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INTERVIEW QUESTIONS DATABASE DBA DETAILS
Question :
What are the components of SGA?
Category DBA Interview Questions
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Added on 5/18/2016
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Answers:

SGA is used to store shared information across all database users.
It mainly includes Library cache, Data Dictionary cache, Database Buffer Cache, Redo log Buffer cache, Shared Pool.

Library cache - It is used to store Oracle statements.

Data Dictionary Cache - It contains the definition of Database objects and privileges granted to users.

Data Base buffer cache - It holds copies of data blocks which are frequently accessed, so that they can be retrieved faster for any future requests.

Redo log buffer cache - It records all changes made to the data files.



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