SQL & PL/SQL

Hi All,

I want to display my DB timezone name in my application.But when I try below query I am getting only Off-set Value

SELECT DBTIMEZONE FROM DUAL

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+05:30

Is it possible to get my database timezone name instead of offset value?.If not is it possible to convert offset to curresponding timezone name(Even for same offset having multiple region name also ok.I can display any one of that name)?

My DB time zone is "Asia/Calcutta".In table V$TIMEZONE_NAMES also no offset field to map DBTIMEZONE.

Can you please help me on this.

Thanks.