Max Concurrent connections supported by UTL_HTTP

Hi,
Can anyone help me out to find how many concurrent connections can UTL_HTTP.REQUEST_PIECES support. Is there any parameter that governs max no.of connections? If so, pls post the parameter name.

Assaf: as always, thanks so much for the info!
When you say double-sided, do you mean a memory stick which has chips on both sides; as in 8 chips on each side?
I bought the Kingston memory one stick of 128MB PC100/PC133 which has chips on one side. I also bought the 256MB PC100/PC133 which has chips on both sides.
I currently have both these memory sticks in the MS 6119 and they appear to be working well. I am running Prime95 torture test just to make sure everything is working as it should be.
Currently I have the following memory in the MS 6119:
Bank 0 - the original PC100 128MB stick which has 8 chips on each side.
Bank 1 - the Kingston (KVR133Q/128R) PC100/PC133 128MB with 8 chips on one side.
Bank 2 - the kingston (KVR 133Q/256R) PC100/PC133 256MB with 8 chips on both sides.
The total is, of course is 512MB - and appears to be working just fine. Windows LOVES RAM :D

Similar Messages

Max concurrent connections

Coming back to a topic that was posted a few months ago with
an
additional question:
>I believe you mean to ask, "What is the maximum number of
>concurrent connections such as those used in loadMovie or
XML.load?"
>If this is what you're asking then there are no current
limits. However,
>the sending server may limit concurrent connections for a
single client
>to any number so the loads may fail if they exceed this
limit. The
>limitations are therefore server-based, not Flash based,
and they will
>differ from server to server.
My question:
While Flash doesn't enforce a limit, do any/all browsers
enforce
limits? If I wanted to load up 50, 100, 200 movies at once,
where if
anywhere would I be limited?
Also, it seems that, in a test program loading a bunch of
images from a server concurrently, I am not able to get more than
two at once. Is this purely a server issue?
-andy

Hi,
I imagine it does.
Also I guess if we are talking about just some random UDP traffic it would also mean that the default timeout for a connection would be 2min. The most usual UDP traffic would probably be DNS querys. In those cases I presume though that the UDP connections dont stay on firewall for long as long as the firewall sees the DNS reply.
But as I said if we are talking about some random UDP traffic that is allowed through the firewall I would guess it stays in the connection table of the firewall for a couple of minutes. So you might be looking at 1000 concurrent connections or even more?
I have once witnessed a single server sending so much UDP traffic that it reached the connection limit of an ASA5540 which is 400 000 concurrent connections.
- Jouni

ASA max concurrent connections

If I have a thousand nodes from the public each perform a UDP ping to a server behind the ASA, does each count as a concurrent connection?

Hi,
I imagine it does.
Also I guess if we are talking about just some random UDP traffic it would also mean that the default timeout for a connection would be 2min. The most usual UDP traffic would probably be DNS querys. In those cases I presume though that the UDP connections dont stay on firewall for long as long as the firewall sees the DNS reply.
But as I said if we are talking about some random UDP traffic that is allowed through the firewall I would guess it stays in the connection table of the firewall for a couple of minutes. So you might be looking at 1000 concurrent connections or even more?
I have once witnessed a single server sending so much UDP traffic that it reached the connection limit of an ASA5540 which is 400 000 concurrent connections.
- Jouni

Network.http.max-persistent-connections-per-server keeps reverting to user set 4

I didn't used to have this problem as far as I'm aware, but as of recently, I've noticed that if I try to download more than 4 of one thing at a time from the same site, it would fail. For instance, if I have up 5 web pages of streaming content, only 4 will load, the other 5th one will do nothing until I finish one of the others. Upon looking up some information on this, I saw that the network.http.max-persistent-connections-per-server is set at "user set = 4", and if I change that number to anything else, it corresponds. If I click to 'reset' the number, it goes to the default of 6 - which is still less than what it used to be. I used to not even have a limit on this as far as I'm aware, or if I did, it was well beyond 10 and that wasn't a product of me manipulating it.
What I'm asking is this:
1) How do I make this so it permanently switches to a higher number? Every time I reset it to 6 or I manually change the number to something higher, once I close it, those settings go back to 4.
2) Why is it reverting and not staying the way I change it?
3) What's the purpose of this and why is it just recently doing it when I haven't put any new add-ons or made any other refinements to Firefox that I'm aware of?
Any help would be appreciated

Two possible causes for it resetting to 4 that I can think of.
# You have an add-on handing that pref and that is resetting it to 4 when Firefox is restarted.
# That pref is set via user.js and that causes it to go to that value as Firefox starts.
http://support.mozilla.com/en-US/kb/troubleshooting+extensions+and+themes <br />
http://kb.mozillazine.org/User.js_file

Limit number of concurrent connection

is there a way for me to limit the number of concurrent
connections to the media server. my upload bandwitdh is about a meg
so having too many connections just kills the whole thing. i would
like to put a limit at 5 connections. is there a way to do
this?

well i am only using flash media server to displaying videos
and just that. the reason i went with media server vs. progressive
was fullscreen method. since flash doesn't natively support
fullscreen you have to open another browser in fullscreen with
javascript. the problem with that is it start loading from
beginning so i decided to go server that way it only has to buffer
and get to the same point without having to load the whole video up
to that point. Now i want to limit number people that can be
watching the video. if i get more that 5 connection the whole thing
slows down. i am not too familiar with server based connections so
i don't know how to limit the number concurrent connections.

Increasing max-streaming-connections-per-session has slow acknowledge response?

Our application is a Flex GUI with a WebLogic Server (BlaseDS) on a private network. We were originally using IE 6, but have upgraded to IE 8.
I am trying to use publish/subscribe messaging to monitor lengthy processes on the server and received incremental data. With 1 such process everything works fine. But we want to allow the user to subscribe to more than 1 message destination. So I increased the "max-streaming-connections-per-session" (default is 1) in the services-config.xml file
     <channel-definition id="process-notification-streaming-amf"
          class="mx.messaging.channels.StreamingAMFChannel">
          <endpoint url=https://{server.name}:{server.port}/{context.root}/messagebroker/streamingnotificationamf"
          class="flex.messaging.endpoints.StreamingAMFEndpoint"/>
          <properties>
               <user-agent-settings>
                    <user-agent match-on="MSIE" kickstart-bytes="2048"
                         max-streaming-connections-per-session="3" />
               </user-agent-settings>
          </properties>
     </channel-definition>
If we leave max-streaming-connections-per-session as the default value of 1 and try to subscribe to another message destination we get an error indicating limit has been reached:
     [BlaseDS]Endpoint with id 'process-notification-streaming-amf' cannot grant streaming connection to FlexClient with id '7FFC82DE-etc ' because max-streaming-connections-per-session limit of '1' has been reached.
     We upgraded to IE8 as documentation indicates IE8 allows for an increase of max-streaming-connections-per-session, where IE 6 is limited to 1. But increasing max-streaming-connections-per-session does not quite solve the problem. We have 3 consumers; consumer1, consumer2, consumer3. For each of these consumers, we add event listeners for MessageAckEvent.ACKNOWLEDGE and MessageEvent.MESSAGE.
     We call consumer1.subscribe(). When we receive the acknowledge message, we call consumer2.subscribe() (likewise with consumer3)
     The problem is it takes over 2 minutes to receive the acknowledge message from the call to consumer1.subscribe(). (With max-streaming-connections-per-session set to 1, the acknowledge message is received in a few seconds.)
     So, increasing max-streaming-connections-per-session removes the error about reaching a limit, but it appears to come with a cost of a big delay in a long delay on the call to subscribe? Or is there something we are missing?

I guess I will answer my own question. Hopefully this will be useful to someone else in the future...
The problem was coming from IE being limited to 1 connection by the registry. The solution can be found at:
http://support.microsoft.com/kb/282402
I manually performed the steps to update the registry, though microsoft provides a "Fix It"; MicrosoftFixit50098.msi
One other key element was to make sure to have kickstart-bytes="2048".

2000 concurrent connections

Hello,
Does Oracle support 2000 concurrent connections? What are the potential problems/bottlenecks? Memory (how much is required), network (TCP/IP), SQL*NET, etc...
Oracle states that shared server connection require less memory and permits greater scalability. Is it worth the extra configuration? How much memory is saved?
The OS can be Windows or Unix. Of course we are talking about 64 bit here.
Is there any documentation concerning this matter?
Thanks,
Mark

Thanks. Great post by Howard for resuming shared server vs. dedicated connection.
Concerning shared server connections and length of transactions: It is difficult to say what the length of our transactions are as I don't have any figures, all I can say is that we always ask developers to keep transactions as short as possible.
Does anyone have this type of implementation in production? I would still like to know of any other possible caveats or limitations.
Thanks,
Mark T.

Cisco IPS Concurrent session support in ips 4260 and 4270 sensor

I am wondring that no document from Cisco IPS data sheets mention the concurrent session support in Cisco IPS 4200 series sensor. I am looking forward to any one who can advise about the subject.
Thanks
Nouman

Hi.
with IPS devices it's difficult to measure performance by # of connections per second since several factors count to the performance limit, including:
1- packet size.
2- object sizes per transaction
3- transactions per second
4- signatures enabled
5- features enabled
that why public documents try to make it more realistic by mentioning the transactional performance.
here is a link mentioning concurrent connections for 4270:
http://www.cisco.com/en/US/prod/collateral/vpndevc/ps5729/ps5713/ps4077/prod_white_paper0900aecd806e7283.html
although the link mentiones 100k and 200k, but we've seen situations where we had a lot more connections with a smaller amount of signatures enabled.
for the 4260 the public document only mentions the transactional performance.
Regards,
Fadi.
If this answers your question please mark the thread as resolved.

Anybody know the maximum channel, concurrent connection limit

Anybody know the maximum channel that can be set and the maximum concurrent connection that listener can support for WebSphere 6.0 Solaris.
One more question, please correct if I'm wrong; in order to set above value, I have to modify qm.ini as below:
TCP:
Port=1414
KeepAlive=YES
ListenerBacklog=800 --------> for maximum concurrent connection that listener supports
Channels:
MaxChannels=1000 ----------> for maximum channel for QManager
MaxActiveChannels=1000
Every suggestions would be appreciated.

Not really sure what you mean by "half-closing" and the question you're asking. Can you clarify?

Kernel parameter for large concurrent connections database.

Hi,
Does any one have suggestion about kernel parameters we have to modify for large concurrent connections database (about 20000 concurrent connections) ? We would like to use Sun M8000 as our database server. Oracle installation guide indicated many parameters and values, but it seems ok for general database, not the one we need. Please somebody help us. Thanks !

I certainly don't have any idea where the 150G memory usage for 20000 concurrent users come about. That's 7.5MB per user session.
The session memory usage is depends on Oracle version, OS , Database configuration and application behavior etc..
From following query we can tell, average session memory usage is around 1.5M in normal usage on 10g linux platform.
It could go up to 20-30M if user session doing large data manipulation.
SYS@test > l
1   select value, n.name|| '('||s.statistic#||')' , sid
2    from v$sesstat s , v$statname n
3    where s.statistic# = n.statistic#
4    and n.name like '%ga memory%'
5*   order by sid
SYS@azerity > /
     VALUE N.NAME||'('||S.STATISTIC#||')'        SID
    486792 session pga memory max(26)             66
    486792 session pga memory(25)                 66
    225184 session uga memory(20)                 66
    225184 session uga memory max(21)             66
    225184 session uga memory max(21)             70
    486792 session pga memory max(26)             70
    486792 session pga memory(25)                 70
    225184 session uga memory(20)                 70
    225184 session uga memory(20)                 72
    486792 session pga memory max(26)             72
    225184 session uga memory max(21)             72
    486792 session pga memory(25)                 72
    486792 session pga memory max(26)             74
    225184 session uga memory(20)                 74
    486792 session pga memory(25)                 74
    225184 session uga memory max(21)             74
......Aggregate by SID
1   select sum(value),sid
2    from v$sesstat s , v$statname n
3    where s.statistic# = n.statistic#
4    and n.name like '%ga memory%'
5    group by sid
6*   order by sid
SYS@test > /
SUM(VALUE)        SID
   1423952         66
   1423952         70
   1423952         72
   1423952         74
   1423952         75
   1423952         77
   1423952         87
   1423952        101
   2733648        104
   1423952        207
23723248        209
23723248        210
   1293136        215
   7370320        216
.........

Limit of Concurrent Connection to a Datasource

I have an env to generate report concurrently.
The datasource is a SQLServer2008.
Can I limit the numbers of Concurrent Connection to the datasource in SSRS?

Hi Jiulidaji,
Thank you for your question.
I am trying to involve someone more familiar with this topic for a further look at this issue. Sometime delay might be expected from the job transferring. Your patience is greatly appreciated.
Thank you for your understanding and support.
Best regards,
Qiuyun Yu
Qiuyun Yu
TechNet Community Support

How to limit max IMAP connections in mail.app?

Hi folks,
due to Mailserver configuration limitations from Provider side like courier-imap settings "maxperip" = 4, some (like me) may have problems to use or connect more than one imap-account to the same server in mail.app.
In thunderbird you have the option to configure the max open connections per imap-account. If set to 1 connection, i'm able to use 4 imap-accounts.
But how to configure this in mail.app???
Thanks in advance,
paranoja

oh, as i found this seems to be an unfixed an verry old problem.
http://discussions.apple.com/message.jspa?messageID=5820548
http://discussions.apple.com/thread.jspa?messageID=6204843&#6204843
It's really a shame that apple didn't fixed it since the problem is from 2007!!!
It seems that there was a key "CacheOveraggressively" in com.apple.mail.plist in earlier versions, but i can't find it there with Version 3.5 (930.3)!
Seems that the only real solution for now is to use thunderbird......
P.S.: Mail in IPodTouch has of course the same Problem!

Does Max threads in Viusal Admin overide Max concurrency in Channels...

Hi All,
Here are the settings for no of JDBC threads in our Java Visual Admin:
AFWCall 10
AFWRecv 5
AFWRqst 10
AFWSend 5
JDBC_http://sap.com/xi/XI/SystemCall 5
JDBC_http://sap.com/xi/XI/SystemRecv 5
JDBC_http://sap.com/xi/XI/SystemRqst 5
JDBC_http://sap.com/xi/XI/SystemSend 5
Now the issue is that even if I put Max concurrency as 1 or 5 in JDBC adapter, I see 5 messages with status 'Delivering' at one time.
So does that mean Max threads in Viusal Admin overide Max concurrency in Channels
Pls advice...on this...
Regards,
XIer
Edited by: XIer on May 14, 2008 2:16 AM

Hi All,
Here are the settings for no of JDBC threads in our Java Visual Admin:
AFWCall 10
AFWRecv 5
AFWRqst 10
AFWSend 5
JDBC_http://sap.com/xi/XI/SystemCall 5
JDBC_http://sap.com/xi/XI/SystemRecv 5
JDBC_http://sap.com/xi/XI/SystemRqst 5
JDBC_http://sap.com/xi/XI/SystemSend 5
Now the issue is that even if I put Max concurrency as 1 or 5 in JDBC adapter, I see 5 messages with status 'Delivering' at one time.
So does that mean Max threads in Viusal Admin overide Max concurrency in Channels
Pls advice...on this...
Regards,
XIer
Edited by: XIer on May 14, 2008 2:16 AM

DB CONNECT support Hyperion database(Essbase)

Hi,
Does DB CONNECT support Hyperion database(Essbase) for SAP BW 3.5/7.0.
Regards
CSM Reddy

Hi,
assuming that you talk about ABAP DB CONNECT, this is not the case. From ABAP, SAP supports at maximum secondary connections to databases that are also supported by SAP as SAP databases (Oracle, the three DB2s, MSSQL, MAXDB).
You also need to be aware that not every OS on your application server is able to connect to every database listed above. In case of SAP on iSeries, you need to have a Windows Appserver to be able to connect against most other databases supported by SAP.
For more details about ABAP multi-connect refer to SAP note 323151, or the iSeries note 445872.
However, the JAVA part of the WebAS provides means to open secondary connections against any database which support a JDBC driver. The BW UDI connector (which uses that ability) might also support the Hyperion database. I'm not familar with their plans.
Hope that helps.
Dorothea

50000 concurrent connection

Do you know if weblogic application server can handle 50K concurrent connection? I have to make the decision if it is possible to use weblogic application server to do. If so, how many servers do i need (just an estimation is ok).

We are in production with a similar configuration (as of Feb 1).
We have two outstanding issues
1. Multicast DOES NOT WORK when dual NICs used/enabled
2. Testing using as few as 25 users (via webload, RSW and Loadrunner) causes
failures and timeouts.
The same test on a single server (cluster of 1) works fine!
App Servers
NT 4, sp6a
5 dual 650 IBM Netfinity 4000R w/512 mb
WLS 5.10 sp8
Web Servers
NT 4, sp6a
2 dual 650 IBM Netfinity 4000R w/512 mb
IIS proxy
cisco local director in front of web servers.
Michael Girdley wrote:
Sure. We regularly run benchmarks that include 10,000 simultaneous
connections. To do so, we use a cluster of 10 400 MHz CPUs running Windows
NT.
Michael Girdley, BEA Systems Inc
Learning WebLogic? Buy the book.
http://www.learnweblogic.com/
"kc" <[email protected]> wrote in message
news:3a63f01d$[email protected]..
Do you know if weblogic application server can handle 50K concurrentconnection? I have to make the decision if it is possible to use weblogic
application server to do. If so, how many servers do i need (just an
estimation is ok).--
/\/\i|<e
Mike Kincer
Solutions Developer/Engineer
Atlas Commerce "ebusiness evolved"
Office phone: +1-607-741-9988
mailto:[email protected] [http://www.atlascommerce.com]

Max Concurrent connections supported by UTL_HTTP

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