To download Oracle Database 11.2.0.4 for Linux x86-64 , you must My Oracle Support (MOS)
Oracle Database 11gR2 (11.2.0.4) installation on Oracle Linux 6.4 download oracle 11.2 0.4 for linux x86-64
Once downloaded, ensure your Linux environment is prepared before running the installer: To download Oracle Database 11
(The other files are for Grid Infrastructure and clients, but for a standard database installation, files 1 and 2 are the treasure you seek.) but for a standard database installation
Click on the link that says: "Linux x86-64" .