Dear users, I am new to Jena and have a problem with Jena OWL-API. I have written some simple Java code that:
1) extracts some tuples (around 1 million tuples) of data from a database 2) puts each of them in an ontology file using Jena library. In particular, it takes every tuple and inserts every element in a class of the ontology file, by using methods like createIndividual, addproperty, model.write. The insertion phase is very quick when my program starts, but the performances became worse and worse as time goes by. The DB man has told me that the database has no problems. I have run the program with 5 gigabytes of RAM...it simply ends up to use them all. Is that normal? Do I have to use a more powerful PC to manage such data? I can give you more details about my problem if you tell me what I have to look for exactly. Thanks a lot, Paola
