Oracle.exe consuming 10GB of total 16GB physical memory.

I am using Oracle 11g on windows 2008 R2 during utilization check of memory i found the my ORACLE.EXE is consuming 10GB of physical memory. my total physical memory size is 16GB. I am not getting why my oracle.exe is consuming so much of memory.
My SGA details are as follows :
SQL> show sga
Total System Global Area 1.0689E+10 bytes
Fixed Size 2185160 bytes
Variable Size 2046822456 bytes
Database Buffers 8623489024 bytes
Redo Buffers 16977920 bytes
Please suggest how can i reduce my memory utilization??

Hii, thanks for the useful documents.
I have checked the parameter n the output is as follows
SQL> show parameter target
NAME TYPE VALUE
archive_lag_target integer 0
db_flashback_retention_target integer 1440
fast_start_io_target integer 0
fast_start_mttr_target integer 0
memory_max_target big integer 0
memory_target big integer 0
parallel_servers_target integer 128
pga_aggregate_target big integer 2G
sga_target big integer 10G
SQL> select component,current_size,min_size,max_size,user_specified_size,granule_size from v$memory_dynamic_components;
COMPONENT CURRENT_SIZE MIN_SIZE MAX_SIZE USER_SPECIFIED_SIZE GRANULE_SIZE
shared pool 1879048192 1879048192 1879048192 0 33554432
large pool 33554432 33554432 33554432 0 33554432
java pool 134217728 134217728 134217728 0 33554432
streams pool 0 0 0 0 33554432
SGA Target 1.0737E+10 1.0737E+10 1.0737E+10 1.0737E+10 33554432
DEFAULT
buffercache 8623489024 8623489024 8623489024 0 33554432
KEEP
buffercache 0 0 0 0 33554432
RECYCLE
buffer cache 0 0 0 0 33554432
DEFAULT 2K
buffercache 0 0 0 0 33554432
DEFAULT 4K
buffercache 0 0 0 0 33554432
DEFAULT 8K
buffercache 0 0 0 0 33554432
DEFAULT 16K
buffercache 0 0 0 0 33554432
DEFAULT 32K
buffercache 0 0 0 0 33554432
Shared IO
Pool 0 0 0 0 33554432
PGA Target 2147483648 2147483648 2147483648 2147483648 33554432
ASM
BufferCache 0 0 0 0 33554432
Please tell me by changing or setting which parameter i can reduce my physical memory size???

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Oracle.exe consuming 100% CPU on windows and database hang

Hi all,
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Is this a new application on this database?
Has it run well in the past?
I have had this happen before on a 32bit Windows server. Our problem was a poorly written procedure that kept pegging the cpu to 100%. You should be able to figure out what SQL is being used that is causing this problem, it will be the Top Working SQL most likely.
I also had this problem on a Logical Standby server which was trying to apply SQL to the SYS.AUD$ table. As soon as SQL Apply was started, the CPU went to 100%. Once I truncated that table, the cpu usage went back to normal. Not sure what you are using to monitor your database but if you can, try to find out what SQL is running when your CPU goes to 100%.

Oracle.exe consuming lots of memory

hi
i am using Oracle 10g release2
after installation, when i'm booting my system (Windows XP) it takes a lot of time to finish all the files to load. when i inspected the task manager, there were 2 instances or oracle.exe running each consuming approximately 200,000K each. i feel like this particular thing is slowing down the system. what are ur suggestions please ? if actually its the problem, what is the solution u propose ?

user10434417 wrote:
there are 2 databases running and i've 2GB RAM in my system2gb RAM is awefully lesser compared to the current version's requirements of oracle. Also, I believe you must have not modified the sga/pga settings as well since the default values are very high. I would suggest that you try to check the sga/pga sizes and reduce them to the minimum which is 160MB for the SGA and 91MB for PGA if these databases are merely for testing/learning.
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I have installed Oracle8i (8.1.7) for NT. I sized SGA to require about 15MB. But when the instance initiates, the oracle.exe process is getting about 30MB of memory! Do you know the reason??
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If you are running 32-bit Windows, then it doesn't matter that you've got 8GB physically in the box: that's a common over-configuration. A 32-bit Windows system can only see 4GB of RAM -and only 2GB of that is available to user-mode programs like Oracle.
If you use a /3GB switch, you can let user-mode programs see 3GB instead of 2GB. But that's your lot.
Unless you are also using a /PAE switch, though that has interesting interactions with the /3GB switch and everything else!
Let's assume you're using a bog-standard Windows environment with no odd boot-time switches. That means 2GB is your limit. And that's for everything Oracle might want to use it for: PGA and SGA alike. I don't know how big your PGA needs to be, but assume a worst-case: allow 50% for the PGA, and 50% for the SGA. That means your SGA_MAX_SIZE parameter should be no bigger than 1GB.
For some reason, you say this sort of thing is "not an option". That's fine: but then you live with the massive swapping to disk that will ensue if you don't keep within bounds. Your choice, really.
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Oracle.exe is consuming 100% cpu o windows

Hi,
We have 6 oracle 10g database on windows box and from task manager we are able to see oracle.exe is consuming 100% cpu
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Thanks

On my Vista PC, I find that the easiest way to identify which instance an oracle.exe is, is the task manager. On the Processes tab, right-click the oracle.exe and then click Go To Service(s) and that takes me to the OracleServiceORCL or whichever insance it is.
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My ram is of 16gb
sga_max_size =8g
Pga_aggregate_target=1.5g
Oracle.exe goes upto 15gb.
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Simple: Oracle processes are implemented as threads within Oracle.exe. So you all of your sessions communicate with a corresponding thread in the Oracle.exe service. Evidently those threads consume memory.
A SGA of 8 Gb, 50 percent of physical RAM, looks a bit outrageous to me.
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> What ever be the case..there must be some memory consumed by the oracle
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Oracle is not SQL-Server.
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Dear Experts,
Please help me in checking why virtual bytes in perfmon is taking more than memory we allocated.
OS
Windows Server 2003 R2 Enterprise x64 Edition Service Pack 2 (build 3790)
ORACLE
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - 64bit Production
PL/SQL Release 11.1.0.6.0 - Production
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TNS for 64-bit Windows: Version 11.1.0.6.0 - Production
NLSRTL Version 11.1.0.6.0 - Production
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pga_aggregate_target   0
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Fixed Size                  2114736 bytes
Variable Size            4630514512 bytes
Database Buffers          671088640 bytes
Redo Buffers               41013248 bytes
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hi_shared_memory_address 0
memory_max_target    5G
memory_target      5G
shared_memory_address 0
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lock_sga   FALSE
pre_page_sga     FALSE
sga_max_size   5G
sga_target      0
Question :
Why oracle.exe is taking 8G virtual; bytes, memroy target can not go beyond 5G. How to minimized the virtual byte in perfmon
Thanks in advance your time and help.

John, Thanks for the reply.
Please find the output of query
SQL> select pool,sum(bytes) from v$sgastat group by pool;
POOL         SUM(BYTES)
              915543216
java pool      67108864
streams pool 268503944
shared pool 2147494008
large pool     67108864
SQL>
SQL> select * from v$pgastat;
NAME                                                                  VALUE UNIT
aggregate PGA target parameter                                    671088640 bytes
aggregate PGA auto target                                         147564544 bytes
global memory bound                                               104857600 bytes
total PGA inuse                                                   533962752 bytes
total PGA allocated                                               810819584 bytes
maximum PGA allocated                                            1244466176 bytes
total freeable PGA memory                                          90243072 bytes
process count                                                           450
max processes count                                                     588
PGA memory freed back to OS                                      1.9883E+10 bytes
total PGA used for auto workareas                                  28210176 bytes
maximum PGA used for auto workareas                                39973888 bytes
total PGA used for manual workareas                                       0 bytes
maximum PGA used for manual workareas                                531456 bytes
over allocation count                                                     7
bytes processed                                                  2.6307E+10 bytes
extra bytes read/written                                                  0 bytes
cache hit percentage                                                    100 percent
recompute count (total)                                               72720
19 rows selected.
SQL>
SQL> show parameter _target
NAME                                 TYPE                             VALUE
archive_lag_target                   integer                          0
db_flashback_retention_target        integer                          1440
fast_start_io_target                 integer                          0
fast_start_mttr_target               integer                          0
memory_max_target                    big integer                      5G
memory_target                        big integer                      5G
pga_aggregate_target                 big integer                      0
sga_target                           big integer                      0
SQL> sho parameter sga_max
NAME                                 TYPE                             VALUE
sga_max_size                         big integer                      5G

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SAP R/3 Version: SAP 4.6C
Oracle Version: 10.2.0.4.0
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Fileset                                 Actual Level        Maintenance Level
bos.rte                                 5.3.8.0             5.3.0.0
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kernel release               46D
kernel make variant       46D_EXT
compiled on                  AIX 1 5 0056AA8A4C00
compiled for                  64 BIT
compile time                  Aug 17 2007 10:57:49
update level                  0
patch number                  2337
source id                     0.2337
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Processor Implementation Mode: POWER 6
Processor Version: PV_6_Compat
Number Of Processors: 4
Processor Clock Speed: 4208 MHz
CPU Type: 64-bit
Kernel Type: 64-bit
LPAR Info: 9 SWT_AMR_SADCB335_SAP_HA_PRI
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Good Memory Size: 15360 MB
Platform Firmware level: Not Available
Firmware Version: IBM,EM340_095
Console Login: enable
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Program buffer
                    abap/buffersize               850000     Kb
CUA buffer
                    rsdb/cua/buffersize               10000
Screen buffer
                    zcsa/presentation_buffer_area     20000000 Byte
Generic key table buffer
                    zcsa/table_buffer_area          100000000 Byte
Single record table buffer
                    rtbb/buffer_length               60000
Export/import buffer
                    rsdb/obj/buffersize               40000      kB
Table definition buffer
                    rsdb/ntab/entrycount          30000
Field description buffer
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Initial record buffer
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Short nametab (NTAB)
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Calendar buffer
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Roll, extended and heap memory     EM/TOTAL_SIZE_MB          6144     MB
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                    ztta/roll_first               1     Byte
                    ztta/short_area               1400000     Byte
                    rdisp/ROLL_SHM               16384     8 kB
                    rdisp/PG_SHM               16384     8 kB
                    rdisp/PG_LOCAL               150     8 kB
                    em/initial_size_MB               4092     MB
                    em/blocksize_KB               4096     kB
                    em/address_space_MB          4092     MB
                    ztta/roll_extension               2000000000     Byte
                    abap/heap_area_dia          2000000000     Byte
                    abap/heap_area_nondia          2000000000     Byte
                    abap/heap_area_total          2000000000     Byte
                    abap/heaplimit               40000000     Byte
                    abap/use_paging               0
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Oracle Parameter
Oracle Parameter Name     Value     Unit
SGA_MAX_SIZE          6192     MB
PGA_AGGREGATE_TARGET     400     MB
DB_CACHE_SIZE           0
SHARED_POOL_SIZE     960     MB
LARGE_POOL_SIZE          16     MB
JAVA_POOL_SIZE           32     MB
LOG_BUFFER          14246912
db_block_buffers          655360
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