Symantec Backup Exec fails with "libstdc++.so.5 missing"

Issue

• I'm trying to install the Symantec Backup Exec product in my RHEL host but I'm getting the following message

Error:: ERROR (V-225-261): Prerequisite Warning - libstdc++.so.5 missing

• After the installation of the compat-libstdc++-33 RPM, I've restarted the host but the same error message appears

• If I try to install it again it fails stating that the RPM is already installed

yum install libstdc++.so.5
Setting up Install Process
Package compat-libstdc++-33-3.2.3-69.el6.i686 already installed and latest version
Nothing to do.