How are you connecting as sys? From the server? Is the listener running? What happens with tnsping from another box. Need to try some basic (non-OEM) troubleshooting and maybe give some more info about the version, operating system, what you've tried, etc. On Wed, Nov 26, 2008 at 7:13 AM, drumil narayan <drumilnarayan@xxxxxxxxx>wrote: > am not able to connect to our production server, two nod rac. > in oem it is showing metric collection error. in alert logs there are no > errors. dumps or core have no been generated at other dump destinations. > other sys none of the user is getting connected > > what could be the issue...this is critical production system > > thanks > > > ------------------------------ > Be the first one to try the new Messenger 9 Beta! Click > here.<http://in.rd.yahoo.com/tagline_messenger_7/*http://in.messenger.yahoo.com/win/> >