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 System Architecture  |  Question 29 of 33    Print  
What is the maximum number of Lock Processes used ?
Though  a single LCK process is sufficient for most Parallel Server systems
upto Ten Locks (LCK0,....LCK9) are used for inter-instance locking.



  
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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. ...
In  a Multi-threaded Server Configuration many user processes share a group of server process. 
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. ...
Process Monitor (PMON)  performs process recovery when a user process fails PMON  is  responsible  for cleaning up the cache and Freeing resources that the  process  was using 
Dispatcher   (Dnnn)  process  is  responsible  for  routing  requests  from connected user processes to available shared server processes and returning the 
Atleast one Dispatcher process is created for every communication protocol in use. 
Lock  (LCKn)  are  used for inter-instance locking when the ORACLE Parallel Server option is used. 
Though  a single LCK process is sufficient for most Parallel Server systemsupto Ten Locks (LCK0,....LCK9) are used for inter-instance locking. 

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