Network Performance in Oralce 10g

when user want to insert or update any record then its activity goes to 90% or above and it takes time to insert or update the record. how can i resolv this issuse.
any one help me.
Thanks.

Streams AQ: qmn coordinator idle wait     31     16     42598     1374.12     425976281     989870553     2723168908     6     Idle
Streams AQ: qmn slave idle wait     15     0     41599     2773.27     415990747     1830121438     2723168908     6     Idle
Streams AQ: waiting for messages in the queue     83     83     41478     499.73     414776290     3955192389     2723168908     6     Idle
jobq slave wait     134     131     39906     297.8     399055017     782339817     2723168908     6     Idle
Streams AQ: waiting for time management or cleanup tasks     7     4     3778     539.71     37779540     3702640206     2723168908     6     Idle
class slave wait     3     3     1499     499.54     14986144     1055154682     2723168908     6     Idle
Streams AQ: qmn coordinator waiting for slave to start     2     1     500     249.95     4999066     1565566389     1893977003     0     Other
LGWR wait for redo copy     1     0     0     0     1     4266849434     1893977003     0     Other

Similar Messages

PC and Network Performance

Hello:
The City of Detroit is planning to upgrade to 11.03 or 11i. We are looking for network and PC performance minimums/maximums to support as a minimum 11i and any known future upgrades coming but not released. Is there a publication/white paper that would provide information, not only on the above, but would be the expected performance benchmarks for AP, AR, PO, GL, Projects & Grant HRMS, OTA, and FA? At the moment we are on 10.7 and interface with EMPAC. Users are spread over the City in numerous locations. We must assume that the user will have other non-Oracle apps open such as Office and GroupWise.
Thanks,
J
Gerald R J Heuer
313-224-2109
Beeper: 313-275-6714
F:313-224-9342
[email protected]
1232 Coleman A Young Municipal Center
2 Woodward Ave
Detroit MI 48226

The information is available in Appsnet under the 'Technology' Tab and you would need to look at some of the White Papers - including one with the name 'Nothing but Net' and the Network Performance Presentation.
null

Solaris 9, V210, bge0 network performance issue

Setup: Solaris 9, V210, single network (bge0).
ndd shows: 100FD
LAN Switch set to 100FD
Network performance bad, in fact very bad. System shows upwards of 19% collisions with netstat -- odd since FD should have no collisions. Network folks have checked switch settings and they are 100FD. I have checked more than once that ndd returns 100FD.
I am not sure what to check next. Thanks for any help you can provide in what to check next or pointing me to something I have missed.
Thanks - Wes

Means your system and the switch aren't playing nicely.
Anytime a Sun internal is showing collisions (don't care what ndd says), it means the interface is probably flip flopping between FD and HD (causing your collisions). The flip flops are causing performance to be MUCH worse then just the collisions ever would.
You might try a new factory made CAT5 network cable.
Then if that doesn't work, you should try using ndd to force the bge interface to 100FD and forcing the switch to 100FD.

Regarding Coherence Network Performance test?

Hi,
We have performed the datagram tests for two servers that we have using the coherence datagram test scripts.
We have shared the results that we got after a run of 60 – 65 seconds each for the unidirectional and bidirectional tests.
Please refer to
https://docs.google.com/spreadsheet/ccc?key=0Atn1ma-myp6ndEc0THBKRTFDSnBaN0NqV1o1Ym1jRnc#gid=0
for the results.But we want to understand from these results if this performance is under the agreeable range, for which we don’t have any absolute references with us.
Can someone suggest if this network performance is good enough or if there are any problems based on these statistics?
Quick help much appreciated. Thanks in advance.
Edited by: saiyansharwan on Jan 11, 2012 5:40 AM

Appreciate your response much. For your reference I am putitng the details on the excel sheet right on the reply.
For unidirectional test
=============
Test Parameters -
1     Buffersize     89 (Changed as exception occurred due to OS buffer size limitations)
2     Packet size     1468 (default size adopted)
3     Command on Server A     sh datagram-test.sh serverb
4     Command on Server B     sh datagram-test.sh -rxBufferSize 89 ( to limit the receive buffer size assumed by coherence to match with the actual value in the OS.)
Results:
Server A as publisher and Server B as listener
Publisher Details     Byte transfer rate for Server A     111 MB/sec
     Packet transfer rate for Server A     79550 packets/sec
Listener Details
Sl.No     Parameter     Server B values
1     elapsed     61547ms
2     packet size     1468 packets
3     throughput     111 MB/sec
          79614 packets/sec
4     received     4900000 of 4902366
5     missing     2366 packets
6     success rate     0.9995174
7     out of order     0
8     avg offset     0
9     gaps     802
10     avg gap size     2
11     avg gap time     0ms
12     avg ack time     -1.0E-6ms; acks 0
For Bidirectional test
============
Test Parameters -
Sl.No     Parameters     Values     Remarks
1     Buffersize     89     Changed as exception occurred due to OS buffer size limitations
2     Packet size     1468     default size adopted
3     Command on Server A     sh datagram-test.sh -polite serverb -rxBufferSize 89     started on polite mode to wait till it receives data
4     Command on Server B     sh datagram-test.sh servera -rxBufferSize 89
Results:
Publisher Details
     Byte transfer rate for Server A     114 MB/sec
     Packet transfer rate for Server A     81367 packets/sec
     Byte transfer rate for Server B     84 MB/sec
     Packet transfer rate for Server B     59768 packets/sec
Listener Details
Sl.No     Parameter          Server A               Server B
1     elapsed          65037ms               64932ms
2     packet size          1468 packets          1468 packets
3     throughput          107 MB/sec               65 MB/sec
               76618 packets/sec          46202 packets/sec
4     received          4982987 of 5050738          3000000 of 3001389
5     missing          67751 packets          1389 packets
6     success rate          0.9865859               0.9995372
7     out of order          0               0
8     avg offset          0               0
9     gaps          20097               119
10     avg gap size          3               11
11     avg gap time     0ms               0ms
12     avg ack time          1.149157ms; acks 309602     1.169717ms; acks 1017381
As you may observe, unlike the test you performed, bidirectional tests are showing much better success rate in this case.
But what I was looking for was some standards to compare against to decide if these statistics indicate good network performance.
Any suggestions?
Best Regards.

Network Performance Troubleshooting?

Greetings all,
I have a new Sun X4240 server installed as an enterprise backup media server and it's suffering terrible network performance to our new Exagrid disk storage backup appliance. The shares on the Exagrid are mounted as NFS3 shares on the server. If I cable the server directly to the Exagrid appliance, I get a reasonable 450-500 Mb/s on a simple copy from local disk to the NFS share. When I connect them back into our Cisco switch, the performance on the same copy drops to well under 20 Mb/s. A Windows server on the same switch sending traffic to CIFS shares on the Exagrid is performing quite well.
Does anyone have any ideas how to start troubleshooting this problem? Any other recommendations? Anything will be very welcome!
Sun X4240, Solaris 10 05/09 X64
Cisco Catalyst 4506, Supervisor II+ version 12.2(46), (cat4500-ipbasek9-mz.122-46.SG.bin)
WS-X4548-GB-RJ45 (48 port 10/100/1000BaseT module)
Many thanks,
Tim

I tried forcing the port settings but that still didn't work. In the end it turned out to be a problem with the code on the Cisco router. We tried a different, much cheaper Cisco router and it worked great.

X6450 network performance issue

We are seeing a network performance issue using the Blade 6000 chassis with two (10x 1 Gbps Ethernet) NEM modules. The x6450 blades in the chassis have Solaris 10 u7 installed. In our tests, we used two blades in the following manner: each blade had only one network interface connected (and plumbed in the OS level) and each blade was connected to a different NEM. Both blades were connected to the same gigabit switch. There were two other test systems (x2270-s) also connected to the same switch. We ran the following tests:
both the application client and server are on the same blade (i.e. application is using the loopback network interface): n operations/second (the number here is irrelevant, only the relation to other test numbers are relevant)
application client on first blade, server on second blade: 0.77 x n operations / second (i.e. 23% degradation)
application client on blade, server on x2270: 0.77 x n operations /second (i.e. 23% degradation)
application client on x2270, server on blade: 0.75 x n operations /second (i.e. 25% degradation)
We ran similar tests with the x2270. We did not see any difference between running the test on the loopback interface vs. running the test between two x2270-s.
Is there a known issue with these network modules or their drivers?
Edited by: kbertold on Jul 14, 2009 11:54 AM

Just use a high interval and you see how much throughput you have in that time
example: dlstat vnet1 120
Best regards,
Marcel

Windows 7 file copy and overall network performance

I have noticed some major problems with network performance when trying to access files stored on our NSS based file servers when using Windows 7 Pro.
Our file servers are OES2 SP1 and SLES 10 SP3. I did not have this type of problem when I was on Windows XP. I am currently using the Novell Client 2 SP1 on Windows 7. I did have the BSOD referring to the nccache.sys file. I read a TID that said to turn off file caching, but since doing that it is painfully slow.
Any help in advance will be greatly appreciated. If I should post this elsewhere please let me know as well. Thanks again.

Originally Posted by mrosen
On 27.01.2011 20:06, dshofkom33 wrote:
>
> Our file servers are OES2 SP1 and SLES 10 SP3.
I sure hope that's incorrect, as OES2SP1 runs on SLES10 SP2, not 3.
Also, you should really be running OES2 SP2 at aleast (SP3 just having
been released).
> I did not have this type
> of problem when I was on Windows XP. I am currently using the Novell
> Client 2 SP1
No IR5?
> on Windows 7. I did have the BSOD referring to the
> nccache.sys file. I read a TID that said to turn off file caching, but
> since doing that it is painfully slow.
Caching doesn't have any noticeable or even measurable performance
impact on more copying of files, as caching doesn't come into play here.
It can only have an effect on repeated activity on the same file, which
fily copying by design isn't.
> Any help in advance will be greatly appreciated. If I should post this
> elsewhere please let me know as well. Thanks again.
This would probably be better suited for the client forums, but you need
to post more information. Being "Painfully slow" isn't a technically
precise nor helpful description.
CU,
Massimo Rosen
Novell Product Support Forum Sysop
No emails please!
Untitled Document
You are correct with our Server installations. Sorry for the mistype.
As far as my client goes. I will try the IR5 client version to see if that is any better.
As far as being "Painfully slow" i mean it was taking hours to install a product from a .ISO hosted on one of our NSS mapped drives. It would take 15 minutes to copy a 3MB file wile the .ISO was installing. It took even longer to try to copy the file down. I had no problems with any of the forementioned when running on Windows XP SP3 with client 4.91 SP5. What other details do you need?

Xserve G5 Network Performance Questions.

Hello,
I have the latest 2.3Ghz Xserve G5 and was wondering what the optimal configuration would be for the best network performance. The unit seems to come with a couple of GB Ethernet interfaces but would a Fibre connection improve bandwidth at all? Currently this unit has direct access to a layer3 managed switch but is GB Ethernet more limiting than a fibre connection into the same switch and is a Fibre network connection possible on this unit?

Are you talking gigabit ethernet over fiber vs. gigabit ethernet over copper? Or Fiber Channel?
There's no significant difference between gigabit ethernet over fiber vs. over copper. There are some minor issues (such a a lower propagation delay in fiber vs. copper) but over short distances it's not relevant.
There are Fiber Channel cards available, but they're usually used for connectivity to storage systems (arrays, backup devices, etc.), not host-to-host connectivity.
Attaching a fiber channel storage array (such as the XServe RAID woul dhave a trickle-down effect on your network (there would be less overhead reading and writing data to disk therefore data can be pushed or pulled from the network more quickly), but it's not going to be a huge difference.
For maximum impact you could consider either trunking (combining multiple ethernet ports into a larger, virtual port) or moving to 10GbE (10 gigabit ethernet), although that will require new switches as well.
You might want to check out Small Tree, they're well versed in high performance networking and sell a range of multi-port gigabit ethernet cards as well as 10GbE solutions.

DMVPN - improve network performance

Hi All,
We have a dual hub dual dmvpn cloud network running EIGRP or about 50 and 100 sites in the coming future.
I have configured it in a way for 25 spokes to designate hub1 as primary and the other 25 spokes to designate hub2 as its primary link.
To load balance.
I need some help on sugguestion or recommendations on how to improve its network performance.
This is to anticipate queries by customer running systems&apps complaining why is the link too slow after implementing dmvpn
Is there any parameters that can be fine tuned to help increase its performance?
Please advise.
Thanks

Hello, I know this thread is old but it is exactly relevant to what i have now. We have implemented the dual hub dual dmvpn solution over the last year on our remote sites. The head ends are 7200s w/C7200P-ADVSECURITYK9-M, Version 12.4(24)T3 and the remotes are 1700s (slowly being replaced with 1800s) and 1800 series routers. there are about 60 sites, most of them riding over Comcast cable (preferred) or Verizon DSL. Many of our sites have both, where comcast is primary and DSL is secondary, so on these sites there are 4 tunnels. Our connections are getting very slow. For instance, at one site they have paid for 50mb cable connection, which, when plugged directly into the cable modem, reaches those speeds. When going through the tunnel back to our core, where we have mutiple GB ISP connections out to the internet, they are getting 2mb download speeds. Actually, they don't even have to be going out to the internet, just hitting our internal servers in the core is slow for them. We started testing multiple sites and it seems all of them are getting very slow compared to the service they have. In looking at the troubleshooting options available you listed above, I am very curious about making sure none of the devices are oversubscribed. Since we have no spoke to spoke connections I am assuming that this troublshooting should be done on the 7200s. What commands would be good to run to check for oversubscription on the 7200s regarding CPU and crypto accelerator? Also, when you mention QoS, where does this get applied? I am familar with manual QoS config for voice and video, but how does it relate to VPN? Is there anything else i can look at/modify that will help alleviate the slowness of these tunnels? Any help would be greatly appreciated!!
Thank you,
Noel

Oralce 10g R1 - Ora-12541 after updating Windows 2003

Hi Experts
We are using Oralce 10g On Windows 2003. Today we have virus problem and we removed virus and did "Windows update"
Now when trying to open the sql getting error "Ora-12545"
Kindly check and help urgently.
Tx
G Selvam

Corolus G wrote:
HI
THnaks for reply,
But i did not change any parameter at allMaybe you didn't knowingly change any parameters, but you are running this on Windows. To paraphrase Forest Gump, "My momma always said Windows is like a box of chocolates. You never know what you are going to get." My team and I just finished spending three hours of troubleshooting an application when "we didn't change anything" -- except that a Windows update was pushed to the app server ....
If Oracle says "target host does not exist", I'd take Oracle's word for it.
So how do you go about chasing down ora-12541? Start with your names resolution - usually tnsnames. What is listed for the HOST= parameter of the entry in question? Is it listed as a server name or ip address? Can you ping it?
From the client machine please
1) show us the contents of your tnsnames.ora file
2) open a command prompt (cmd.exe)
3) give the command "set | sort"
4) give the command "tnsping <mysid>", where "<mysid>" is the tnsnames entry used to identify the database.
Copy all of the above - commands AND responses, and paste it back here.
Kindly check and help urgentlyWe can't check. After all it's your system. All we can do is suggest what you should check.
And there is no "urgent" here. This is a forum of peer volunteers.
"Urgent" means one of two things -
1) people are dying, or
2) you have a customer-facing, revenue-producing production system that is down.
(And to get some perspective on the second case, keep the first in mind.)
For the first, you call whatever civil emergency service seems appropriate.
For the second, you open an SR with Oracle - which requires a paid-up support contract. For them to consider your problem "urgent", you will need to demonstrate that your problem falls under item #2.
You don't have a support contract? Now you know the exact dollar figure that your company places on the data.

Hard drive and network performance

Can someone give me the intuitive, if not mathematic, side to where a hard drives performance becomes a bottleneck in network performance?
For example, say a given internal hard drive in a computer has a read/write of 40MB/s = 320Mbps. This is 1/3 the bandwidth of a gigabit ethernet cable, assuming everything works like it should.
So when you are downloading from your big RAID 5 file store on the gigabit network, to your local desktop (the hard drive that read/writes at 320Mbps), how do you ever utilize the full gigabit ethernet connection?
Just seems to me like the drive cache would be constantly full if you are downloading a large video file or such.
So what obvious thing am I missing?
Thanks

The simple answer is that you don't. At least not in this scenario.
As you've correctly surmised, the slower components are going to limit your throughput, but the disk speed is only one of several factors. Network latency, TCP/IP packet overhead and more will all contribute.
So you'll rarely get true gigabit throughput on file transfers. 300-400 mpbs on a gigabit ethernet connection is typical.
Where you can and do get more is on memory-based transfers - data in one systems's RAM (or cache) being copied to another system's RAM (or cache). That's why switches and routers can handle line-speed throughput - they get a packet on one interface and send it out another, never having to think about it again (oversimplified, of course).

Network performance transferring to Apple TV

Can anyone tell me why I can only transfer from iTunes to my Apple TV at 1.1Mb when I have 5GHz N Network? I've had Apple TV for years and it's the bain of my life getting stuff from iTunes to it. I've tried the Ethernet Power Plugs, several routers and nothing. They all take forever. I've now got the brand new Airport Extreme and still rubbish. I can transfer a file from my iMac to my Macbook in the same area of the house at 30Mb/sec (still under what it should) but as soon as I transfer to Apple TV I get an appalling 1.1Mb. It takes almost an hour to transfer an HD movie.
I use iStat to monitor network speed in case anyone is wondering how I know the speed.

Ok, I think we need to end this now. 9Mb/s is not the limit because I can copy from my iMac to MacBook through my new Extreme using N on 5GHz at 28-30Mb/s so your statement of 9Mb/s being the best I can expect is completely inaccurate for my set-up. I repeat, I also get 28Mb/s when accessing the Internet from my wireless router (48-49Mb/s if I plug directly in or place my MacBook a few feet from router) so I'm obviously getting better than your theoretical maximums.
However, according to your last post you are saying Apple have placed an N card into the Apple TV and then limited it. Well if that is the case then that would explain it but the figures you are quoting for the network performance does not apply to my network.
I've looked into several websites about the speeds and most say that you should in most cases get 150Mbps and more/less depending on the router and environment you are operating in. I also use an Airport Express to extend my signal to try and drag every ounce I can out of mine. I've never claimed that I get the maximum from my router, just the figures that iStat are kicking out while testing. My beef has always been that for some reason, transferring data to Apple TV is significantly lower than to any other device on my network.

User managed backup and rman oralce 10g

hi guys
what are the enhancement of user managed backup and rman in oralce 10g
would u pls tell me in understandable manner
thanks in advance

Hi,
what are the enhancement of user managed backup and rman in oralce 10g
would u pls tell me in understandable manneRefer below link
http://dbataj.blogspot.com/2008/05/rman-versus-user-managed-backup-part-i.html
Hope helps.
Regards,
X A H E E R

Dismal Network Performance

Hello,
I have a brand new (one week old) Mac Mini. It is able to see/connect to the wireless network just fine - however packetloss runs in the 40-60% range and ping times were well over 500ms. After experimentation I decided that the location of the Mini was not desirable and purchased a Linksys 802.11n Wireless Ethernet Bridge (aka the gaming adapter) to use. The Bridge is connected to the mini via an Ethernet cable to the Mini's network port. This configuration resolved the packet loss, and I see strong signal back to the wireless router - however network performance is still dismal (200 KBps file transfers localy to the Mini). MacBook, MacBookPro, Dell Laptop are all using the same wireless network and can transfer files without problem (2-4 MBps) even when placed in the same location as the Mini.
Reading through the forums there were some hints about disabiling IPv6 which I have done. I cannot imagine this is OSX specific given the other Macs on my network... which only leaves the Mini, which is even stranger given the performance issues on both the Wireless and Wired network interfaces.
What else should I look at? Is this just a "bad" box?
Thanks in advance,
Max
Specific Details
Mac Mini (New)
OS 10.5.8
Airport Extreme Basestation
I have a brand new (one week old) Mac Mini running 10.5.8

I have the exact same issue. I just moved into a new home and my Mac Mini doesn't pick up the network very well at all. To solve this issue, I have to buy a separate usb "N" wifi adapter to use instead of the built in airport card for the fix ($35 at NewEgg.com).
http://www.newegg.com/Product/Product.aspx?Item=N82E16833166025
The Mac Mini has horrible reception for all wireless frequencies at my house with (b/g/n). I'm using a crappy Dell running XP with a usb "G" adapter sharing it's wired ethernet to my MacMini to access the internet now through a linksys WRT54G. I bought the AirPort Extreme Base Station to try to use the "N" speeds with all the great reviews I've read about it lately and it works just as bad with the linksys WRT54G using the Mac Mini. My "MacBook" performs EXCELLENT with the linksys and the apple router. My junky dell performs EXCELLENT with both routers also. Every computer in the house (4) loves either router except the poor Mac Mini. I have moved every desktop and laptop to where my Mac Mini exists and they all get great reception (EXCEPT THE MAC MINI).
Conclusion:
MacMini: Very Bad wireless reception
MacBook: Best wireless reception of all computers with both routers.
Dell w/Netgear wireless "G" adapter: Good reception where Mac Mini is located.
IBM NetVista: Great Wireless Reception on "G" network with Linksys
HP Tower of somekind: Great Wireless Reception on "G" network with linksys.
With the Airport Extreme "N" and the Linksis "B/G" WRT54G the Airport smokes it. Plus the shared harddrive and printing is awesome.

Network Performance Parameters

Hi All,
Hi All,
I need your advise on following point:
1.     To measure network performance parameters (Availability, Packet Drop, Latency, and Jitter & Throughput) through NMS on Cisco device, what commands need to be configured on Cisco devices?
2.     Is it through IP SLA commands, does it require SNMP RW commands to be enabled instead of SNMP RO command?
3.     What activity would be required at NMS to fetch the data from Cisco device so as to generate performance reports from NMS tool? Is it walkthrough? What impact this activity will have in production environment to re-discover the elements in NMS?
Please revert.

If you are using ciscoworks, you can use IPM to do this. you only need to configure snmp ro and rw strings on the cisco device.
IPM does a set and get to get the IP SLA information from the routers.

Network Performance in Oralce 10g

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