Error
Error Code:
1459
MySQL Error 1459: Table Upgrade Required
Description
MySQL Error 1459 indicates that a table's format or metadata is outdated and incompatible with the current MySQL server version. This typically occurs after a MySQL server upgrade or migration when older tables have not been properly converted or updated to the new format.
Error Message
Table upgrade required. Please do REPAIR TABLE `%s` or dump/reload to fix it!
Known Causes
4 known causesMySQL Server Version Mismatch
The database server has been upgraded to a newer version, and some tables were created or last modified with an older, incompatible format.
Data Directory Migration
Moving MySQL data files (e.g., .frm files) from one server or installation to another without ensuring format compatibility for all tables.
Incomplete Upgrade Process
An attempted MySQL server upgrade or migration process was not fully completed, leaving some tables in an outdated or inconsistent state.
Corrupted Table Metadata
The internal metadata for a specific table might have become corrupted, making it appear incompatible with the server.
Solutions
3 solutions available1. Immediate Repair with REPAIR TABLE easy
Quickly attempts to fix table corruption using MySQL's built-in repair utility.
1
Connect to your MySQL server using the MySQL client.
2
Execute the `REPAIR TABLE` command for the affected table. Replace `%s` with the actual table name.
REPAIR TABLE your_table_name;3
If the error persists, try `REPAIR TABLE your_table_name USE_FRM;` which attempts to rebuild the table from its .frm file.
REPAIR TABLE your_table_name USE_FRM;2. Dump and Reload Data medium
A more thorough solution involving exporting and re-importing the table's data.
1
Identify the affected table name. This is usually indicated by `%s` in the error message.
2
Dump the table's structure and data using `mysqldump`. This creates a SQL file.
mysqldump -u your_username -p your_database_name your_table_name > table_dump.sql3
After creating the dump, drop the corrupted table from your database.
DROP TABLE your_table_name;4
Re-import the table structure and data from the SQL dump file.
mysql -u your_username -p your_database_name < table_dump.sql3. Upgrade Table Format Manually medium
Forces an upgrade of the table's format to the latest version.
1
Connect to your MySQL server.
2
Execute an `ALTER TABLE` statement that effectively rewrites the table, forcing an upgrade. Replace `%s` with the actual table name.
ALTER TABLE your_table_name ENGINE=InnoDB;3
If the table uses a different engine, specify that engine. For example, for MyISAM: `ALTER TABLE your_table_name ENGINE=MyISAM;`
ALTER TABLE your_table_name ENGINE=MyISAM;4
For some older table formats, you might need to explicitly change the `ROW_FORMAT` or other attributes to trigger an upgrade. Consult MySQL documentation for specific cases.