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Question :
Difference between SGA and PGA ?
Category DBA Interview Questions
Rating (3.2) By 21 users
Added on 5/18/2016
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Answers:

SGA (System Global Area) is a memory area allocated during an instance start up.

SGA is allocated as 40% of RAM size by default.

SGA size is controlled by DB_CACHE_SIZE parameter defined in initialization parameter file (init.ora file or SPFILE).

PGA (Program or Process Global Area) is a memory area that stores a user session specific information.

PGA is allocated as 10% of RAM size by default.



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