How to generate a version 4 (random) UUID on Oracle?

Question

This blog explains, that the output of sys_guid() is not random for every system:

http://feuerthoughts.blogspot.de/2006/02/watch-out-for-sequential-orac

Answer 1

You can write a Java procedure and compile it and run it inside Oracle. In that procedure, you can use:

UUID uuid = UUID.randomUUID();
return uuid.toString();

To generate desired value.

Here's a link on how to compile java procedures in Oracle.