Originally posted by slimdave
It's not that simple, I think. The 2068 error refers to losing a connection needed for a database link.
I really meant the error ORA-03113 end-of-file on communication channel
and 2068 was jus in a hurry to copy paste from above/original post...

Well 03113 also states if any session being killed/disconnected immediate this error can be seen, but to my notice i never had Ora 03113 when session is even killed immediate..

Most likely cause is the N/W..for this kinda errors..

Abhay.