Intermediate Roadmap of Oracle's ESBs : OSB and OESB

As Thomas Kurian outlined, http://download.oracle.com/products/middleware/oracle-middleware-strategy-briefing-072008.pdf, BEA's ALSB would be a value addition in Oracle's SOA stack. ALSB has been enhanced and re-branded as OSB. The upcoming enhancements includes an integration with BPEL, Oracle's Adapters (AQ/DB/EBS/PSFT/SAP), etc. OSB has a thin client service assembler and supports core ESB patterns including Service Chaining. OSB would be integrated in AS11 and so existing customers can upgrade to the same.

Oracle's existing service bus, now re-branded as OESB, would continue as a part of SOA suite. Apart from basic ESB patterns for routing and service virtualization, it also has useful features like Domain Value Maps, Cross References. In addition to OC4J, it also supports WLS and WebSphere. It is well integrated part and parcel of SOA stack and is seamlessly upgraded to upcoming AS11 as a Mediator Component.

However, any upgrade between OESB to/fro OSB would neither be needed nor be supported.