• What is oracle Architecture?
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Answer / madhusmita dash
Oracle architecture is the combination of SGA,Background
Processes,PGA,Physical files like redo log files,control
files,data files etc.These are most important part of the
oracle architecture.
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Answer / charvi
Architecture describes in terms of phycical and logical structure.
Physical--CRD files,Loigal FIles--Tablespace.
Instance:Collection of System Global Area and Background Process.
System Global Area: It Consists of Several Memory structures.
1) Library Cache 2) Data Dictionary Cache 3) Data Buffer Cache $) Redo Buffer Cache 5) Java pool,Large Pool,Stream Pool.
Background Process:
1)Process Monitor(PMON) 2) system Monitor(SMON) 3)Data Base Writer(DBWR) 4)Log Writer(LGWR) 5)Check Point.
Database: The Collection of Control file,Database file,Redo log File.
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Oracle General 
