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In our application when we create the Datasource, we select the
Database Name DB2
Driver: BEA Type 4 XA DB2
But what i know is, there are only 4 types of Driver. Then what is Type 4 XA driver?
From this blog entry.
That is, a transaction running across (say) 2 databases. So, for example, insertions can be managed across those 2 databases and committed/rolled back atomically.
The “type 4” refers to a native Java JDBC driver converting directly into the database protocol. See here for more details