Oracle.exe is consuming 100% cpu o windows

Hi,
We have 6 oracle 10g database on windows box and from task manager we are able to see oracle.exe is consuming 100% cpu
Need to know this oracle.exe belongs to which database and can i get the sql for this process
Thanks

On my Vista PC, I find that the easiest way to identify which instance an oracle.exe is, is the task manager. On the Processes tab, right-click the oracle.exe and then click Go To Service(s) and that takes me to the OracleServiceORCL or whichever insance it is.
I'm sure there is a better way that a Windows person could tell us about. Then having identified the instance, it is just normal tuning from there.

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