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ISAMCHK(1)									       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@tcx.se), TCX Datakonsult AB
       (http://www.tcx.se).   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.mercurmedia.com)

					 19 December 2000			       ISAMCHK(1)
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