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Oracle database operating system memory allocation management for PGA – part 4: Oracle and AMM

This is the 4th post in a series of posts on PGA behaviour of Oracle. Earlier posts are: here (PGA limiting for Oracle 12), here (PGA limiting for Oracle 11.2) and the quiz on using PGA with AMM, into which this blogpost dives deeper.

As laid out in the quiz blogpost, I have a database with the following specifics:
-Oracle Linux x86_64 6u6.
-Oracle database PSU 4
-Oracle database (single instance) with the following parameter set: memory_target=1G. No other memory related parameters set.