How To Subdivide 1 Large TABLE Based On The Output Of A VIEW?

I am searching for a decent method / example code to subdivide a large table (into a global temp table (GTT) for further processing) based on a list of numeric/alphanumeric which is the resultset from a view.

I am groping with the following strategy in PL/SQL:

1 -- set up cursor, execute the view (so I have the list of identifiers)

2 -- create a second cursor (or loop?) which: accepts each of the identifiers in turn executes a query (EXECUTE IMMEDIATE?) on the larger table INSERTs (or appends?) each resultset into the GTT

3 -- Then the GTT contains just the requires subset of the larger table for further processing and eventual import into iReport for reporting.

GTT is defined and ready to go, the larger table contains approx 40,000 rows and I need to extract a dozen subsets or so which add up to approx 1000 rows.