oracle 11gr2 to postgres 9.2.3 (part 1)

A friend of mine gave me an export (expdp) of an oracle 10g database, its almost 4gigz compressed so i reckon its about 12-14gb, the job is to migrate it to postgres... The plan is to create a VM running 11gr2 on oracle linux, compile postgres on the same VM and start migrating. Currently i have a couple of ideas on how to do it but the whole thing depends on what code functions, stored procedures the export contrains, from the export log i saw a quite complicated schema...

to be continued...