"Error: Multilib version problems found" When Installing Required RPMS on OEL 6

Following error could be seen while trying to install required RPMS as part of 12c pre-req task (1529864.1). OS is OEL 6 (2.6.32-358.18.1.el6.x86_64).

yum install libXi.i686
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package libXi.i686 0:1.7.2-2.2.el6 will be installed
--> Processing Dependency: libXext.so.6 for package: libXi-1.7.2-2.2.el6.i686
--> Running transaction check
---> Package libXext.x86_64 0:1.3.1-2.el6 will be updated
---> Package libXext.i686 0:1.3.2-2.1.el6 will be installed
---> Package libXext.x86_64 0:1.3.2-2.1.el6 will be an update
--> Finished Dependency Resolution
Error:  Multilib version problems found. This often means that the root
       cause is something else and multilib version checking is just
       pointing out that there is a problem. Eg.:

         1. You have an upgrade for libXi which is missing some
            dependency that another package requires. Yum is trying to
            solve this by installing an older version of libXi of the
            different architecture. If you exclude the bad architecture
            yum will tell you what the root cause is (which package
            requires what). You can try redoing the upgrade with
            --exclude libXi.otherarch ... this should give you an error
            message showing the root cause of the problem.

         2. You have multiple architectures of libXi installed, but
            yum can only see an upgrade for one of those arcitectures.
            If you don't want/need both architectures anymore then you
            can remove the one with the missing update and everything
            will work.

         3. You have duplicate versions of libXi installed already.
            You can use "yum check" to get yum show these errors.

       ...you can also use --setopt=protected_multilib=false to remove
       this checking, however this is almost never the correct thing to
       do as something else is very likely to go wrong (often causing
       much more problems).

       Protected multilib versions: libXi-1.7.2-2.2.el6.i686 != libXi-1.6.1-3.el6.x86_64
 You could try using --skip-broken to work around the problem
** Found 2 pre-existing rpmdb problem(s), 'yum check' output follows:
oracle-rdbms-server-11gR2-preinstall-1.0-7.el6.x86_64 has missing requires of kernel-uek
oracle-rdbms-server-12cR1-preinstall-1.0-8.el6.x86_64 has missing requires of kernel-uek

In this case the root cause as the output suggested was that i686 version of the rpm was of higher version than already installed x86_64 version.


To resolve this update the currently installed x86_64 version and then install the i686 version.

yum update libXi
Setting up Update Process
Resolving Dependencies
--> Running transaction check
--->Package libXi.x86_64 0:1.6.1-3.el6 will be updated
...

yum install libXi.i686
Setting up Install Process
Resolving Dependencies
--> Running transaction check
--->Package libXi.i686 0:1.7.2-2.2.el6 will be installed
....

Useful metalink notes
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