Need help doing a dissolve in Oracle

I am trying to dissolve a large number of polygons. In ArcGIS the operation simply was not practical so I am trying to do it in Oracle.  For my initial test I am trying this:

  where c.objectid < 101

But I am getting the following error:

ORA-22901: cannot compare VARRAY or LOB attributes of an object type
22901. 00000 -  "cannot compare nested table or VARRAY or LOB attributes of an object type"
*Cause:    Comparison of nested table or VARRAY or LOB attributes of an
           object type was attempted in the absence of a MAP or ORDER
*Action:   define a MAP or ORDER method for the object type.
Error at Line: 12 Column: 54

If I do the aggregate function on the shape column only  it works successfully.  I tried adding an ordered hint but no sucess either.

Any Ideas will be greatly appreciated.
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OR1Author Commented:
I got around the error I was having.  The statement runs without errors not and it gives me the same number of features I would expect from doing it with ArcGIS.  The problem I have now is that it is very slow. It took 1 hour to run on 3335 polygons. If there something I am doing wrong?


Also I will have to convert this into something I can export to a new  geodatabase  feature class.  I was thinking about selecting the results of the query into a a table and register it later as a feature class. Does  that sound like the right approach?


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you can use exp.  I would like to have the shape file to work with.
If you can let me know and I will give your a place to send it.
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