I want to migrate off of RHEL 6.3 to CentOS-6 to save in licensing costs. We will mainly be running Java/WebLogic 11g on these boxes. Are there any issues that I should be aware of when migrating from RHEL 6.3 to CentOS-6? Thanks.
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            No issues at all. The conversion can even be done online/live.
If you have hardware drivers (e.g. HP ProLiant), you may need to modify your /etc/redhat-release to reflect RHEL instead of CentOS.
        ewwhite
        
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        The main issue is that CentOS is downstream from RHEL and therefore you can experience a delay in receiving updated packages (errata).
        HTTP500
        
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