trans-attribute in ejb-jar.xml for MDB

[Shaily Sharma]

Hi All,
could anyone pls tell me the significance of
"trans-attribute" if set to:
1) "NotSupported" :
2) "Supports"/"Required"(difference?):

I have written MDB which has DB transaction to populate values from DB table, which attribute is suitable in this scenario.

Thanks in advance.

[Jeanne Boyarsky]

Shaily,
"Not supported" means the MDB won't use a transaction. "Required" means the MDB will use a transaction. "Supported" does not apply to MDBs. In a session bean, it is used to mean the caller may or may not supply a transaction.