Database Memory & 4030/4031 (MOSC)

MOSC Banner

PGA_AGGREGATE_TARGET and PGA_AGGREGATE_LIMIT

in Database Memory & 4030/4031 (MOSC) 10 commentsAnswered

I'm installing 19c Database Enterprise Edition (standalone database i.e. not using multitenant) on Redhat 7 but I'm having difficulties in setting the PGA memory parameters.

I am using HugePages for SGA and therefore I can't use Automatic Memory Management.

According to the Oracle 19c Database Performance Tuning Guide (https://docs.oracle.com/en/database/oracle/oracle-database/19/tgdba/tuning-program-global-area.html) under "Setting the Initial Value for PGA_AGGREGATE_TARGET" it states that a good starting point is to allocate 80% of server memory to Oracle. 20% of the memory allocated to Oracle is dedicated to PGA, while the remaining 80% is dedicated to the SGA. Hence PGA_AGGREGATE_TARGET=20% * (80% * server memory).

Howdy, Stranger!

Log In

To view full details, sign in to My Oracle Support Community.

Register

Don't have a My Oracle Support Community account? Click here to get started.

Category Leaderboard

Top contributors this month

Instructions for posting

×

1. Select a discussion category from the picklist.


2. Enter a title that clearly identifies the subject of your question.


3. In the body, insert detailed information, including Oracle product and version.


Please abide by the Oracle Community guidelines and refrain from posting any customer or personally identifiable information (PI/CI).


Cloud / Fusion customers - Our Cloud community has moved! Please go to Cloud Customer Connect .


New to My Oracle Support Community? Visit our Welcome Center

MOSC Help Center