How to optimize and repair MySQL or MariaDB Database with mysqlcheck

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MySQL check is a tool installed with MySQL database servers, enabling the analysis, optimization, and repair of common errors in MySQL databases and tables. Users utilize the mysqlcheck command to troubleshoot such issues by checking, analyzing, and optimizing all tables in a database or repairing a specific one. This command can also be used with…

This article explains optimizing and repairing MySQL or MariaDB databases using the MySQL Check tool.

MySQL check is a tool that gets installed along with installing MySQL database servers. It’s there to help analyze and fix common errors and optimize MySQL databases and tables.

The question is, how does one use the mysqlcheck command?

This brief post shows you how to use mysqlcheck to optimize, repair, and fix common problems with MySQL databases.

Sometimes, MySQL databases get corrupt or don’t function as efficiently as they should. These are just some of the problems you may find yourself trying to fix. In these situations, your first go-to tool should be mysqlcheck.

This tool comes with a MySQL database client. It helps database administrators analyze, optimize, and repair common issues in managing MySQL or MariaDB databases and tables.

Check all tables in a particular database

mysqlcheck -c database_name

If your database server has a password, use the command below.

mysqlcheck -c databse_name -u username -p

Analyze all tables in a particular database

mysqlcheck -a database-name

If your database server has a password, run the commands below

mysqlcheck -a database_name -u username -p

Optimize all databases

mysqlcheck -o --all-databases

Again, run the commands below if you set up a password on your database server.

mysqlcheck -o --all-databases -u username -p

Repair a particular database

mysqlcheck -r database_name

With the password on the database server, run the commands below

mysqlcheck -r database_name -u username -p

Optimize and Repair MySQL databases

mysqlcheck --auto-repair -o --all-databases

With username and password, run the commands below

mysqlcheck --auto-repair -o --all-databases -u username -p

A table to help you:

-c, –checkCheck the table for errors.
-a, –analyzeAnalyze the given tables.
-o –optimizeOptimize the tables.
-r, –repairPerform a repair that can fix almost anything except unique keys that are not unique.
–auto-repairIf a checked table is corrupted, automatically fix it. Repairing will be done after all tables have been checked.
-A, –all-databasesCheck all the databases. This is the same as –databases with all databases selected.
-B, –databasesProcess all tables in the named databases. This option considers all name arguments as database names, not table names.
–tablesOverrides the –databases or -B option such that all name arguments following the option are regarded as table names.
-g, –check-upgradeCheck tables for version-dependent changes. It may be used with –auto-repair to correct tables requiring version-dependent updates.

That should do it!

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