MySQL 1239: Partition needs repair.

  1. Immediately stop writing to the affected partition to prevent data corruption.



  1. Backup your database if possible:


mysqldump -u username -p database_name > backup.sql

  1. Check the integrity of the partition and table with the CHECK TABLE command:


CHECK TABLE yourtablename;

  1. Attempt to repair the partition with the REPAIR TABLE command:


REPAIR TABLE yourtablename;

  1. If the partition is part of a larger table, consider running an OPTIMIZE TABLE command to reorganize the table and update index statistics:


OPTIMIZE TABLE yourtablename;

6. After repair, validate the table's integrity again with CHECK TABLE.

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