compat-libstdc++ not installed when installing Oracle 11.2.0.3 on RHEL6

When installing 11.2.0.3 on RHEL6, to ease the installation, you can install

-bash-4.1# yum install oracle-rdbms-server-11gR2-preinstall

This RPM still don't install 2 required packages: compat-libstdc++ and sysstat

The interesting part is that the package name of compat-libstdc++ is compat-libstdc++-33.

-bash-4.1# yum install compat-libstdc++
Setting up Install Process
No package compat-libstdc++ available.
Error: Nothing to do

-bash-4.1# yum install compat-libstdc++-33
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package compat-libstdc++-33.x86_64 0:3.2.3-69.el6 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

=============================================================================================================================================================================================================================================
 Package                                                         Arch                                               Version                                                    Repository                                               Size
=============================================================================================================================================================================================================================================
Installing:
 compat-libstdc++-33                                             x86_64                                             3.2.3-69.el6                                               ol6_ga_base                                             183 k

Transaction Summary
=============================================================================================================================================================================================================================================
Install       1 Package(s)

Total download size: 183 k
Installed size: 806 k
Is this ok [y/N]: y
Downloading Packages:
Setting up and reading Presto delta metadata
Processing delta metadata
Package(s) data still to download: 183 k
compat-libstdc++-33-3.2.3-69.el6.x86_64.rpm                                                                                                                                                                           | 183 kB     00:01    
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing : compat-libstdc++-33-3.2.3-69.el6.x86_64                                                                                                                                                                                   1/1
  Verifying  : compat-libstdc++-33-3.2.3-69.el6.x86_64                                                                                                                                                                                   1/1

Installed:
  compat-libstdc++-33.x86_64 0:3.2.3-69.el6                                                                                                                                                                                                 

Complete!