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MYSQL_UPGRADE(1)


NAME

  mysql_upgrade - check tables for MySQL upgrade


SYNOPSIS

  mysql_upgrade [options]


DESCRIPTION

  mysql_upgrade should be executed each time you upgrade MySQL. It checks all
  tables in all databases for incompatibilities with the current version of
  MySQL Server. If a table is found to have a possible incompatibility, it is
  checked. If any problems are found, the table is repaired.  mysql_upgrade
  also upgrades the system tables so that you can take advantage of new
  privileges or capabilities that might have been added.

  All checked and repaired tables are marked with the current MySQL version
  number. This ensures that next time you run mysql_upgrade with the same
  version of the server, it can tell whether there is any need to check or
  repair the table again.

  mysql_upgrade also saves the MySQL version number in a file named
  mysql_upgrade.info in the data directory. This is used to quickly check if
  all tables have been checked for this release so that table-checking can be
  skipped. To ignore this file, use the --force option.

  To check and repair tables and to upgrade the system tables, mysql_upgrade
  executes the following commands:

     mysqlcheck --check-upgrade --all-databases --auto-repair
     mysql_fix_privilege_tables

  mysql_upgrade supersedes the older mysql_fix_privilege_tables script. In
  MySQL 5.0.19, mysql_upgrade  was added as a shell script and worked only
  for Unix systems. As of MySQL 5.0.25, mysql_upgrade is an executable binary
  and is available on all systems. On systems older than those supporting
  mysql_upgrade, you can execute the mysqlcheck command manually, and then
  upgrade your system tables as described in mysql_fix_privilege_tables(1).

  For details about what is checked, see the description of the FOR UPGRADE
  option of the CHECK TABLE statement (see Section 5.2.3, CHECK TABLE
  Syntax).

  To use mysql_upgrade, make sure that the server is running, and then invoke
  it like this:

     shell> mysql_upgrade [options]

  mysql_upgrade reads options from the command line and from the
  [mysql_upgrade] group in option files. It supports the following options:

  ·  --help

     Display a short help message and exit.

  ·  --basedir=path

     The path to the MySQL installation directory.

  ·  --datadir=path

     The path to the data directory.

  ·  --force

     Force execution of mysqlcheck even if mysql_upgrade has already been
     executed for the current version of MySQL. (In other words, this option
     causes the mysql_upgrade.info file to be ignored.)

  ·  --user=user_name, -u user_name

     The MySQL username to use when connecting to the server. The default
     username is root.

  ·  --verbose

     Verbose mode. Print more information about what the program does.

  Other options are passed to mysqlcheck and to mysql_fix_privilege_tables.
  For example, it might be necessary to specify the --password[=password]
  option.


COPYRIGHT

  Copyright 1997-2007 MySQL AB

  This documentation is NOT distributed under a GPL license. Use of this
  documentation is subject to the following terms: You may create a printed
  copy of this documentation solely for your own personal use. Conversion to
  other formats is allowed as long as the actual content is not altered or
  edited in any way. You shall not publish or distribute this documentation
  in any form or on any media, except if you distribute the documentation in
  a manner similar to how MySQL disseminates it (that is, electronically for
  download on a Web site with the software) or on a CD-ROM or similar medium,
  provided however that the documentation is disseminated together with the
  software on the same medium. Any other use, such as any dissemination of
  printed copies or use of this documentation, in whole or in part, in
  another publication, requires the prior written consent from an authorized
  representative of MySQL AB. MySQL AB reserves any and all rights to this
  documentation not expressly granted above.

  Please email <docs@mysql.com> for more information.


SEE ALSO

  make_win_bin_dist(1), msql2mysql(1), my_print_defaults(1),
  myisam_ftdump(1), myisamchk(1), myisamlog(1), myisampack(1), mysql(1),
  mysql.server(1), mysql_config(1), mysql_explain_log(1),
  mysql_fix_privilege_tables(1), mysql_install_db(1), mysql_tzinfo_to_sql(1),
  mysql_zap(1), mysqlaccess(1), mysqladmin(1), mysqlbinlog(1), mysqlcheck(1),
  mysqld(8), mysqld_multi(1), mysqld_safe(1), mysqldump(1), mysqlhotcopy(1),
  mysqlimport(1), mysqlmanager(8), mysqlshow(1), ndb_config(1), ndb_cpcd(1),
  ndb_delete_all(1), ndb_desc(1), ndb_drop_index(1), ndb_drop_table(1),
  ndb_error_reporter(1), ndb_mgm(1), ndb_mgmd(1), ndb_print_backup_file(1),
  ndb_print_schema_file(1), ndb_print_sys_file(1), ndb_restore(1),
  ndb_select_all(1), ndb_select_count(1), ndb_show_tables(1), ndb_size.pl(1),
  ndb_waiter(1), ndbd(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
  http://dev.mysql.com/doc/.


AUTHOR

  MySQL AB (http://www.mysql.com/).  This software comes with no warranty.

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