Repair application.

Consider a practical scenario, where you run a delete query to delete some records. However, instead of query deleting the records, below error message pops up stating that the table has been corrupted:

“InnoDB: Failing assertion: fil_page_get_type(page) == FIL_PAGE_TYPE_BLOB...”

After the above error message appears, the records stored in the table become inaccessible.

Cause:

Two reasons responsible for the occurrence of the error message could be buggy BLOB handling code or installation of wrong version of MySQL database server.

Resolution:

To completely resolve the above error message and to access the data stored in the table, you will need to follow the below steps:

1.Run check table on corrupt table
2.Then run repair table command on that table
3.Try and re-run the Delete command.
There is still a slight possibility that your table still remains corrupted after following the above steps. For successful and complete repairing of table, you will need to use an advanced MySQL Recovery software. Such tools use powerful repairing methods to provide absolute MySQL Repair in all situations. With interactive user-interface, these tools are easy-to-understand without any prior technical knowledge. These non destructive tools ensure safe repair of database without making any changes in the original MySQL database.

Saturday, November 21, 2009

MySQL Database Table Repair post Power Outage

One of the most common reason for improper shutdown of MySQL Server is power outage. A power failure primarily results in breaking the continuity of the ongoing process resulting in the corruption of MySQL database. In most cases, when you attempt to access the MySQL database after power outage, you encounter an error message that does not allow the database to mount eventually resulting in inaccessibility of records. A standard way to overcome the problems created due to error message is by restoring the data from a valid and updated backup. However, there are possibilities that your backup might get corrupted or damaged. In such situations, only a powerful third-party MySQL Database Repair software can help.

Consider a practical scenario, where you encountered power outage while you were updating some records in Employee table. However, when you restart your system and run a query to view the updations made in Employee table, you encounter the below error message:

“Checking MyISAM file: ric200503
Data records: 0 Deleted blocks: 0
….
MyISAM-table 'Employee' is corrupted
Fix it using switch "-r" or "-o"”

Data stored in Employee table becomes inaccessible after the above error message appears. Furthermore, the above error message pops up every time you attempt to access Employee table.

Cause:

The root cause for the occurrence of the above error message is table corruption due to power outage.

Resolution:

For complete troubleshooting of the above error message and to access the Employee table records, you will need to repair the table using the underneath command:

Repair Table Employee

In most cases, the above command resolves the corruption in Employee table and provides access to the data stored in it. However, if the above command falls short to repair, then you will need to search for powerful third-party MySQL Repair application. These MySQL Recovery utilities employ high-end scanning and repairing algorithms to repair corrupted tables and restore them on default or new destination. With to-the-point user documentation, non destructive nature, and user-friendly interface, these tools ensure fast, easy and complete database repair.

Wednesday, November 18, 2009

MySQL table Repairing process Halts

A severely corrupted MySQL database table is always difficult to repair. Corruption in table not only stops the database to mount, but also makes the records saved in the table inaccessible. Few major causes for severe corruption of MySQL database tables are improper system shutdown, software bugs, and human errors. To surpass the effects of table corruption, restoration from a complete and valid database backup always helps. But, the possibilities for backup being corrupted or damaged always exist. In such situations, an ideal way to access your data is by using an advanced third-party MySQL Database Repair application.

Consider a practical scenario, where you run a query to display the contents saved in a particular table and you encounter an error message stating that the table has been severely corrupted. To repair your corrupted table, you run the below command.

Repair Table Tablename

The above command ran for approximately 15 hours and didn't stopped until you forcefully stopped the never-ending process. Furthermore, while the repairing process was in progress, it occupied all your disk space. The below messages displayed during the repairing process:

-rw-r----- 1 mysql mysql 8.9G May 15 19:52 post.MYD
-rw-r----- 1 mysql mysql 7.8G May 17 18:19 post.MYI
-rw-r----- 1 root root 214M May 17 18:19 post.TMD
-rw-r----- 1 mysql mysql 9.0K Dec 6 11:49 post.frm

The above message indicate that the table from which you want to execute the data is beyond repair of above command. To access your inaccessible records in such situations, you can restore the data from an updated backup. However, in case of no backup availability, only an advanced MySQL Database Repair tool can help.

Such MySQL Recovery tools use high end procedures to repair your corrupted tables and restore them on default or new user-specified location. The database repair software come with highly interactive user-documentation, which guides you through a complete repair process. The non-destructive nature of the software ensures risk-free recovery of recovered data by leaving the original database file untouched and unmodified.

Friday, November 6, 2009

Prevention tips for MySQL database corruption

A corrupted MySQL database is a database in which some of the records are lost and you are not able to perform any functions. While the causes for MySQL database corruption might vary, the result in most cases remains the same – unmountable MySQL database. The best and easiest way to avoid corruption is by following some prevention tips. But, if in case, the database corrupts even after following the prevention tips, then the only to access MySQL database records is by restoring the data from an updated backup. However, if no backup is available or backup falls short to restore the required data, then you will need to opt for an effective MySQL Repair tool.

MySQL database corruption could be a result of numerous factors, to include:

Using “killall -9 mysqld” command to shutdown the server and killing all the ongoing MySQL processes.
Improper shutdown of the MySQL database server due to power outage.
Fiddling with the data files, especially under the feet of mysqld
Internal error in MySQL database server
Kernel Panic
Virus Attack

Prevention Tips:

Always test the kernel with mysqld.
Always have a branded UPS to resume all your operations when you encounter a power outage.
In case of slightest of doubt of MySQL database corruption, run the below commands:
CHECK TABLE tablename
REPAIR TABLE tablename
Always maintain an updated backup. It is advisable to create database backup at least once in a week.
Always have a powerful anti-virus software installed in your system.

The above prevention tips allow you to save your data from most of the corruption scenarios. However, if these prevention fail to save your MySQL database from corruption, and you have not created any backup, then you will need to opt for advanced MySQL Recovery software. Such MySQL Repair applications employ intensive scanning techniques to scan and repair corrupted MySQL database. The easy-to-understand graphical user documentation of the software makes it usable to both technical and non-technical users.

Tuesday, November 3, 2009

Resolving “Checking for corrupt, not cleanly...” Error Message in MySQL database

One of the major reasons for corruption of MySQL database tables is improper or unexpected shutdown of MySQL Server. An improper shutdown can occur due to power outage or human errors. In most of these situations, you encounter an error message that makes the data stored in your MySQL tables inaccessible. To access the data stored in the tables, a perfect and easy way is to restore the data from an updated backup. But if in case, the data backup itself gets corrupted or is unable to restore the required data, then you will need to use advanced MySQL Repair application that can repair the corrupted database and recover inaccessible tables.

Consider a practical example, where you encounter the below error message when you attempt to mount your MySQL database after improper server shutdown:

“Checking for corrupt, not cleanly closed and upgrade needing tables.”

The above error message appears each time you attempt to access the records saved in the MySQL database tables. Furthermore, the error message makes the data stored in the tables inaccessible.

Cause:

The root cause for the occurrence of the above error message is corruption of MySQL database due to improper system shutdown.

Resolution:

To resolve the above error and access the records, you will need to follow the below measures:

Check for the extent of table corruption using the below command:
CHECK TABLE

After checking the extent of corruption, run the below command to repair the tables:

REPAIR TABLE

The above resolution works in most situations and makes the records accessible. But, if in case the resolution fails to resolve the issue and you encounter the above error message again, then you will need to use advance MySQL Recovery software. These MySQL Repair tools use effective algorithms to orderly repair the corrupted tables. Built with highly interactive user-interface, the tool is easily understood by both technical and non-technical users. These non-destructive database repair utilities perform safe repair of database by not modifying the original database.

Monday, November 2, 2009

Repairing corrupt MySQL tables

MySQL table corruption can be easily identified. Few symptoms that allow you to identify table corruption are – queries stop fetching records, display of an error message, and display of incorrect records. The above symptoms primarily results in inaccessibility of records stored in MySQL tables. In such situations, a complete database backup allows you to overcome the problem by restoring all the required data. However, there is a possibility that the data backup is corrupted or does not restore the required information. For absolute repair of corrupted tables under such situations, you will need to opt for advanced MySQL Repair software.

Consider a practical example, where you encounter the below error message when you attempt to access the records saved in Employee table:

“Unexpected end of File”

The above error message makes the data stored in the Employee database records inaccessible. In addition, the same error message re-appears each time you attempt to access the records saved in the Employee table.

Cause:

The root cause for the occurrence of the above error message is the corruption of Employee table. Few main reasons for table corruption can be unexpected system shut down, improper locking of tables, header corruption, virus attack, and human errors.

Resolution:

To resolve the above error and access the records saved in Employee table, you will need to follow the below measures:

Check the Employee table for the extent of corruption using the below command:
CHECK TABLE Employee

If the above command reports corruption, then you will need to repair the table by using the below command:

REPAIR TABLE Employee

In most cases, table corruption gets resolved by using the above command. However, if the problem persists and the same error message appears again while accessing the records, then you will need to use advanced MySQL Database Repair software. Such read only MySQL Recovery utilities employ powerful procedures to to systematically scan and repair the corrupted tables. These repair tools are built with highly interactive user-interface and can be used by both technical and non-technical users.

Monday, October 26, 2009

Resolving Error Codes 126, 127, 144, and 145 in MySQL database

Sometimes, when you attempt to access the records saved in MySQL database table, there is a possibility of getting an error message. The error message primarily occurs due to MySQL database corruption. Few main causes of MySQL database corruption are server crash, MySQL bug, damaged table handler, and many more similar reasons. In such situation, the records stored in your MySQL database components become inaccessible. For complete access of records in such scenarios, an ideal way is to restore the data from an updated and valid backup. However, if no backup is available or backup falls short to restore the correct records, then you will need to opt for advanced third party MySQL Repair application.

Consider a practical scenario, where you attempt to mount your MySQL database (Employee) and receive any of the below error messages:

“Got error 126 from table handler”
Or
“Got error 127 from table handler”
Or
“Got error 144 from table handler”
Or
“Got error 145 from table handler”

Data stored in the Employee database becomes inaccessible after any of the above error message appears. In addition, the same error messages appear each time you attempt to mount your Employee database.

Cause:

The root cause for the occurrence of the above error message is corruption of Employee database after damage in table handler.
Resolution:

To resolve the above error message and access the records stored in the Employee database, you will need to run the below command to analyze the below command to check the extent of Employee database corruption:

“Check Table tablename”

After analyzing the extent of Access database corruption, you will need to use the below repair command:

“Repair Table tablename”

In most cases, the above resolution resolves your issue and the database becomes inaccessible. However, if the database remains inaccessible and you still encounter the above error message, then you will need to use advanced MySQL Database Recovery software. These MySQL Recovery utilities provide secure, comprehensive, and fast database repair by maintaining the intactness of data.

Stellar Phoenix Database Recovery For MySQL is a effective MySQL Database Recovery tool to repair corrupt MySQL database created in both MySQL database storage engines – MyISAM and InnoDB. Designed for Windows Vista, XP, 2003 and 2000, the read only software safely recovers almost all MySQL components including tables, primary key(s), and relations.

Tuesday, October 20, 2009

Resolving Error 29 in MySQL Database

Mysqldump is a backup program that allows you to dump MySQL database(s) or transfer the records to another SQL Server. The dump contains SQL statements that can either populate the table or create the table. While the backup program creates backup in most cases, the program gets halted when your database gets corrupted or damaged. In most of these situations, you encounter an error message that does not allow you to create a backup. To overcome these situations, you will need to use an advanced MySQL Repair tool to repair the corrupted or damaged MySQL database.

Consider a practical scenario, where you try and do a mysqldump, and encounter the below error message:

[root@www diaendomet]# mysqldump -ucojjohealth -p --all-databases >
alldatabases.sql
Enter password:
mysqldump: Got error: 29: File '../diaendomet/users.MYD' not found
(Errcode: 2) when using LOCK TABLES

The same error message appears each time you attempt to run mysqldump. In addition, the mysqldump halts every time it encounters the above error.

Cause:

The fundamental cause for the occurrence of the above error message is corruption of MySQL database. Few main reasons for MySQL database corruption are improper system shutdown, virus attack, and application malfunction.

Resolution:

To resolve the above error message, you will need to run the below command:

“mysqlcheck --all-databases --auto-repair -ucojjohealth -p”

While the above command repairs corrupted databases in most cases, there is a possibility of getting a new error message after this command:

“error: File '../diaendomet/users.MYD' not found (Errcode: 2)”

If you encounter the above error message, then your database has been corrupted badly. To repair your database in such situations, you will need to use third-party MySQL Database Recovery tools. MySQL Recovery utilities provide advanced, complete, and risk-free database repair applications that repair damaged MySQL database while maintaining the intactness of data. These tools employ high-end scanning mechanisms to comprehensively repair the corrupted MySQL databases. With to-the-point documentation, the tools serve as self-explanatory and repair-centric tools.

Monday, October 12, 2009

How to Resolve “Record-file is crashed” Error in MySQL

MySQL database is made up of several tables, which store data in the form of rows and columns. A MySQL database table is the collection of several interrelated data records. The MySQL database tables are identified with different and unique names. You can easily and quickly identify table corruption when they produce incorrect result or retrieve irrelevant data. MySQL database corruption generally caused by improper system shutdown or application shutdown, application bug in MyISAM or MySQL code, user of third party application (such as myisamchk) on like table, virus infection, faulty memory and so forth. In these critical situations, if you do not have complete backup of your database, you are required to go for effective MySQL Database Recovery using advanced tools.

In a practical scenario, where you use the Select statement to show all records of the Employee table. For this purpose you write below command:

Select * from employee;

When you execute this MySQL command, you come across below given error message and you does not get any record as output:

“Record-file is crashed”

The same problem might occur with any of the database table. Above error message indicates that the database table is damaged. Furthermore, you come across same error message and face same behavior every time when you run Select statement on MySQL table. Subsequent to the above error, all of the data stored in particular database table become inaccessible and you come across data loss situations. At this point, you are required to find out the cause of this problem and go for MySQL Recovery by resolving it.

Solution

In order to work around this issue and gain access of your mission critical data, first of all check the database table for corruption and integrity using underwritten command:

CHECK TABLE ;

After completion of this process, repair damaged database table using following command:
REPAIR TABLE
;
However, when the repair command can not fix the above issue, data may still remain inaccessible and you face same problem. In such cases, you should go for third party SQL Database Recovery software for assured and complete recovery.

These tools use high-end scanning techniques for in-depth scanning of affected database and retrieve all of its objects. These MySQL Repair applications have self-descriptive and interactive graphical user interface to offer ease of use. Due to read-only and non-destructive conduct, these tools are completely safe to use.

Wednesday, October 7, 2009

Resolving “Database page corruption” Error in MySQL

MySQL database uses two storage engines- InnoDB and ISAM. InnoDB is the standard element of all current MySQL libraries. It supports several feature, which make it better than other storage engines. The features include foreign key support and storing data in primary key order. The InnoDB also features ACID properties- compliant transaction support, which allows it to recover from unforeseen crashes. In some situations, the InnoDB database may corrupt if you kill Mysqlid process, virus infection, improper system shutdown, application malfunction and many others. In such cases, you need to restore your database from most recent backup. If the backup is not available or up to date, you will require MySQL Recovery solutions to retrieve data from damaged database.

In a practical scenario, you might come across below error message while trying to access data from an InnoDB database:

“Database page corruption on disk or a failed file read”

When this error message occurs, the MySQL application and database crashes down and renders all your critical data inaccessible. In order to gain access of your valuable data in such situations, you need to find out the cause of this behavior and go for MySQL Recovery by resolving it.

Root of the problem

As stated in the above error message, this problem occur due to corruption to the database pages or entire database. When database corruption occurs, MySQL can not read information from database and returns the error. However, other reasons of above problem can be improperly configured or damaged libraries.

Resolution

To sort out above problem, go through underwritten steps:

Check that all the linked libraries are correct and properly configured.
If the MySQL database is corrupted, use following steps to recover:
Analyze MySQL table corruption by this command:
Check Table tablename
Run following command to repair the damaged table:
Repair Table tablename
If the error message still occurs, repair and restore the damaged database using MySQL Repair software.

These are effective applications, which let you carry out absolute MySQL Database Recovery in most of the corruption scenarios. They are completely easy to use as they have interactive and simple graphical user interface. The software do not alter original contents of the database due to read-only behavior.

Stellar Phoenix Database Recovery for MySQL is a powerful utility to handle all types of MySQL database corruption issues. It supports recovery from MySQL 5.x and 4.x. The software is compatible with Microsoft Windows Vista, 2003, XP and 2000 and all major Linux distributions.