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What causes a crashed InnoDB table in MySQL?
Force shutdown of MySQL service can end up in Innodb crash. Space issue on the serve can case Innodb crash, if the server space is 100% filled and mysql not able to write on the disk. High load on the server can cause Innodb crash. High I/O wait on the disk can also cause MySQL innodb crash.
How to restart MySQL during InnoDB rollback?
REDO process, however, can and is done in the background. What you can do is kill mysql (again) and restart it skipping that step: /etc/init.d/mysqld start –innodb_force_recovery = 3
Why is there a crash recovery log on InnoDB?
This log just indicates that you didn’t shut down correctly, so upon startup, InnoDB had to do a “crash recovery”. It’s not the crash recovery that would have lost data — it’s your operating system or hardware. Crash recovery is designed actually to avoid losing data due to crashes (that’s its entire purpose).
Why is MySQL InnoDB flush log at TRX dangerous?
If you are running with innodb_flush_log_at_trx_commit set to anything other than 1, this is your fault as this is a dangerous setting. If you are running it with 1, this would imply that InnoDB is requesting data to be written to disk and confirmed, but the system is lying to InnoDB about writing it, causing corruption later.
Is there any way to repair an InnoDB table?
If you find any difficulty while manually repairing InnoDB tables of MySQL database or any of the database components appears missing, you can try MySQL repair software to repair and restore corrupt InnoDB tables. Recovers all the database objects including tables, keys, data types, table properties, triggers, views, etc.
Is it possible to repair an InnoDB crash?
InnoDB crash is a serious problem which is very rare but if occurred than it can result in devastating problems. One could lose their data almost completely. It is very difficult to repair InnoDB Tables, thus one should always keep a backup of all the files.
How to check for page corruption in InnoDB table?
If the Server is running, use CHECK TABLE command to find errors in InnoDB table. If the Server is offline or has crashed, use Innochecksum to check for page corruption errors on an InnoDB table.