Being a 32-bit architecture, the database is restricted by the 4GB address limit . In practice, only about 2–3GB may be available for the Oracle System Global Area (SGA) after Windows reserves its share, significantly limiting scalability compared to 64-bit versions.
Since Oracle Premier Support for 11gR2 ended in 2020, security updates are only available if you purchase Extended Support (until 2022) or Sustaining Support (no new patches). If you must remain on this platform, follow mandatory hardening: oracle database 11g release 2 for microsoft windows -32-bit-
At first glance, running a 32-bit database in an era of terabyte RAM and multi-core processors seems anachronistic. However, three primary use cases keep this configuration alive: Being a 32-bit architecture, the database is restricted