get the computer name (without the domain name)?

Hi expert,

How can I only get the computer name (without the domain name)?

SQL> select machine from v$session where sid=41;
MACHINE
--------------------
Domain1\BB011499
SQL>


In UNIX, I would do this but I need it to be done inside SQL

# echo 'Domain1\BB011499' | awk -F\\ '{print $NF}'
BB011499

Thanks,

Roger Xu

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