Calculating age in Oracle query

Experts,

I have a column DOB which is on TableA   one of the tables I am reading into my Oracle query.  The query has multiple tables.  Can someone tell me how to calculate the age as of Dec 01, 2016.

I am using a pass-through query in SAS to read the Oracle tables.
moriniaAdvanced Analytics AnalystAsked:
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Gerald ConnollyCommented:
It depends how you are storing your dates?

Here is a page that talks about using dates in Oracle http://www.akadia.com/services/ora_date_time.html

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