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 System Architecture  |  Question 32 of 33    Print  
why oracle is called kernel package
components of oracle table
sql system variables
local and global variables

  
Total Answers and Comments: 0 Last Update: December 04, 2006     Asked by: kavita 
  
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SGA  and  ORACLE  background  processes constitute an ORACLE instance. (or) Combination of memory structure and background process. 
Latest Answer : Oracle Instance is an combination of background process and memory structures. ...
The  System Global Area (SGA) is a shared memory region allocated by ORACLE that contains data and control information for one ORACLE instance. 
Latest Answer : System Global Area (SGA) is component of instance which consist shared memory & control information of the instance It consist of shared pool, database buffer cached, redo log buffer, large pool, Java pool. ...
Database buffers, Redo Log Buffer the Shared Pool and   Cursors. 
Latest Answer : Yes. they are part of SGA. Sharedpool comprises of Library cache and data dictionary cache. ...
Program Global Area (PGA) is a memory buffer that contains data and control information for a server process. 
Latest Answer : A programme global area is a memory buffer that contains data and consitute the Oracle Database and Instance.Ex: A client server process uses its Pga to hold the state of the session programme variables and packages. ...
Server  Process  handle  requests  from  connected  user  process. A server process is in charge of communicating with the user process and interacting with ORACLE carry 
A configuration for loosely coupled systems where multiple instance share a single physical database is called Parallel Server. 
DBWR - Database Writer.LGWR - Log WriterCKPT - Check PointSMON - System MonitorPMON - Process MonitorARCH - ArchiverRECO - RecoverDnnn - Dispatcher, andLCKn - LockSnnn - Server. 
Latest Answer : Mandatory Processes DBWR - Database Writer.LGWR - Log WriterCKPT - Check PointSMON - System MonitorPMON - Process Monitor Optional Process ARCH - ArchiverRECO - RecoverDnnn - Dispatcher, andLCKn - LockSnnn - Server. ...
System  Monitor (SMON)  performs instance recovery at instance start-up. In a multiple instance system (one that uses the Parallel Server), SMON of one instance  can  also  perform 
Latest Answer : If server unplanned shutdown, Power failiure SMON Instant recovery. there is two type of Instant recovery 1st is Roll forward 2nd Roll back.Rollback means comitted transaction.Rollforward means uncommitted transaction. ...
RECOver (RECO) is used to resolve distributed transactions that are pending due  to  a  network  or  system failure in a distributed database. At timed intervals,the  local  
Lock  (LCKn)  are  used for inter-instance locking when the ORACLE Parallel Server option is used. 

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