This is a very complicated issue and nd 3.x and nd4.x are different.
The dyna channel thing is only for nd 3.x and is equavalent to the number of projects
you can run at any one time.
If your applications have very simple pages and user can get in and out in less than a
second, one dyna channel will be good for many users (10 or more).
If you have an application which uses a lot of resources and takes a long time to
process a page, then you have a problem.
For example if your page do a select * and returns 5000 rows, using a typical oracle
database on nt it will take about 15 seconds.
(even if you only display 30 rows at a time nd still gets all 5000)
All that 15-16 seconds one copy of the project is being used and no one else can use
it.
In ND 4.x the number of user license is also not straight foreward.
If I open 10 browsers and each access the same ND server but 10 different projects, it
will use up 10 license and not 0ne for 5 minutes.
The reason is that ND counts the user in 5 minute intervals.
(In real life test that I have done I found out that this is somewhere between 1 to
2.5 minutes.)
You can run out of licences real quick if you have a lot of small projects ad user
long on to more than one at a time.
"Roger Feeley" <[EMAIL PROTECTED]> wrote:
>There are several considerations:
>1. You may need to ask ND for a production license. When I first got my
>software, I had a development license with only one dynachannel ( I was
>entitled to 3). I had to ask for the production one.
>
>2. In the 3.12 model, someone at ND made a determination that 10
>dynachannels (concurrent db connections) could support 10x10 users. This
>ratio was based on experimentation. I was licensed for 35 users and had 3
>dynachannels. As it was explained to me, you could actually have many more
>than 100 users connected with a 100 user license but the server would run
>crappy. This seems sort of wierd, but it is actually pretty handy. As your
>site grows, your customers are not rejected. Service declines and you get
>indications in the log that it is time to buy more licenses. You send money
>to ND and everybody is happy again.
>
>3. There is a field in your license called "Exceed Action" that you can
>check out. It tells the server what to do when you have exceeded your
>maximum licenses. It can reject the connection (very bad) or wait until a
>dynachannel becomes available and then gripe about it in the log file.
>Check this out with ND support. I forget which value is which.
>
>I suggest that you call ND support and check it out. They are very helpful
>and will explain this far better than I did.
>
>Hope this helps,
>Roger Feeley
>Bridge Information
>
>
>Beaudreau, Marilyn <[EMAIL PROTECTED]> wrote in message
>[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
>> We have an application that is running NDV3.1.2 with a global license. In
>> viewing the license key from the System Manager it states that we have 10
>> DynaChannels. In our ndlog file we're getting an error that our max
>number
>> of licenses is 10! A Global license is suppose to allow up to 100
>> concurrent users - not 10! We're having a large number of users unable to
>> connect to our system.
>>
>> Does someone out there have a good handle on DynaChannels vs Licenses etc?
>>
>> thx,
>> - Marilyn
>
>
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