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Nested Transaction in EJB 3.0

 
Tridib Samanta
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Hi All,
Is nested transaction supported in EJB 3.0?
Thanks
-Tridib
 
Valentin Crettaz
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EJB 3.0 core specfication, section 13.1.2:

The Enterprise JavaBeans architecture supports flat transactions. A flat transaction cannot have any child (nested) transactions.

Note: The decision not to support nested transactions allows vendors of existing transaction processing and database management systems to incorporate support for Enterprise Java-Beans. If these vendors provide support for nested transactions in the future, Enterprise Java-Beans may be enhanced to take advantage of nested transactions.
 
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