The UDDI registry fully supports a number of databases and can be used for development and test purposes. However, there are factors to consider when you decide which database is appropriate for your anticipated UDDI registry production use.
It is important to consult the information that is supplied by your chosen database vendor, but you also need to consider the likely size and volume of requests, and whether the general performance and scalability of the UDDI registry is important.
If you need multiple connections to the UDDI registry database (for example to use the UDDI registry in a cluster configuration) and Cloudscape is your preferred database, you need to use the network Cloudscape option. This is because embedded Cloudscape has a limitation that allows only one Java virtual machine to access or load a database instance at any one time. That is, two application servers cannot access the same Cloudscape database instance at the same time.