BMP stateless session bean can't roll back using JTA

[don_henley]

I use weblogic6.1sp2 + jdk131

a stateless session bean must do 2 things:
insert a record to A table and delete another record in A table

this bean has the same structure as the example in
j2eetutorial/examples/src/ejb/teller

I use TxDataSource in weblogic

if delete fail, the roll back is run,but in database,
the insert record is STILL in A table.

any idea?