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CentOS 5.4 |
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mysql_upgrade(1) |
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mysql_upgrade − check tables for MySQL upgrade
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mysql_upgrade [options] |
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.
Caution
Some upgrade incompatibilities may require special handling
before you upgrade your MySQL installation and run
mysql_upgrade. See Section 18, “Upgrading
MySQL”, for instructions on determining whether any
such incompatibilities apply to your installation and how to
handle them.
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 10, “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 options in the following list. Other options are passed to mysqlcheck and to mysql_fix_privilege_tables. For example, it might be necessary to specify the −−password[=password] option.
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−−help |
Display a short help message and exit.
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−−basedir=path |
The path to the MySQL installation directory.
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−−datadir=path |
The path to the data directory.
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−−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.)
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−−tmpdir=path, −t path |
The path name of the directory to use for creating temporary files. This option was added in MySQL 5.0.62.
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−−user=user_name, −u user_name |
The MySQL user name to use when connecting to the server. The default user name is root.
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−−verbose |
Verbose mode. Print more information about what the program does.
Copyright 2007−2008 MySQL AB, 2009 Sun Microsystems, Inc.
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/.
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/.
MySQL AB (http://www.mysql.com/).
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mysql_upgrade(1) | |