MYSQL_UPGRADE(1) MySQL Database System MYSQL_UPGRADE(1)
NAME
mysql_upgrade - check tables for MySQL upgrade
SYNOPSIS
mysql_upgrade [options]
DESCRIPTION
mysql_upgrade examines all tables in all databases for incompatibilities with the current version of MySQL
Server. mysql_upgrade also upgrades the system tables so that you can take advantage of new privileges or
capabilities that might have been added.
mysql_upgrade should be executed each time you upgrade MySQL. It supersedes the older
mysql_fix_privilege_tables script, which should no longer be used.
If a table is found to have a possible incompatibility, mysql_upgrade performs a table check. If any problems
are found, a table repair is attempted. If the table cannot be repaired, see Section 2.4.4, “Rebuilding or
Repairing Tables or Indexes” for manual table repair strategies.
Note
On Windows Server 2008 and Windows Vista, you must run mysql_upgrade with administrator privileges. You
can do this by running a Command Prompt as Administrator and running the command. Failure to do so may
result in the upgrade failing to execute correctly.
Caution
You should always back up your current MySQL installation before performing an upgrade. See Section 6.2,
“Database Backup Methods”.
Some upgrade incompatibilities may require special handling before you upgrade your MySQL installation and
run mysql_upgrade. See Section 2.4.1, “Upgrading MySQL”, for instructions on determining whether any such
incompatibilities apply to your installation and how to handle them.
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 any changes made to the system tables take
effect.
mysql_upgrade executes the following commands to check and repair tables and to upgrade the system tables:
mysqlcheck --all-databases --check-upgrade --auto-repair
mysql < fix_priv_tables
mysqlcheck --all-databases --check-upgrade --fix-db-names --fix-table-names
Notes about the preceding commands:
· Because mysql_upgrade invokes mysqlcheck with the --all-databases option, it processes all tables in all
databases, which might take a long time to complete. Each table is locked and therefore unavailable to
other sessions while it is being processed. Check and repair operations can be time-consuming,
particularly for large tables.
· For details about what checks the --check-upgrade option entails, see the description of the FOR UPGRADE
option of the CHECK TABLE statement (see Section 12.4.2.3, “CHECK TABLE Syntax”).
· fix_priv_tables represents a script generated internally by mysql_upgrade that contains SQL statements to
upgrade the tables in the mysql database.
This is used to quickly check whether all tables have been checked for this release so that table-checking can
be skipped. To ignore this file and perform the check regardless, use the --force option.
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 2.6.1, “Installing MySQL from RPM Packages on Linux”.)
In MySQL 5.1.7, mysql_upgrade was added as a shell script and worked only for Unix systems. As of MySQL
5.1.10, mysql_upgrade is an executable binary and is available on all systems.
mysql_upgrade supports the following options, which can be specified on the command line or in the
[mysql_upgrade] and [client] option file groups. Other options are passed to mysqlcheck. For example, it might
be necessary to specify the --password[=password] option. mysql_upgrade also supports the options for
processing option files described at Section 4.2.3.3.1, “Command-Line Options that Affect Option-File
Handling”.
· --help
Display a short help message and exit.
· --basedir=path
The path to the MySQL installation directory. This option is accepted for backward compatibility but
ignored.
· --datadir=path
The path to the data directory. This option is accepted for backward compatibility but ignored.
· --debug-check
Print some debugging information when the program exits. This option was added in MySQL 5.1.21.
· --debug-info, -T
Print debugging information and memory and CPU usage statistics when the program exits. This option was
added in MySQL 5.1.21.
· --force
Ignore the mysql_upgrade_info file and force execution of mysqlcheck even if mysql_upgrade has already
been executed for the current version of MySQL.
· --tmpdir=path, -t path
The path name of the directory to use for creating temporary files. This option was added in MySQL 5.1.25.
· --user=user_name, -u user_name
The MySQL user name to use when connecting to the server. The default user name is root.
· --verbose
Verbose mode. Print more information about what the program does.
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
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
Sun Microsystems, Inc. (http://www.mysql.com/).
MySQL 5.1 04/06/2010 MYSQL_UPGRADE(1)
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