Extracting month from date

hi,
I have a query in Informix which get the month part of a date. Please help me in converting the same to oracle.
Informix query
select month(col1 - today) from tab1;
col1 is a date field, today will yield the current date and month function will get the month of the date.
In oracle, when we subtract two dates we will get a number value, how to convert that back to date and extract the month part.
Help me?????
Regards,
Gopu

select months_between(sysdate, col1)
from tab1;
This will return a decimal value representing the months and part month between the two periods. The later date should be specified first, or the result will be a negative value.

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