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Section: MySQL Database System (1) Updated: 11/18/2010
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myisamlog - display MyISAM log file contents  


myisamlog [options] [log_file [tbl_name] ...]



processes the contents of a MyISAM log file.

Invoke myisamlog like this:

shell> myisamlog [options] [log_file [tbl_name] ...]
shell> isamlog [options] [log_file [tbl_name] ...]

The default operation is update (-u). If a recovery is done (-r), all writes and possibly updates and deletes are done and errors are only counted. The default log file name is myisam.log for myisamlog and isam.log for isamlog if no log_file argument is given. If tables are named on the command line, only those tables are updated.

myisamlog supports the following options:

-?, -I

Display a help message and exit.

-c N

Execute only N commands.

-f N

Specify the maximum number of open files.


Display extra information before exiting.

-o offset

Specify the starting offset.

-p N

Remove N components from path.


Perform a recovery operation.

-R record_pos_file record_pos

Specify record position file and record position.


Perform an update operation.


Verbose mode. Print more output about what the program does. This option can be given multiple times to produce more and more output.

-w write_file

Specify the write file.


Display version information.



Copyright © 1997, 2010, Oracle and/or its affiliates. All rights reserved.

This documentation is free software; you can redistribute it and/or modify it only under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License.

This documentation is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with the program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or see



For more information, please refer to the MySQL Reference Manual, which may already be installed locally and which is also available online at  


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This document was created by man2html, using the manual pages.
Time: 21:24:09 GMT, April 16, 2011