myisamchk — MyISAM Table-Maintenance Utility To ensure that  myisamchk  and the server use the same values for full-text parameters, you can place each one in both the  [mysqld]  and  [myisamchk]  sections of an option file: An alternative to using  myisamchk  is to use the  REPAIR TABLE ,  ANALYZE TABLE ,  OPTIMIZE TABLE , or  ALTER TABLE . These statements are performed by the server, which knows the proper full-text parameter values to use. myisamchk  supports the following options for table checking operations: Check the table for errors. This is the default operation if you specify no option that selects an operation type explicitly. Check only tables that have changed since the last check. Check the table very thoroughly. This is quite slow if the table has many indexes. This option should only be used in extreme cases. Normally,  myisamchk  or  myisamchk --medium-check  should be able to determine whether there are any errors in the table. If you are using  --extend-check  and have plenty of memory, setting the  key_buffer_size  variable to a large value helps the repair operation run faster. See also the description of this option under table repair options. For a description of the output format, see Section 4.6.4.5, “Obtaining Table Information with myisamchk” . Check only tables that haven’t been closed properly. Do a repair operation automatically if  myisamchk  finds any errors in the table. The repair type is the same as that specified with the  --recover  or  -r  option. Print informational statistics about the table that is checked. Do a check that is faster than an  --extend-check  operation. This finds only 99.99% of all errors, which should be good enough in most cases. 568 • --read-only ,  -T • --medium-check ,  -m • --information ,  -i • --force ,  -f • --fast ,  -F • --extend-check ,  -e • --check-only-changed ,  -C • --check ,  -c [mysqld] ft_min_word_len=3 [myisamchk] ft_min_word_len=3 4.6.4.2 myisamchk Check Options