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 System Architecture  |  Question 27 of 33    Print  
How many Dispatcher Processes are created ?
Atleast one Dispatcher process is created for every communication protocol in use.



  
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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. ...

A user process is created and maintained to execute the software code of an application  program.  It  is  a  shadow  process  created automatically to facilitate communication 

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. 

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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