Reduce memory usage SWAP

Hello, I have 4 instances Oracle 9i in a server on linux, which have 700 Mb of SGA each one, and the server have 4 Gb RAM.
When I reboot the server, this haven´t use of SWAP but after a time the SWAP memory arrive to 1.3 Gb, and I would like reduce this number.
How can I do this?
Thanks

Hi,
I have 4 instances Oracle 9i in a server on linux, which have 700 Mb of SGA each one, and the server have 4 Gb RAM.Is the gig left over allocated for PGA? Sizing multiple instances on a server is tricky, here is how I do it:
http://www.dba-oracle.com/art_dbazine_ram.htm
but after a time the SWAP memory arrive to 1.3 Gb, and I would like reduce this number.The trick is to allocate the RAM so that you use it all, but not so high that you see "page in" swap.
Where are you seeing swap?
I look at vmstat "pi", or page-ins:
http://www.dba-oracle.com/t_tuning_cpu_usage_vmstat.htm
Hope this helps . . .
Donald K. Burleson
Oracle Press author
Author of "Oracle Tuning: The Definitive Reference"
http://www.rampant-books.com/book_2005_1_awr_proactive_tuning.htm

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pci@0000:00:1e.0 bridge 82801AA PCI Bridge
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pci@0000:00:1f.0 bridge 82801AA ISA Bridge (LPC)
pci@0000:00:1f.1 storage 82801AA IDE Controller
pci@0000:00:1f.2 bus 82801AA USB Controller
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12236 Terminal 1.7% 0:01.45 3 99 433 5264K+ 49M+ 21M+ 419M+
12225 SyncServer 0.0% 0:00.15 2 50 290 3512K 41M 12M 88M
11248 WinAppHelp 0.0% 0:00.40 1 51 289 3208K 40M 11M 339M
11027 Skype 0.0% 0:19.47 31 313 865 46M 76M 88M 557M
10315 PrinterPro 0.0% 0:00.83 2 85 476 12M 51M 29M 423M
10313 launchd 0.0% 0:01.25 3 24 25 120K 296K 464K 18M
8626 QuickTime 0.0% 17:21.09 5 187 655 13M 67M 43M 486M
8556 DashboardC 0.0% 0:06.31 4 124 538 16M 58M 38M 436M
8555 DashboardC 0.0% 0:10.95 4 149 545 23M 58M 49M 444M
8534 Livestatio 16.8% 59:00.13 12 198 771 30M- 94M 62M 584M
8220 Mail 0.0% 0:43.91 27 323 968 24M 94M 80M 554M
2806 Python 0.8% 5:20.05 2 33 281 13M- 248K 14M- 36M-
2761 Transmissi 0.9% 2:49.17 21 270 773 20M 90M 56M 506M

About OS X Memory Management and Usage
Reading system memory usage in Activity Monitor
Memory Management in Mac OS X
Performance Guidelines- Memory Management in Mac OS X
A detailed look at memory usage in OS X
Understanding top output in the Terminal
The amount of available RAM for applications is the sum of Free RAM and Inactive RAM. This will change as applications are opened and closed or change from active to inactive status. The Swap figure represents an estimate of the total amount of swap space required for VM if used, but does not necessarily indicate the actual size of the existing swap file. If you are really in need of more RAM that would be indicated by how frequently the system uses VM. If you open the Terminal and run the top command at the prompt you will find information reported on Pageins () and Pageouts (). Pageouts () is the important figure. If the value in the parentheses is 0 (zero) then OS X is not making instantaneous use of VM which means you have adequate physical RAM for the system with the applications you have loaded. If the figure in parentheses is running positive and your hard drive is constantly being used (thrashing) then you need more physical RAM.

Memory usage problem on AIX 7.1

Hi,
We are running Oracle 11GR2 EE on AIX 7.1 and keep getting alerts on the pgchecks (memory paging).
The alerts are coming from another system monitoring tool (Hobbit), but our sys admins are telling us it is because we are overallocating memory.
In our case, we have an 8G SGA for the only database.
Then, we are running grid and ASM.
How can I check the actual (real) memory usage by individual processes of our Oracle database, our emagent (OMS agent), and for our ASM. In our case, we have 32G of Real Memory installed, and we should not be having a memory paging issue.
For the Oracle database, it is set for 8G.
NAME                                 TYPE        VALUE
lock_sga                             boolean     FALSE
pga_aggregate_target                 big integer 0
pre_page_sga                         boolean     FALSE
sga_max_size                         big integer 8480M
sga_target                           big integer 0For our ASM instance, it is set for 270M
SQL> sho sga
NAME                                 TYPE        VALUE
lock_sga                             boolean     FALSE
pga_aggregate_target                 big integer 0
sga_max_size                         big integer 272M
sga_target                           big integer 0

do as below (vmstat takes 2 minutes to complete)
bcm@bcm-laptop:~$ vmstat 6 20
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b   swpd   free   buff cache   si   so    bi    bo   in   cs us sy id wa
0 0      0 1347636 81396 1592120    0    0   264    22 382 651 8 3 84 5
0 0      0 1347664 81404 1592144    0    0     0    13 515 1028 4 1 95 0
0 0      0 1353136 81412 1592144    0    0     0    14 507 1021 3 1 95 0
0 0      0 1353012 81420 1592144    0    0     0    23 523 1033 3 1 95 0
0 0      0 1353044 81428 1592144    0    0     0    13 513 1026 3 1 96 0
0 0      0 1353044 81436 1592144    0    0     0    15 517 1045 3 2 95 0
0 0      0 1352920 81444 1592144    0    0     0    15 505 1012 3 1 96 0
1 0      0 1347448 81452 1592156    0    0     1    21 521 1038 4 2 94 0
0 0      0 1347448 81460 1592156    0    0     0    28 513 1030 3 2 95 0
0 0      0 1347448 81468 1592180    0    0     1    21 529 1053 4 1 95 0
0 0      0 1347200 81484 1592176    0    0     0    39 530 1067 3 2 95 0
1 0      0 1347200 81492 1592172    0    0     0    14 530 1058 3 1 96 0
0 0      0 1352796 81500 1592172    0    0     0    17 514 1034 3 2 95 0
0 0      0 1352796 81508 1592180    0    0     0    21 516 1049 6 1 92 0
0 0      0 1352764 81516 1592180    0    0     0    15 506 1024 2 1 95 1
0 0      0 1352252 81524 1592180    0    0     0    15 563 1090 3 2 95 0
0 0      0 1351836 81532 1592180    0    0     0    15 550 1066 4 1 94 0
0 0      0 1346768 81540 1592200    0    0     1    18 547 1111 4 2 94 0
1 0      0 1346152 81548 1592204    0    0     0    69 524 1059 3 2 94 0
0 0      0 1346472 81556 1592244    0    0     1    17 498 1012 2 1 96 0

Memory Usage And Hard Drive Activity Increase After Latest Upgrade

I have upgraded to Firefox 3.6.15 and latest Adobe Flash Player. Then i noticed that plugin-container started to take a lot of memory as much as Firefox itself totaling around 600Mb. Then i see hard drive activity intermittently slowing down my laptop and making it unresponsive for a short period of time. I have 50 tabs open. I have disabled Flash and since then plugin-container takes very little memory and i don't see consistent hard drive activity.
I need Flash and i don't want to disable it. Is there a solution to this?

I am seeking solutions for same problem. When playing simple online games such as solitaire my memory usage for the plug in container is 300-600 mb while FireFox may only be 80-120 (with several windows or tabs open of mostly text pages). If I disable Adobe add-ons memory usage is greatly reduced. If I understood correctly it is possible to disable the plugin container and run adobe via the old method and another user thought that would solve the problem. I do not understand how it would make a difference but if you havent found a solution you may want to try it. See these 2 threads in the Mozilla forum:
A question and brief explanation and how to disable plugin container in config
I've previously had problems with Adobe crashing Firefox . At least now with Adobe being in the plugin container Firefox does not crash along with it.
I have another issue - I can sometimes still hear the music from a game after I have exited the game and closed the window. I would like to know how to release the resources used by Adobe - kind of like FireFox's RamBack.
Well, good luck to you (and me!)

Problem with memory usage and CPU usage

Hello,
i have a problem with the memory usage and cpu usage in my project!
My application must run for more than 24 hrs. The problem is that the longer it runs the bigger is the memory and cpu usage!
It starts with ~15% CPU usage and ~70 MBytes memory usage. After ~ 24hrs the CPU usage is ~60% and the memory usage is ~170 MBytes!
After 3 days the CPU usage is almost about 70% and the memory usage is about 360 MBytes!
What can I do to reduce this huge recource usage?
Thank you!

Hi Pahe,
   I think the issue is memory usage, since CPU usage can increase due to greater memory requirements.
   Anyway, it's difficult to debug without seeing your code, can you post it (possibly for LV 7.1 compatibility)? Or just post a JPEG of the piece of code that can give problems...
   I guess you're appending data to an array instead of replace data elements, but I can't be sure...
   Have a nice day!
graziano

Reduce memory usage SWAP

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