To download the full 11.2.0.4 installation media for Linux x86-64, follow these instructions: Step 1: Access My Oracle Support

Once you have successfully downloaded the required zip files, follow these key steps to install Oracle Database 11.2.0.4 on your Linux x86-64 system:

For over a decade, Oracle Database 11g Release 2 (11.2.0.4) has been a trusted enterprise data management solution. As the final patch set for the 11g series, it represents the most mature, stable, and feature-complete version of the 11g product line.

Oracle distributes its software through several official channels, each serving different user needs.