We are using SQldependency for Query Notifications in our program. In our webserver we have database from which we send query notification. The application runs in our office PC. It works fine and I do receive instant notification on any changes in table. But for last few days sometimes I get error. The application is does not get any notification even though changes are there. The problem comes at random time. I also confirmed the internet connection by using continuous ping to the server and it was proper. Reopening my application solved the problem temporarily. But I want to know what may be reason for this problem. How can I troubleshoot it.
I don't think anyone can guess what is wrong with your deployment, w/o any info. My advice is to read The Mysterious Notification, Troubleshooting Query Notifications and Troubleshooting Dialogs. With a better understand of how it works and what to look for, perhaps you can diagnose the issue.
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This error is occurring on every *.asp page in the application, but the *.aspx pages work just fine.
I did not develop the application, but the person who did has long since left the company. We have about 20 customers, all with the program working just fine. One of the customers had their server crash, and we had to re-set it up on their new server. Everything is working just fine now, except for this error on the *.asp pages.
The same connection string is used for all of our customers, so I know the problem is not there. There are no system DSNs or user DSNs defined on any of our customers.
This is a 32-bit application on a 32-bit server (server 2003 with SQL 2005).
I'm pretty sure it's a permissions or setting error, but I have checked absolutely everything I can think of.
Please help.
A company with 1400 employees can't use this program until I get it back up and running. I have no idea what else to do.
Thanks everyone for your help.
Sorry it took me a little bit to respond to you, but I had heard back from the original developer, and he had a hidden connection string deep within the program specifically to trip someone up if they were trying to install the program without authorization. He gave me the info I needed and it worked beautifully.
Thanks again!
This is driving me a bit nuts, I have rufus doing some scheduling to call a rules engine (ruleby). So most work I have running is inside the running engine and then inside the scheduler. As a result when I have a error the information is a bit limited.
Fast forward, Im still working on my code but now I have this exception error:
'undefined method `+' for nil:NilClass'
It wasnt happening before, Im not sure exactly when it started and if it was what I was doing with the code or some events that came in that come in via http push. I comment out the code I think is causing it, stops happening, I put the code back in, still not happening, I leave it for a while, starts happening again. I try and run the engine manually outside the scheduler (so just once instead of every x many minutes), doesnt happen.
Put it back on the scheduler to run a few times, starts happening again. I would google the above error but google doesnt love the + in the search. Anyone have any ideas where to direct me to for this? Its clearly something happening when the rules engine is running but it was more than happily running for weeks before i got back to trying to finish it off. Best thought is that its during the rules engine running it passes events into it one at a time and something is missing that wasnt before.
Really want to know what the + method it refers to is/could be/suppose to be.
I need your help, I have a problem with server.transfer code in vb.net, it runs so slow..
My Question:
Why does it run slowly (take 5 minutes to move between web pages (.aspx))?
What should i check for this trouble?
Is it because operating system? Im use windows 7, before i used windows XP there is no problem like this...
is server.transfer related to database connection (not sure)? I use mysql (XAMPP packages).
Or may be because other configuration that i miss out in windows seven.
FYI: i try in several web browser same result(loading 5 minutes)..
Thank every one that answer my question, thank you very much!
One thing I've found on this is that it can have to do with the status code the transferred page returns. If it returns a 500 error, it can make your server transfer run upwards of five minutes.
One way to test this, if you can, is to run the transferred page in isolation and generate any of the information being transferred on the other side to see if any errors are generated.
It took me a day to figure this out. Hopefully it helps someone else.
I have almost exactly this problem. I say, almost exactly because the answer that worked for this gentleman did nothing whatsoever for me. I can open my own database and see all of the lovely RS data sitting there staring at me but the actual Reporting Services installation still can't. This all came about because of precisely what he said. We accidentally left the password policy on on the Reporting Services account and it expired. When I changed it the whole thing went kaputt. I'm still getting the "key cannot be used in current state" error message even after dropping all encrypted data from the RS installation. I have no access to the Report Manager to reset encrypted information. Has anyone got any suggestions?
EDIT: In continuing my research I found this suggestion. It's not that.
Well... here's the thing.
I eventually tried creating a whole new user to take charge of the SSRS operations. I also remembered to update those details on our live data server. (I did this first and it failed to work as it was still telling me the key could not be used then.)
I guess that there must be something that prevents the reassignment of the SSRS gofer account's password. The new user is set up identically and works perfectly. So that's what cleared it up for me but I'm a little irritated that I still don't know exactly why...
I have a Window Forms application (using clickonce installation, running on a terminal server) that occasionaly ends up with a thread that appears to be running in a tight loop. The user doesn't know this happens as the app continues to run as expected. Also I have determined that I can kill the problem thread without any apparent affect on the app.
I can use Process Explorer to find the instance of an app with the problem and can isolate the thread with the problem but haven't found any way to look into the thread to find anything that would help me determine what is causing the problem. Does anyone know of a way to some additional information about a thread, like maybe strings, that would help me zero in on the issue?
Thanks,
Dave
Haven't tried this myself but "Process Monitor" claims it "shows real-time file system, Registry and process/thread activity"
http://technet.microsoft.com/en-us/sysinternals/bb896645.aspx
Hope this helps.
You should be able to attach Visual Studio to the running process to get more information. Provided the .pdb files are included with the application and you have source code for the avialable version you should be able to use the Threads window combined with pausing / stepping through to see just what the code is doing.