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Multi-Process Multi-Threaded Architecture in Oracle 12c

Overview

In default Unix/Linux architecture, every Oracle process including background and foregroundĀ onesĀ runs as a dedicated OS process.

In 12c release 1 ( 12.1.0.x ) multi-process multi-threaded architecture, those four background processes ( PMON, DBW, VKTM and PSP) run as dedicated OS processes, the rest processes can be configured running as a thread, which largely saves CPU and Memory usage. 2,268 more words

12c New Features