While 12c and 19c introduced "Pluggable Databases," 11.2.0.4 perfected the traditional architecture. Key benefits include:
Oracle Database 11g Release 2 (11.2.0.4) Download and Overview oracle database 11g release 2 11.2 0.4 download
Before running the runInstaller (Linux) or setup.exe (Windows), ensure your environment meets these criteria: While 12c and 19c introduced "Pluggable Databases," 11
It is important to note that Oracle 11gR2 has passed its phase. Running 11.2.0.4 in production today usually means you are on Sustaining Support , which does not include new security patches (CPU/SPU) or bug fixes unless you have a specific specialized contract. Most organizations use 11.2.0.4 as a stepping stone to Oracle 19c , which is the current Long Term Release. Summary Table Release Name Oracle Database 11g Release 2 Patch Set Version 11.2.0.4.0 Patch Number (MOS) Architecture 64-bit (Preferred) / 32-bit Primary Use Case Legacy App Support / Migration Staging Most organizations use 11