MYSQL_UPGRADE(1) MySQL Database System 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).
If you install MySQL from RPM packages on Linux, you must install the
server and client RPMs. mysql_upgrade is included in the server RPM
but requires the client RPM because the latter includes mysqlcheck.
(See Section 4.9, “Installing MySQL from RPM Packages on Linux”.)
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]
After running mysql_upgrade, stop the server and restart it so that it
uses any changes that were made to the system tables.
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 2007-2008 MySQL AB
This documentation is free software; you can redistribute it and/or
modify it 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
http://www.gnu.org/licenses/.
SEE ALSO
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/).
MySQL 5.0 02/29/2008 MYSQL_UPGRADE(1)
