mysql_upgrade - check tables for MySQL upgrade
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_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
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:
Display a short help message and exit.
The path to the MySQL installation directory.
The path to the data directory.
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 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]
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 <firstname.lastname@example.org> for more information.
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
MySQL AB (http://www.mysql.com/). This software comes with no warranty.