Question

I am extracting data from excel sheet and inserting them into my oracle table. The database is setup in a way that when executing a batch statement, if any insert statement in the batch fails, all the other statements in the batch are not executed. So my problem is how can I find out which row of data is actually causing it, so I can send a message to the user with the row number of the data that’s causing the problem?

Connection con = null;
    PreparedStatement pstmt = null;
    Iterator iterator = list.iterator();
    int rowCount = list.size();
    int currentRow = 0;
    String sqlStatement = "INSERT INTO DMD_VOL_UPLOAD (ORIGIN, DESTINATION, DAY_OF_WEEK, VOLUME)";
    sqlStatement += " VALUES(?, ?, ?, ?)";
int batchSize==1000;
for(currentRow=1; currentRow<=rowCount; currentRow++){
            ForecastBatch forecastBatch = (ForecastBatch)      iterator.next();                                 
            pstmt.setString(1, forecastBatch.getOrigin());
            pstmt.setString(2, forecastBatch.getDestination());
            pstmt.setInt(3, forecastBatch.getDayOfWeek());                                          
            pstmt.setInt(4, forecastBatch.getVolumeSum());

            pstmt.addBatch();
        if(i % batchSize == 0){
                updateCounts = pstmt.executeBatch();
                con.commit();
                pstmt.clearBatch();
                session.flush();
                session.clear();
            }
        }

Answer 1

executeBatch returns an integer array containing the counts of all the rows modified by each statement in the batch. I think negative numbers are used to indicate errors. You should be able to figure out which ones failed using this return value.

http://docs.oracle.com/javase/1.3/docs/guide/jdbc/spec2/jdbc2.1.frame6.html