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Default transaction attribute

 
Ashutosh Shinde
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Hello All,
What is the default transaction attribute set for methods of the Session/Entity bean when the transaction attribute is not explicitly mentioned in the XML file?
Thanks,
Ashutosh
 
Chris Mathews
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There is no default transaction setting dictated by the EJB Specification:
EJB 2.0 Specification, Section 17.5
The Deployer is responsible for ensuring that the methods of the deployed enterprise beans with container-managed transaction demarcation have been assigned a transaction attribute. If the transaction attributes have not been assigned previously by the Assembler, they must be assigned by the Deployer.

If you do not specify a transaction attribute for methods in an EJB then it's transactional behavior will depend on the particular EJB Container that you are using.
In the case of WebLogic, if a transaction attribute is not specified then the EJB or method behaves as if it has a transactional setting of "Supports". JBoss, on the other hand, seems to default to "Required".
For the sake of portability, you should always specify a transaction setting for your EJBs.
 
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