Documentation Home
MySQL 8.0 Reference Manual
Related Documentation Download this Manual
PDF (US Ltr) - 38.1Mb
PDF (A4) - 38.1Mb
PDF (RPM) - 33.0Mb
HTML Download (TGZ) - 8.1Mb
HTML Download (Zip) - 8.1Mb
HTML Download (RPM) - 7.0Mb
Man Pages (TGZ) - 132.7Kb
Man Pages (Zip) - 189.0Kb
Info (Gzip) - 3.4Mb
Info (Zip) - 3.4Mb
Excerpts from this Manual

15.4.5 System Tablespace

The InnoDB system tablespace contains the InnoDB data dictionary (metadata for InnoDB-related objects) and is the storage area for the doublewrite buffer, the change buffer, and undo logs. The system tablespace also contains table and index data for any user-created tables that are created in the system tablespace. The system tablespace is considered a shared tablespace since it is shared by multiple tables.

The system tablespace is represented by one or more data files. By default, one system data file, named ibdata1, is created in the MySQL data directory. The size and number of system data files is controlled by the innodb_data_file_path startup option.

For related information, see Section 15.6.1, “InnoDB Startup Configuration”, and Section 15.7.1, “Resizing the InnoDB System Tablespace”.


User Comments
User comments in this section are, as the name implies, provided by MySQL users. The MySQL documentation team is not responsible for, nor do they endorse, any of the information provided here.
Sign Up Login You must be logged in to post a comment.