restore table from .frm and .ibd file?
InnoDB tables cannot be copied the same way that MyISAM tables can.
Just copying the .frm and .ibd files from one location to another is asking for trouble. Copying the .frm and .ibd file of an InnoDB table is only good if and only if you can guarantee that the tablespace id of the .ibd file matches exactly with the tablespace id entry in the metdata of the ibdata1 file.
I wrote two posts in DBA StackExchange about this tablespace id concept
- Table compression in InnoDB? (under the heading 'Restoring Databases')
- How to Recover an InnoDB table whose files were moved around
Here is excellent link on how to reattach any .ibd file to ibdata1 in the event of mismatched tablespace ids : http://www.chriscalender.com/?tag=innodb-error-tablespace-id-in-file. After reading this, you should come to the immediate realization that copying .ibd files is just plain crazy.
You could apply the suggestions from the Chris Calendar link, or you could go back to the old installation of mysql, startup up mysql, and then mysqldump the ddms database. Then, import that mysqldump into your new mysql instance. Trust me, this would be far easier.
I recently experienced this same issue. Here are the steps I used to solve it without having to mess around with the tablespace id as RolandoMySQLDBA mentions above. I'm on a Mac and so I used MAMP in order to restore the Database to a point where I could export it in a MySQL dump.
You can read the full blog post about it here: http://www.quora.com/Jordan-Ryan/Web-Dev/How-to-Recover-innoDB-MySQL-files-using-MAMP-on-a-Mac
You must have:
-ibdata1
-ib_logfile0
-ib_logfile1
-.FRM files from your mysql_database folder
-Fresh installation of MAMP / MAMP Pro that you are willing to destroy (if need be)
- SSH into your web server (dev, production, no difference) and browse to your mysql folder (mine was at /var/lib/mysql for a Plesk installation on Linux)
- Compress the mysql folder
- Download an archive of mysql folder which should contain all mySQL databases, whether MyISAM or innoDB (you can scp this file, or move this to a downloadable directory, if need be)
- Install MAMP (Mac, Apache, MySQL, PHP)
- Browse to /Applications/MAMP/db/mysql/
- Backup /Applications/MAMP/db/mysql to a zip archive (just in case)
Copy in all folders and files included in the archive of the mysql folder from the production server (mt Plesk environment in my case) EXCEPT DO NOT OVERWRITE:
-/Applications/MAMP/db/mysql/mysql/
-/Applications/MAMP/db/mysql/mysql_upgrade_info
-/Applications/MAMP/db/mysql/performance_schema
And voila, you now should be able to access the databases from phpMyAdmin, what a relief!
But we're not done, you now need to perform a mysqldump in order to restore these files to your production environment, and the phpmyadmin interface times out for large databases. Follow the steps here:
http://nickhardeman.com/308/export-import-large-database-using-mamp-with-terminal/
Copied below for reference. Note that on a default MAMP installation, the password is "root".
How to run mysqldump for MAMP using Terminal
EXPORT DATABASE FROM MAMP[1]
Step One: Open a new terminal window
Step Two: Navigate to the MAMP install by entering the following line in terminal cd /applications/MAMP/library/bin Hit the enter key
Step Three: Write the dump command ./mysqldump -u [USERNAME] -p [DATA_BASENAME] > [PATH_TO_FILE] Hit the enter key
Example:
./mysqldump -u root -p wp_database > /Applications/MAMP/htdocs/symposium10_wp/wp_db_onezero.sql
Quick tip: to navigate to a folder quickly you can drag the folder into the terminal window and it will write the location of the folder. It was a great day when someone showed me this.
Step Four: This line of text should appear after you hit enter Enter password: So guess what, type your password, keep in mind that the letters will not appear, but they are there Hit the enter key
Step Five: Check the location of where you stored your file, if it is there, SUCCESS Now you can import the database, which will be outlined next.
Now that you have an export of your mysql database you can import it on the production environment.
I have recovered my MySQL 5.5 *.ibd and *.frm files with using MySQL Utilites and MariaDB 10.
1) Generating Create SQLs.
You can get your create sql's from frm file. You must use : https://downloads.mysql.com/archives/utilities/
shell> mysqlfrm --server=root:pass@localhost:3306 c:\MY\t1.frm --port=3310
Other way you may have your create sql's.
2) Create Your Tables
Create your tables on the database.
3) alter table xxx discard tablespace
Discard your tables which do you want to replace your *.ibd files.
4) Copy your *.ibd files (MySQL Or MariaDB) to MariaDB's data path
First i try to use MySQL 5.5 and 5.6 to restrore, but database crashes and immediately stops about tablespace id broken error. (ERROR 1030 (HY000): Got error -1 from storage engine)
After i have used MariaDB 10.1.8, and i have succesfully recovered my data.
5) alter table xxx import tablespace
When you run this statement, MariaDB warns about file but its not important than to recover your data :) Database still continues and you can see your data.
I hope this information will be helpful for you.