mysqlhotcopy(1) -- Linux man page



mysqlhotcopy - a database backup program  


mysqlhotcopy arguments



is a Perl script that was originally written and contributed by Tim Bunce. It uses LOCK TABLES, FLUSH TABLES, and cp or scp to make a database backup quickly. It is the fastest way to make a backup of the database or single tables, but it can be run only on the same machine where the database directories are located. mysqlhotcopy works only for backing up MyISAM and ISAM tables, and ARCHIVE tables as of MySQL 4.1. mysqlhotcopy runs on Unix, and as of MySQL 4.0.18 also on NetWare.

shell> mysqlhotcopy db_name [/path/to/new_directory]

shell> mysqlhotcopy db_name_1 ... db_name_n /path/to/new_directory

Back up tables in the given database that match a regular expression:

shell> mysqlhotcopy db_name./regex/

The regular expression for the table name can be negated by prefixing it with a tilde (oq~cq):

shell> mysqlhotcopy db_name./~regex/

mysqlhotcopy supports the following options:

--help, -?

Display a help message and exit.


Do not rename target directory (if it exists); merely add files to it. This option was added in MySQL 4.0.13.


Do not abort if a target exists; rename it by adding an _old suffix.


Insert checkpoint entries into the specified database db_name and table tbl_name.


Base directory of the chroot jail in which mysqld operates. The path value should match that of the --chroot option given to mysqld. This option was added in MySQL 4.0.19.


Enable debug output.

--dryrun, -n

Report actions without performing them.


Flush logs after all tables are locked.

--host=host_name, -h host_name

The hostname of the local host to use for making a TCP/IP connection to the local server. By default, the connection is made to localhost using a Unix socket file.


Do not delete previous (renamed) target when done.


The method for copying files (cp or scp).


Do not include full index files in the backup. This makes the backup smaller and faster. The indexes for reloaded tables can be reconstructed later with myisamchk -rq for MyISAM tables or isamchk -rq for ISAM tables.

--password=password, -ppassword

The password to use when connecting to the server. Note that the password value is not optional for this option, unlike for other MySQL programs. You can use an option file to avoid giving the password on the command line.

Specifying a password on the command line should be considered insecure. See Section 7.6, lqKeeping Your Password Securerq.

--port=port_num, -P port_num

The TCP/IP port number to use when connecting to the local server.

--quiet, -q

Be silent except for errors.


Record master and slave status in the specified database db_name and table tbl_name.


Copy all databases with names that match the given regular expression.


Reset the binary log after locking all the tables.


Reset the file after locking all the tables.

--socket=path, -S path

The Unix socket file to use for the connection.


The suffix for names of copied databases.


The temporary directory. The default is /tmp.

--user=user_name, -u user_name

The MySQL username to use when connecting to the server.

mysqlhotcopy reads the [client] and [mysqlhotcopy] option groups from option files.

To execute mysqlhotcopy, you must have access to the files for the tables that you are backing up, the SELECT privilege for those tables, the RELOAD privilege (to be able to execute FLUSH TABLES), and the LOCK TABLES privilege (to be able to lock the tables).

Use perldoc for additional mysqlhotcopy documentation, including information about the structure of the tables needed for the --checkpoint and --record_log_pos options:

shell> perldoc mysqlhotcopy


isamchk(1), isamlog(1), msql2mysql(1), myisam_ftdump(1), myisamchk(1), myisamlog(1), myisampack(1), mysql(1), mysql.server(1), mysql_config(1), mysql_fix_privilege_tables(1), mysql_zap(1), mysqlaccess(1), mysqladmin(1), mysqlbinlog(1), mysqlcheck(1), mysqld(1), mysqld_multi(1), mysqld_safe(1), mysqldump(1), mysqlimport(1), mysqlshow(1), pack_isam(1), perror(1), replace(1), safe_mysqld(1) 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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