This thread has some good links regarding reporting tools.
I'd expect to do data moves from one database to another with special tools, outside Java. You might get lucky with an export from one db and import into another, or use a high end tool like Informatica. Look for info about ETL Tools.
A good question is never answered. It is not a bolt to be tightened into place but a seed to be planted and to bear more seed toward the hope of greening the landscape of the idea. John Ciardi