Contents
What are IBD files in MySQL?
An IBD file is a MySQL table created by the InnoDB database engine. It contains a table-specific tablespace and index data. IBD files are created when MySQL’s innodb_file_per_table option is enabled, which it is by default. MySQL is a popular open-source database management system.
Can I delete .IBD file?
2 Answers. 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. if innodb_file_per_table is enabled then the tables can be restored via this and this.
How big is the ibdata1 file in MySQL?
As you may have noticed in your MySQL’s data directory (in Debian/Ubuntu – /var/lib/mysql) lies a file called ‘ibdata1′. It holds almost all the InnoDB data (it’s not a transaction log) of the MySQL instance and could get quite big. By default this file has a initial size of 10Mb and it automatically extends.
How to reclaim space from ibdata1 in MySQL?
As you want to reclaim the space from ibdata1 you actually have to delete the file: When you start MySQL in step 5 the ibdata1 and ib_log files will be recreated. Now you’re fit to go. When you create a new database for analysis, the tables will be located in separate ibd* files, not in ibdata1.
How to shrink and purge ibdata1 file in MySQL?
When you create a new database for analysis, the tables will be located in separate ibd* files, not in ibdata1. As you usually drop the database soon after, the ibd* files will be deleted. By using the command ALTER TABLE ENGINE=innodb or OPTIMIZE TABLE one can extract data and index pages from ibdata1 to separate files.
Is the.ibd file in Ubuntu too big?
Be warned that the table is locked during the duration of this command which can be a lengthy process. It appears that *.ibd files (like the file ibdata1) by default never shrink, they can only grow. They are created if you have configuration set (which is the default on ubuntu).