Quote Originally Posted by mayura.ch View Post
Also check whether you have set TNS_ADMIN env variable on windows.
well it is obviously set else it would go wrong all the time. As said, it doesnt happen all the time, just every now and then. Moslty several times in a minute. I have tnsping looping so it tries it every 0.6 seconds.


Anyway, the issue is solved since i run the listener on port 1521 instead of 1527...!?!?!