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1.down 错mysql版本MySQL-server-community-5.0.67-0.rhel5.x86_64.rpm，安装报错
2.安装新down下的版本
rpm -Uvh MySQL-server-community-5.0.67-0.rhel5.i386.rpm
错误如下：
error: Failed dependencies:
MySQL conflicts with mysql-5.0.22-2.1.0.1.x86_64
MySQL conflicts with mysql-5.0.22-2.1.0.1.i386
MySQL-server conflicts with mysql-server-5.0.22-2.1.0.1.x86_64
与先前安装的版本冲突
3.查看先前安装的mysql
rpm -q mysql
mysql-5.0.22-2.1.0.1
mysql-5.0.22-2.1.0.1
4.删除
rpm -e --nodeps mysql-5.0.22-2.1.0.1
错误如下：error: "mysql-5.0.22-2.1.0.1" specifies multiple packages
有多个重名的包
5.全部删除
rpm -e --allmatches mysql-5.0.22-2.1.0.1
错误如下：
error: Failed dependencies:
libmysqlclient.so.15()(64bit) is needed by (installed) perl-DBD-MySQL-3.0007-1.fc6.x86_64
libmysqlclient.so.15()(64bit) is needed by (installed) mysql-server-5.0.22-2.1.0.1.x86_64
libmysqlclient.so.15()(64bit) is needed by (installed) libdbi-dbd-mysql-0.8.1a-1.2.2.x86_64
libmysqlclient.so.15()(64bit) is needed by (installed) dovecot-1.0-1.2.rc15.el5.x86_64
libmysqlclient.so.15()(64bit) is needed by (installed) mysql-connector-odbc-3.51.12-2.2.x86_64
libmysqlclient.so.15(libmysqlclient_15)(64bit) is needed by (installed) perl-DBD-MySQL-3.0007-1.fc6.x86_64
libmysqlclient.so.15(libmysqlclient_15)(64bit) is needed by (installed) mysql-server-5.0.22-2.1.0.1.x86_64
libmysqlclient.so.15(libmysqlclient_15)(64bit) is needed by (installed) libdbi-dbd-mysql-0.8.1a-1.2.2.x86_64
libmysqlclient.so.15(libmysqlclient_15)(64bit) is needed by (installed) dovecot-1.0-1.2.rc15.el5.x86_64
libmysqlclient.so.15(libmysqlclient_15)(64bit) is needed by (installed) mysql-connector-odbc-3.51.12-2.2.x86_64
libmysqlclient_r.so.15()(64bit) is needed by (installed) mysql-server-5.0.22-2.1.0.1.x86_64
libmysqlclient_r.so.15()(64bit) is needed by (installed) MySQL-python-1.2.1-1.x86_64
libmysqlclient_r.so.15()(64bit) is needed by (installed) mysql-connector-odbc-3.51.12-2.2.x86_64
libmysqlclient_r.so.15(libmysqlclient_15)(64bit) is needed by (installed) mysql-server-5.0.22-2.1.0.1.x86_64
libmysqlclient_r.so.15(libmysqlclient_15)(64bit) is needed by (installed) MySQL-python-1.2.1-1.x86_64
libmysqlclient_r.so.15(libmysqlclient_15)(64bit) is needed by (installed) mysql-connector-odbc-3.51.12-2.2.x86_64
mysql = 5.0.22-2.1.0.1 is needed by (installed) mysql-server-5.0.22-2.1.0.1.x86_64
mysql is needed by (installed) MySQL-python-1.2.1-1.x86_64
mysql is needed by (installed) libdbi-dbd-mysql-0.8.1a-1.2.2.x86_64
6.解决
rpm -e perl-DBD-MySQL-3.0007-1.fc6.x86_64
……
相关文件逐个删除，之后运行rpm -e --allmatches mysql-5.0.22-2.1.0.1
成功
7.安装新down下的版本
rpm -Uvh MySQL-server-community-5.0.67-0.rhel5.i386.rpm
成功
真不容易啊，遇到相同情况的同学可以参考
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