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MySQL 1195: Table is corrupted.

  1. Immediately stop any further write operations to the affected table to prevent further corruption.



  1. Take a backup of the affected table and the entire database, if possible, using the `mysqldump` command:


mysqldump -u username -p databasename > backupdatabase_name.sql
mysqldump -u username -p database
name tablename > backuptablename.sql

  1. Check the integrity of the table using the `CHECK TABLE` command:


CHECK TABLE table_name;

  1. Attempt to repair the table using the `REPAIR TABLE` command:


REPAIR TABLE table_name;

  1. If the `REPAIR TABLE` command does not fix the issue, and the table uses the MyISAM storage engine, use the `myisamchk` utility:


myisamchk --recover /path/to/data/dir/table_name.MYI
Note: Replace `/path/to/data/dir/` with the actual path to your MySQL data directory.

  1. If the table uses the InnoDB storage engine and cannot be repaired using `REPAIR TABLE`, you may need to restore the table from a backup. Before doing so, you can try to force InnoDB recovery by editing the `my.cnf` or `my.ini` file under the `[mysqld]` section:


innodbforcerecovery = 1
Note: Start with `1` and gradually increase to `6`. Be cautious as higher levels can cause permanent data loss. After setting this, restart the MySQL server.

  1. After recovery efforts, verify the integrity of the table again using the `CHECK TABLE` command.



  1. Finally, monitor MySQL logs for any errors or warnings that could indicate underlying problems that led to the corruption:


tail -f /var/log/mysql/error.log
Note: Adjust the log file path based on your MySQL configuration.

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