We migrated from HSQLDB to PostgreSQL using SQuirreLSQL 2.6.4, but is a manual migration !!
Install jforum and use the wizard to create the database structure. later using Squirrel you can export the tables as a SQL script, and you can execute the script in the Oracle.
Regards,
Dani [originally posted on jforum.net by gardan]
Don't count your weasels before they've popped. And now for a mulberry bush related tiny ad: