Oracle/Aqualogic Service Bus Interview Questions - Part 1 Service Bus

1. How can you generate File Based Events using Oracle Service Bus? Service Bus allows you to create Proxy Services that can poll to ftp and sftp servers . Create a Messaging Type Proxy Service and choose , ftp or sft as the protocol on transport configuration. 

2. How can you invoke an EJB method from Oracle Service Bus? EJBs can be invoked as Web Services by first registering a Business Service with ejb transport and then getting the WSDL from the Business Service.

3. How can you achieve parallel processing in Oracle Service Bus? Oracle Service bus has the Split Join capability. A request can be broken to multiple childs each of which can be processed parallel and the results can be joined and then sent to requester.

4. What is difference between a WSDL Proxy Service and Any SOAP Proxy service? Any SOAP proxy service can accept any payload that conforms to SOAP schema.

5. Can you interact directly with Database from Service Bus? Yes by using the BEA XQuery method execute-sql

6. How can you interact transaction ally with multiple EIS such as JMS EJB and DB in Service Bus? Invoke the Business Services and xqueries(for DB) representing the different EIS in the request pipeline

7. For a Proxy Service listening to a JMS Queue how can you ensure that the JMS Message is retried if an error occurs during processing? Use an XA JMS Connection factory in the jms url.

8. What purpose do the Stage components serve in Service Bus? They are the containers for actions. A stage is the smallest group to have its error handling

9. How can you jump control from one stage to next stage without using if then else logic? Use the Skip action

10. How can you end a Proxy flow without using if then else logic ? By using the Reply action