How do I reduce InnoDB file size?

How do I reduce InnoDB file size?

Decreasing the Size of the InnoDB System Tablespace

  1. Use mysqldump to dump all of your InnoDB tables, including InnoDB tables located in the mysql schema.
  2. Stop the server.
  3. Remove all of the existing tablespace files ( *.
  4. Remove any .
  5. Configure the data files for the new system tablespace.
  6. Restart the server.

How do you reduce the size of ibdata1?

How to Shrink MySQL ibdata1 Size using innodb_file_per_table

  1. Big MySQL (and MariaDB) System Tablespace.
  2. Set the innodb_file_per_table parameter.
  3. New Tables (and index) as individual files.
  4. Extract existing tables from ibdata1.
  5. Shrink ibdata1 File Size.
  6. Backup the Database.
  7. Drop all your database.
  8. Delete ibdata and ib_logfile.

How do you fix ibdata1?


  1. In mysqld section of my. cnf add a line innodb_force_recovery = 4 and then restart MySQL server using /etc/init. d/mysql restart .
  2. Take backup.
  3. Restore it on other server and verify the contents.
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Why is the ibdata1 file continuously growing in MySQL?

When the ibdata1 file is growing too fast within MySQL it is usually caused by a long-running transaction that we have forgotten about. Our MySQL Monitoring Plugins includes a Nagios script that can alert you if it finds a too old running transaction.

Is it safe to delete ibdata1?

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.

Can I delete ibtmp1?

In mysql 5.7 and higher all you need to do to reclaim the space used by the ibtmp1 file is restart the service. You do not have to set GLOBAL innodb_fast_shutdown = 0; or manually delete the file.

How recover InnoDB mysql table data from Ibdata and FRM files?

Copy the Files To restore the data from the above files, first stop the MySQL server. Copy the ibdata files, and the database schema folder to some other directory. We will use this to restore our Mysql database. In this case, we’ll copy it to the /tmp directory.

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How do you clean up ibdata1?

As you want to reclaim the space from ibdata1 you actually have to delete the file:

  1. Do a mysqldump of all databases, procedures, triggers etc except the mysql and performance_schema databases.
  2. Drop all databases except the above 2 databases.
  3. Stop mysql.
  4. Delete ibdata1 and ib_log files.
  5. Start mysql.
  6. Restore from dump.

Can I remove IBD file?

To remove the new IBD file, execute the following sql command: ALTER TABLE mytable DISCARD TABLESPACE; This command removes the link between the table and the table space, and removes the IBD file.

What happens if I delete ibdata1?

Can I delete ibdata1?

The ibdata1 file can be shrinked if you delete all databases, remove the files and reload the mysqldump. We can configure MySQL so that each table, including its indexes, is stored as a separate file. It is enabled by default as of version 5.6.