RWI 00239 The server has reached the maximum number of simultaneous connections

25 May, 2007 – 1:30 pm

Once again on the topic of performance testing Business Objects, when executing a benchmark for a web intelligence report with goal being to see how many concurrent users it could support, the following error mesage was being generated in the vuser log:
RWI 00239 The server has reached the maximum number of simultaneous connections
Connection failed. The server has reached the maximum number of simultaneous connections. (Error: RWI 00239) (Error: INF )

What to do?

In order to find this error I generated a snapshot on error in the run time settings for LoadRunner, then browsed the html source for the vuser typically available at C:\Documents and Settings\UserName\Local Settings\Temp\res

There were a number of incorrect conclusions that I jumped to here:

1. That google would save the day and spoon feed me the answer! The only information I could find was here but alas they did not have the answer. Hence my decision to post here, as no doubt some other performance tester out there is going to hit this problem. I would post on the BOB forum, but hey, you need a login to comment. Meh.

2. My kludge’s approach would be good enough. I thought if I want 50 concurrent users, all I need to do is make sure that I have at least 100 simultaneous connections available. Right?
boconcurrentusersettings.png
Wrong …

As it turns out, a user opens more than one session on the web intelligence server. It seems they need one to login, one as they start to navigate around the folder structure and another to open reports. I’m not too sure if this behaviour is caused by the browser (IE or Mozilla) but it seems to be consistent when using a browser. You can see this information by monitoring a user session in the central management console.
3 Sessions Per User

So that seems to fix the RWI 00239 errors. Now that I’m past that, on to investigating why the web intelligence servers fails under concurrent user load. RWI 00236 is my starting point, let’s revisit google to see what others have found …

RWI 00236 The Web Intelligence server could not be reached.
The Web Intelligence server could not be reached. Contact your Business Objects administrator. (Error: RWI 00236)(Error: INF)

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  1. 2 Responses to “RWI 00239 The server has reached the maximum number of simultaneous connections”

  2. As your friendly “Business Objects administrator” of your systems Tim, let me tell you that support from Business Objects Enterprise seems to be lacking when it comes to difficult issues. They are quick to respond on the simple things, but something like this will most likely have to be fleshed out and solved by you, and I can help along the way. Feel free to see me soon as we can have a go at fixing this!

    I’m having issues with BOE XI R2 as well, but with getting LDAP working over SSL for authentication of BOE users.

    By Ted on Jun 1, 2007

  3. BO is loads of fun, ne c’est pas? My experience with the Australian support aspect was that you quickly ended up with the Gallic support team. It was a few years ago….

    I found BO under-bonnet tweaking was not straightfoward. YMMV….

    By Adrian on Jul 28, 2007

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