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C-ISAM 5.0
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isamchk(1) MySQL database isamchk(1) NAME
isamchk - Description, check and repair of ISAM tables. Used without options all tables on the command will be checked for errors USAGE
isamchk [OPTIONS] tables[.ISM] SYNOPSIS
isamchk [-a|--analyze] [-#|--debug=...] [--character-sets-dir=...] [-C|--default-character-set=...] [-d|--description] [-e|--extend-check] [-f|--force] [-?|--help] [-i|--information] [-k|--keys-used=#] [-l|--no-symlinks] [-q|--quick] [-r|--recover] [-o|--safe-recover] [-O|--set-variable var=option] [-s|--silent] [-S|--sort-index] [-R|--sort-records=#] [-u|--unpack] [-v|--verbose] [-V|--version] [-w|--wait] DESCRIPTION
-a|--analyze Analyze distribution of keys. Will make some joins in MySQL faster. -#|--debug=... Output debug log. Often this is 'd:t:o ,filename` --character-sets-dir=... Directory where character sets are -C|--default-character-set=... Set the default character set -d|--description Prints some information about table. -e|--extend-check Check the table VERY thoroughly. One need use this only in extreme cases as isamchk should normally find all errors even without this switch -f|--force Overwrite old temporary files. If one uses -f when checking tables (running isamchk without -r), isamchk will automatically restart with -r on any wrong table. -?|--help Display help and exit. -i|--information Print statistics information about the table -k|--keys-used=# Used with '-r'. Tell ISAM to update only the first # keys. This can be used to get faster inserts! -l|--no-symlinks Do not follow symbolic links when repairing. Normally isamchk repairs the table a symlink points at. -q|--quick Used with -r to get a faster repair. (The data file isn't touched.) One can give a second '-q' to force isamchk to modify the origi- nal datafile. -r|--recover Can fix almost anything except unique keys that aren't unique. -o|--safe-recover Uses old recovery method; slower than '-r' but can handle a couple of cases that '-r' cannot handle. -O| --set-variable var=option Change the value of a variable. -s|--silent Only print errors. One can use two -s to make isamchk very silent -S|--sort-index Sort index blocks. This speeds up 'read-next' in applications -R|--sort-records=# Sort records according to an index. This makes your data much more localized and may speed up things (It may be VERY slow to do a sort the first time!) -u|--unpack Unpack file packed with pack_isam. -v|--verbose Print more information. This can be used with -d and -e. Use many -v for more verbosity! -V|--version Print version and exit. -w|--wait Wait if table is locked. SEE ALSO
isamlog(1), mysql(1), mysqlaccess(1), mysqladmin(1), mysqld(1), mysqld_multi(1), mysqld_safe(1), mysqldump(1), mysql_fix_privi- lege_tables(1), mysqlshow(1), mysql_zap(1), perror(1), replace(1) For more information please refer to the MySQL reference manual, which may already be installed locally and which is also available online at http://www.mysql.com/doc/en/ BUGS
Please refer to http://bugs.mysql.com/ to report bugs. AUTHOR
Ver 1.0, distribution 4.0.24 Michael (Monty) Widenius (monty@mysql.com), MySQL AB (http://www.mysql.com/). This software comes with no warranty. Manual page by L. (Kill-9) Pedersen (kill-9@kill-9.dk), Mercurmedia Data Model Architect / system developer (http://www.mercur- media.com) ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+------------------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+------------------------------------+ |Availability | SUNWmysqlr, SUNWmysqlu, SUNWmysqlt | +--------------------+------------------------------------+ |Interface Stability | External | +--------------------+------------------------------------+ NOTES
Source for mysql is available on http://opensolaris.org. MySQL 4.0 19 December 2000 isamchk(1)
