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MEMORY MANAGEMENT IN ORACLE
11G R2
MEMORY PARAMETERS
 New automatic memory management feature
 Takes care of both major memory component
     Shared Global Area (SGA)
     Program Global Area (PGA)

   Automatically expand and shrunk SGA and PGA
    based on instance needs.
MEMORY PARAMETERS (CONT..)
   Two parameters are set need to set
     memory_target
     memory_max_target

   memory_target
     Sets the system-wide usable memory and lets Oracle
      tune the SGA and PGA both.
     DBA can change value for this parameter using alter
      system command.
MEMORY PARAMETERS (CONT..)
   memory_max_target
     Maximum value of memory Oracle can use.
     The value you set for the memory_max_target
      parameter is the max value uptp which you can adjust
      the memory_target parameter’s value.
   E.g
    memory_max_target = 500MB
    memory_target = 350MB
    sga_target = 0
    pga_aggregate_target = 0
THANK YOU
Contact me :- pankajmitsom@gmail.com

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Memory management in oracle 11g r2

  • 1. MEMORY MANAGEMENT IN ORACLE 11G R2
  • 2. MEMORY PARAMETERS  New automatic memory management feature  Takes care of both major memory component  Shared Global Area (SGA)  Program Global Area (PGA)  Automatically expand and shrunk SGA and PGA based on instance needs.
  • 3. MEMORY PARAMETERS (CONT..)  Two parameters are set need to set  memory_target  memory_max_target  memory_target  Sets the system-wide usable memory and lets Oracle tune the SGA and PGA both.  DBA can change value for this parameter using alter system command.
  • 4. MEMORY PARAMETERS (CONT..)  memory_max_target  Maximum value of memory Oracle can use.  The value you set for the memory_max_target parameter is the max value uptp which you can adjust the memory_target parameter’s value.  E.g memory_max_target = 500MB memory_target = 350MB sga_target = 0 pga_aggregate_target = 0
  • 5. THANK YOU Contact me :- pankajmitsom@gmail.com