Restrictions and Guidelines for RPM-Based Installations
Review these guidelines before you start your RPM-based Oracle Database installation.
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                     Patching Oracle Database software using RPMs is not supported. Please use the OPatch utility and follow the regular patching process to apply Oracle Database patches. 
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                     An RPM-based Oracle Database installation is not available for Standard Edition 2. 
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                     RPM-based database upgrades using rpm -Uvhis not supported. For Oracle Database upgrades, follow the regular upgrade process.
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                     An RPM-based installation supports the installation of multiple Oracle Database software versions into different Oracle homes on the same machine. 
Parent topic: Installing Oracle Database Using RPM Packages