Unfortunately, it wasn't until Oracle9i that the DBMS_METADATA package was available to reverse engineer database objects. That is one of the reasons why there were so many tools on the market to do this very thing. Oracle's Enterprise Manager lets you get the DDL for any object by right-clicking on the object and choosing Show Object DDL. You can even save this DDL to a file. There are many third party tools which will do the same. If that doesn't work for you, then you can search the Web for reverse-engineering scripts.
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