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I am using LINUX and I have mistakenly deleted ibdata1 file in mysql folder.
I restarted the 'mysqld' service and Now when I am trying to read data from the databases it is not able to find out older tables.
Am I in a big trouble? Please throw some light on this if any idea.
Thanks for your time.
Thanks and Regards, SachinJadhav.
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Save this answer. Show activity on this post. ibdata1 contains InnoDB dictionary which is vitally important for InnoDB. If you delete it any access to a table will fail with Table doesn't exist error.
Forcing InnoDB recovery may help you dump and export the affected databases. You can then drop the databases and restart the server, which will recreate the ibdata1 file. Next, import the databases from the dump file back into your MySQL server and restore the database.
The file ibdata1 is the system tablespace for the InnoDB infrastructure. It contains several classes for information vital for InnoDB. Table Data Pages. Table Index Pages. Data Dictionary.
You must not delete an . ibd file if you want to avoid data loss or downtime. These . ibd files contain your data and indexes.
You are in big trouble...
By default ibdata1 contains all the table's data (and therefore is lost). Even if you configure it to use a separate file per table, all internal MySQL's data is stored in that file, and as far as I know, there is no way to restore it.
Really hope you have a backup....
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Unless you defined innodb_file_per_table, this is a single tablespace that along with the transaction logs (stored in ib_logfile*) keep your table data.
Deleting it will effictively delete all data stored in the InnoDB tables.
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