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How to recover
Posted by: nicolas penel
Date: January 26, 2016 08:07AM

Hello,

My mysql engine on xampp installation on windows machine doesn't start.

Here is the message found in the log file.

Any idea how to recover ?

2016-01-26 14:57:47 212 [Note] InnoDB: The log sequence numbers 170475919 and 170475919 in ibdata files do not match the log sequence number 180194948 in the ib_logfiles!
2016-01-26 14:57:47 212 [Note] InnoDB: Database was not shutdown normally!
2016-01-26 14:57:47 212 [Note] InnoDB: Starting crash recovery.
2016-01-26 14:57:47 212 [Note] InnoDB: Reading tablespace information from the .ibd files...
2016-01-26 14:57:47 212 [ERROR] InnoDB: Attempted to open a previously opened tablespace. Previous tablespace osclass/oc_t_user uses space ID: 27 at filepath: .\osclass\oc_t_user.ibd. Cannot open tablespace phpmyadmin/pma__central_columns which uses space ID: 27 at filepath: .\phpmyadmin\pma__central_columns.ibd
InnoDB: Error: could not open single-table tablespace file .\phpmyadmin\pma__central_columns.ibd
InnoDB: We do not continue the crash recovery, because the table may become
InnoDB: corrupt if we cannot apply the log records in the InnoDB log to it.
InnoDB: To fix the problem and start mysqld:
InnoDB: 1) If there is a permission problem in the file and mysqld cannot
InnoDB: open the file, you should modify the permissions.
InnoDB: 2) If the table is not needed, or you can restore it from a backup,
InnoDB: then you can remove the .ibd file, and InnoDB will do a normal
InnoDB: crash recovery and ignore that table.
InnoDB: 3) If the file system or the disk is broken, and you cannot remove
InnoDB: the .ibd file, you can set innodb_force_recovery > 0 in my.cnf
InnoDB: and force InnoDB to continue crash recovery here.

Thank you for any help

Regards

NP

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