I understand SGA_TARGET and SGA_MAX_SIZE well?

Let's say that I updated SGA_TARGET and SGA_MAX_SIZE 1024Mo 512 MB.

As I understand it, this means that the total size of the SGA will never exceed 1024Mo (it's the "hard cap"). Oracle will try to keep things around 512 MB, but can explode up to 1024 MB, depending on the needs.

Is this correct? Otherwise, I don't see the point of SGA_MAX_SIZE SGA_TARGET vs.

BTW... I know that MEMORY_TARGET and MEMORY_MAX_TARGET are the new 11g params, but Oracle XE comes with those turned off and the 10g SGA_ * params and PGA_AGGREGATE_TARGET updated...?

It is not correct.

This means that you can increase up to SGA_MAX_SIZE SGA_TARGET without having to bounce the database.
Also Oracle won't increase SGA_TARGET, it will just make sure that the sizes of the different basins do not exceed SGA_TARGET.
You are still responsible for the management of SGA_TARGET.

------------
Sybrand Bakker
Senior Oracle DBA

Tags: Database

Similar Questions

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    Hi s/n,.
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    H,

    Is there any Ant limited with size SGA_TARGET with 64-bit as 4 GB with 32-bit system.

    See
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    Is there any negative impact on the database when we increase size SGA_TARGET and SGA_MAx_Size

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    To increase the size of the sga for your instance or down,
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    3. start the PB with the file pfile as "SQL > STARTUP PFILE = 'path of the pfile edited'"
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    * If you do not have a pfile file and then create a pfile file by "SQL > CREATE PFILE ="the pfile file path"OF SPFILE.

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    Respect of
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    Hello

    ABT a little my current system

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    Can someone explain to me what is the diference between

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    Read the documentation:
    http://download.Oracle.com/docs/CD/B19306_01/server.102/b14237/initparams193.htm#sthref592
    http://download.Oracle.com/docs/CD/B19306_01/server.102/b14237/initparams192.htm#sthref590

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    Published by: Yasir Hashmi on October 13, 2010 10:27

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    Thank you
    RAM

    Edited by: user622616 May 19, 2010 19:50

    Yes you can. If you use spfile, create a pfile with current values...

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