title: Duplication issue with bpel service in cluster environment
body: <p>I have a bpel process which invokes a db2 stored procedure through java to get a unique sequence number and then insert that number into one of the db2 table. This process is running in cluster environment, so sometimes it happens that two instance of the process gets the same unique sequence number and then it tries to insert duplicate values into the table resulting in fault. Thanks.</p>