![]() Mysqlcheck uses the SQL statements CHECK TABLE, REPAIR TABLE, ANALYZE TABLE, and OPTIMIZE TABLE in a convenient way for the user. Theīenefit of using mysqlcheck is that you do not have to stop the server to perform table maintenance. The main operational difference is that mysqlcheck must be used when the mysqld server is running, whereas myisamchk should be used when it is not. Mysqlcheck is similar in function to myisamchk, but works differently. (This is also true for mysql_upgradeīecause that program invokes mysqlcheck to check all tables and repair them if necessary.) ![]() ![]() If you use the -databases or -all-databases option to process all tables in one or more databases, an invocation of mysqlcheck might take a long time. 1045 Access denied for user ‘root’’localhost’ (using password: YES) 1045 Access denied for user ‘root’’localhost’ (using password: NO) If you are a PHP developer and ever came across this scenario where you accidentally or for any reason deleted the root user or changed root’s password then you might get something. If you don't have one, create one using ssh-keygen (stick to the default. In /etc/ssh/sshdconfig, if the following line exists, possibly commented out (with a in front): Then change it to the following, uncommenting if needed (remove the in front): Or, you can use SSH keys. Table maintenance operations can be time-consuming, By default, the SSH server denies password-based login for root. ![]() The mysqlcheck client performs table maintenance: It checks, repairs, optimizes, or analyzes tables.Įach table is locked and therefore unavailable to other sessions while it is being processed, although for check operations, the table is locked with a READ lock only.
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