Memory usage increases when using Web services
 

Hello,

I'm working on a project using web services in C#.
I have a Oracle database and different clients are requesting data using the web services from the Oracle database.
In time after a few hours of running the web services IIS server memory usage seems to increase. I've checked the connection to database and retrieving of data and all are correctly disposed in the specific Dispose method.
Private bytes, working set, Gen 2 heap, bytes in all heaps are all increasing.
I've tried to use a few profilers like CLR from Microsoft but I wasn't able to figure out the problem.
Which is the best approach here?
For which kind of specific mistakes in code should I search?
Probably there are small leaks in different places and in time this causes the memory growth.

Thanks in advance !