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Can I delete Ibdata?
The ibdata1 file can’t actually be shrunk unless you delete all databases, remove the files and reload a dump. But you can configure MySQL so that each table, including its indexes, is stored as a separate file. In that way ibdata1 will not grow as large.
What is Ibdata file in MySQL?
The single ibdata1 file contains all the tables and indexes in your MySQL database. So, if you have a big database, this file size will grow really big. In this tutorial, we’ll explain how to rebuild your entire MySQL database, and break the big MySQL system tablespace file into small individual MySQL table files.
How to stop the ibdata1 file in MySQL?
The only way is to start the database with fresh ibdata1. To do that you would need to take a full logical backup with mysqldump. Then stop MySQL and remove all the databases, ib_logfile* and ibdata* files.
How does ibdata1 increase the size of a file?
Using autoextend (probably the most common size setting) ibdata1 preallocates storage, growing each time it is nearly full. That makes writes faster as space is already allocated. When you delete data it doesn’t shrink but the space inside the file is marked as unused.
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 there a way to shrink an IBD file?
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. However, ibdata1 will not shrink unless you do the steps above.