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How much SGA..? [message #117395] Wed, 27 April 2005 00:18 Go to next message
sunil_v_mishra
Messages: 506
Registered: March 2005
Senior Member
hi,

Can any one tell me that is it true or false that , By default 50% of RAM is allocated to the oracle SGA when database is started?

Note :- answer me in true or false

from :- sunil
Re: How much SGA..? [message #117400 is a reply to message #117395] Wed, 27 April 2005 01:14 Go to previous messageGo to next message
girish.rohini
Messages: 744
Registered: April 2005
Location: Delhi (India)
Senior Member
FAlse

Allocation of SGA depends on the componet sizing you have done in the initialization parameter file.


Re: How much SGA..? [message #117430 is a reply to message #117400] Wed, 27 April 2005 05:54 Go to previous messageGo to next message
sunil_v_mishra
Messages: 506
Registered: March 2005
Senior Member
hi,

Girish i know the size of SGA is based on the parameter in init.ora.... but when i install oracle 9i database software then i m not specifying any parameter value for SGA but default some SGA size is taken into consideration i think it is nearly 50% of RAM of the server ....

Please check out this issue with few more Oracle DBA Expert.. i am not telling that your answer is wrong but i have doubt...b'coz when we do coustom installation at that time it ask probably for size ...but when we are not doing custom installion of Oracle Database software do we specify the size of SGA?

Thanks For your help
From:- Sunil
Re: How much SGA..? [message #117435 is a reply to message #117430] Wed, 27 April 2005 06:09 Go to previous message
girish.rohini
Messages: 744
Registered: April 2005
Location: Delhi (India)
Senior Member
In case of typical installations oracle calculates the size as approx 70% of physical ram size for the system on which database is getting installed.

No we do not specify SGA size while doing typical installation for Oracle.
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