If you already have a 10g database setup and running without the JVM (Java Virtual Machine) installed and later descide you want to add say OWB (Oracle Warehouse Builder) to you instance then you need to get JVM working first. It's not that complicated realy but follow these steps laid out in Metalink (Doc-ID:276554.1) if you want to get it right first time.
Recently in Java Category
Here is an interesting article about the next release planed for Java 1.5.
This was pointed out by Steve Muench of Oracle Corporation.
