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Oracle Learning Library : Oracle Database 12c Architecture Overview This video explains some of the Oracle Database 12c architecture changes. This is an introductory video for the Oracle Database 12c Posters. Oracle by Example (OBE) Oracle Learning Library : Oracle Database 12c Multitentent Architecture Overview This video shows you the main components of the Oracle Database 12c new multitenant architecture. Oracle by Example (OBE)

In previous releases, Oracle processes did not run as threads on UNIX and Linux systems. Starting in Oracle Database 12c, the multithreaded Oracle Database model enables Oracle processes to execute as operating system threads in separate address spaces. THREADED_EXECUTION specifies whether to enable the multithreaded Oracle model. Starting in Oracle Database 12c, the multithreaded Oracle model enables Oracle processes on UNIX and Linux to run as operating system threads in separate address spaces. The choice of threading model is dictated by the THREADED_EXECUTION initialization parameter. THREADED_EXECUTION=NO : The default value causes Oracle to run using the multiprocess model. THREADED_EXECUTION=YES : Oracle runs with the multithreaded model.