Oracle SOA BPEL Interview Questions

Following are some questions often asked in SOA BPEL Interviews

• What are the Major Elements in WSDL?

Answer: 1) types 2) message 3) portType 4) binding

• Explain about SOAP Structure?

Answer: 1)Envelope ->indentifies the xml doc as a SOAP message
2)Header   ->contains header information
3)Body Element ->contains call and response information
4)Fault Element ->containing errors and status information

• What are the BPEL activities?

Answer: 1)Assign Activity 2)Transform Activity 3)Invoke Activity 4)Recieve Activity 5)Scope Activity

6)Wait Activity 7)Empty Activity

• Difference between Complex Type and Simple Type element?

Answer: Complex Type ->because it contains other elements
Simple Type     ->these elements contain other elements

• Difference between synchronous and Asynchronous process?

Answer: Asynchronous refers to processes that do not depend on each other's outcome, and can therefore occur on                 different threads simultaneously. The opposite is synchronous. Synchronous processes wait for one to complete                       before the next begins.

• In Oracle SOA 11g What is difference between imports & Include?

Answer: The fundamental difference between include and import is that you must use import to refer to declarations               or definitions that are in a different target namespace
and you must use include to refer to declarations or definitions that are (or will be) in the same target namespace.

• What is synchronous file read ?

Answer: Sync Read is used to read a file in the middle of a BPEL process

• In database adapter configuration difference between XA data source and non-XA data source?

Answer: An XA transaction, in the most general terms, is a "global transaction" that may span multiple resources. A                     non-XA transaction always involves just one resource.

An XA transaction involves a coordinating transaction manager, with one or more databases (or other resources, like                 JMS) all involved in a single global transaction. Non-XA transactions have no transaction coordinator, and a single                       resource is doing all its transaction work itself (this is sometimes called local transactions).

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