I currently have mysql 5.5 installed. when installing php-mysql on centos 5, it failed due to dependency errors. Seems like the version in the repo conflicts with the MYSQL already installed on the system.

# yum install php-mysql
Loaded plugins: rhnplugin, security
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package php-mysql.x86_64 0:5.1.6-27.el5_5.3 set to be updated
--> Processing Dependency: php-pdo for package: php-mysql
--> Processing Dependency: libmysqlclient.so.15(libmysqlclient_15)(64bit) for package: php-mysql
--> Processing Dependency: libmysqlclient.so.15()(64bit) for package: php-mysql
--> Running transaction check
---> Package mysql.x86_64 0:5.0.77-4.el5_5.5 set to be updated
--> Processing Dependency: perl(DBI) for package: mysql
---> Package php-pdo.x86_64 0:5.1.6-27.el5_5.3 set to be updated
--> Running transaction check
---> Package perl-DBI.x86_64 0:1.52-2.el5 set to be updated
--> Processing Conflict: mysql conflicts MySQL
--> Finished Dependency Resolution
mysql-5.0.77-4.el5_5.5.x86_64 from rhel-x86_64-server-5 has depsolving problems
  --> mysql conflicts with MySQL-server
Error: mysql conflicts with MySQL-server
 You could try using --skip-broken to work around the problem
 You could try running: package-cleanup --problems
                        package-cleanup --dupes
                        rpm -Va --nofiles --nodigest
The program package-cleanup is found in the yum-utils package.

  • did you try the suggestions the install made?
    – Dagon
    Feb 27, 2011 at 5:51
  • Good, you are using Oracle's official mysql binaries. This is the way to get a well-tested mysql server package.
    – MarkR
    Feb 27, 2011 at 8:20

2 Answers 2


Normally this can be fixed by installing MySQL's MySQL-shared-compat package. This will override Redhat's client library and provide what the other packages need. Then yum won't (hopefully) be tempted to install Redhat's dodgy mysql server.

  • I installed the shared-compat package, it didn't help. I had to install PHP 5.3 from a <a href="webtatic.com/packages/php53/">repo here</a>, since php 5.3 does not require php-mysql as a separate package, it works out for me, but how convoluted
    – user12145
    Feb 27, 2011 at 13:38

I'm sorry I don't have a Centos system to look at the packages, but Centos/RHEL have pretty good package dependency trees, and maybe the best thing to do is trust them. I find it very odd that you have a package "mysql". Please see this page on installing MySQL on Centos.

Restoring from a MySQL dump is a very reliable process. What I would do in your shoes is do a mysqldump of all your databases, remove all mysql packages, then try installing php-mysql and let it bring in what it thinks are the right packages. Then you can restore your data from the dump you made.

  • nice suggestion on yum group, I will try that next time. dump the data out and reinstall mysql is too much of a time consuming task for me so I installed php 5.3 instead
    – user12145
    Feb 27, 2011 at 13:41

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