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Under GNU General Public License
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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-charac-
ter-set=...] [-d|--description] [-e|--extend-check] [-f|--force] [-?|--help] [-i|--infor-
mation] [-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 isam-
chk should normally find all errors even without this switch
-f|--force
Overwrite old temporary files. If one uses -f when checking tables (running isam-
chk 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 original 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 ver-
bosity!
-V|--version
Print version and exit.
-w|--wait
Wait if table is locked.
SEE ALSO
isamchk (1), isamlog (1), mysqlaccess (1), mysqladmin (1), mysqlbug (1), mysqld (1),
mysqldump (1), mysqlshow (1), msql2mysql (1), perror (1), replace (1), safe_mysqld (1),
which1 (1), zap (1),
AUTHOR
Ver 1.0, distribution 3.23.29a Michael (Monty) Widenius (monty AT tcx.se), TCX Datakonsult AB
(http://www.tcx.se). This software comes with no warranty. Manual page by L. (Kill-9)
Pedersen (kill-9 AT kill-9.dk), Mercurmedia Data Model Architect / system developer
(http://www.mercurmedia.com)
MySQL 3.23 19 December 2000 isamchk(1)
Generated by $Id: phpMan.php,v 4.54 2007/08/21 09:05:22 chedong Exp $ Author: Che Dong
On Apache/1.3.33 (Unix) PHP/4.3.10
Under GNU General Public License
2008-09-05 12:37 @38.103.63.61 CrawledBy CCBot/1.0 (+http://www.commoncrawl.org/bot.html)