Hash value

Hi Guys,  

I'm trying to calculate the hash value of statements as oracle does in

the v$sqlarea.  

I tried to use the dbms_utility.get_hash_value yet it seems that

oracle doesn't use this for its own hash calculation.  

Do u know how do they do that and if there is any public function that

I can use?  

Thanks a lot,

Adi Hirschtein  

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