All Pooled Connections were in use and max pool size was reached
Application Type
Service Studio Version
11.14.11 (Build 59394)
Platform Version
11.15.0 (Build 34858)


We encountered this error in our Production server for about 10-15mins.

then after that, the error disappears, but we didn't change anything in the production server and database server.

but just in case we experience this kind of error again, What is the cause and how can we solve this problem?

Hi Ruzzel,

Seems like all the DB connections are utilized from pool. Is there any long running query causing this, you can check the outsystems service center

Below are the article with possible reasons of this error and it may help you to figure it out

Hi Devendra,

Sorry for the reply.

Thank you for giving us a hint now we identify what is the cause of this error.


Hi Ruzzel,

I would suggest to read the following success article to have a better understanding of how connection pooling works in the OutSystems platform.



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