Problem with RollBack in Oracle Batching

Question

Hi all,
This is Adhil. I am facing a problem with Oracle Batching in java.
I am using java 1.5 and Oracle 10 g.
I have a below standalone code to test the Oracle Batching (Assume that i have the 2 tables with zero records ).
with the batch size set as 10, I am trying add 2 records in each table.
Now I rise divideByZero error exception manually and trying to rollback the connection in catch statement . But couldn't rollback the connection. I see the 2 records added in both of my tables.
The same code when i set the batchsize 2 and trying to insert 10 records ,I could rollback and no rows get inserted.
Since I am going to get the no of insert from user in runtime , my rollback may fail in any combinations as in my first case(with batch size 10 and if the no of insert is 2).
import java.io.*;
import java.util.*;
import java.sql.*;
import oracle.jdbc.*;
public class BatchTest{
     public static void main(String args[]) throws Exception{
          Connection conn = null;
          conn = new BatchTest().createConnection();
          new BatchTest().insertdata(conn);
     public Connection createConnection() throws Exception{
               Properties props =new Properties();
               props.load(ClassLoader.getSystemResourceAsStream("connection.properties"));
               String connectionString = (String)props.get("connection");
               String username = (String)props.get("username");
               String password = (String)props.get("password");
               Class.forName("oracle.jdbc.driver.OracleDriver");
               Connection connection = DriverManager.getConnection(connectionString, username, password);
               return connection;
     public void insertdata(Connection dbConnection){
          PreparedStatement psCnt =null;
          PreparedStatement psImp =null;
          try{
          dbConnection.setAutoCommit(false);
          psCnt = dbConnection.prepareStatement("insert into CHKCNT values (?,?)");
          psImp = dbConnection.prepareStatement("insert into CHKIMP values (?,?)");
          ((OraclePreparedStatement)psCnt).setExecuteBatch (10);
          ((OraclePreparedStatement)psImp).setExecuteBatch (10);
          int x=0;
          for(int i=1;i<=2;i++){
                    psCnt.setInt(1,i);
                    psCnt.setString(2,"Jack");
                    psImp.setInt(1,i);
                    psImp.setString(2,"John");
                    psImp.executeUpdate();
                    psCnt.executeUpdate();
          if(true) x=10/0;
          dbConnection.commit();
          }catch(Exception e){
               try{
               dbConnection.rollback();
               dbConnection.close();
               }catch(Exception ex){
               e.printStackTrace();
          }finally{
               try{
                    psCnt.close();
               }catch(Exception ee){
               ee.printStackTrace();
Can anyone suggest me a way to make my rollback work.
Thanks in advance.
-adhil.J

Answer 1

Hi all,
This is Adhil. I am facing a problem with Oracle Batching in java.
I am using java 1.5 and Oracle 10 g.
I have a below standalone code to test the Oracle Batching (Assume that i have the 2 tables with zero records ).
with the batch size set as 10, I am trying add 2 records in each table.
Now I rise divideByZero error exception manually and trying to rollback the connection in catch statement . But couldn't rollback the connection. I see the 2 records added in both of my tables.
The same code when i set the batchsize 2 and trying to insert 10 records ,I could rollback and no rows get inserted.
Since I am going to get the no of insert from user in runtime , my rollback may fail in any combinations as in my first case(with batch size 10 and if the no of insert is 2).
import java.io.*;
import java.util.*;
import java.sql.*;
import oracle.jdbc.*;
public class BatchTest{
     public static void main(String args[]) throws Exception{
          Connection conn = null;
          conn = new BatchTest().createConnection();
          new BatchTest().insertdata(conn);
     public Connection createConnection() throws Exception{
               Properties props =new Properties();
               props.load(ClassLoader.getSystemResourceAsStream("connection.properties"));
               String connectionString = (String)props.get("connection");
               String username = (String)props.get("username");
               String password = (String)props.get("password");
               Class.forName("oracle.jdbc.driver.OracleDriver");
               Connection connection = DriverManager.getConnection(connectionString, username, password);
               return connection;
     public void insertdata(Connection dbConnection){
          PreparedStatement psCnt =null;
          PreparedStatement psImp =null;
          try{
          dbConnection.setAutoCommit(false);
          psCnt = dbConnection.prepareStatement("insert into CHKCNT values (?,?)");
          psImp = dbConnection.prepareStatement("insert into CHKIMP values (?,?)");
          ((OraclePreparedStatement)psCnt).setExecuteBatch (10);
          ((OraclePreparedStatement)psImp).setExecuteBatch (10);
          int x=0;
          for(int i=1;i<=2;i++){
                    psCnt.setInt(1,i);
                    psCnt.setString(2,"Jack");
                    psImp.setInt(1,i);
                    psImp.setString(2,"John");
                    psImp.executeUpdate();
                    psCnt.executeUpdate();
          if(true) x=10/0;
          dbConnection.commit();
          }catch(Exception e){
               try{
               dbConnection.rollback();
               dbConnection.close();
               }catch(Exception ex){
               e.printStackTrace();
          }finally{
               try{
                    psCnt.close();
               }catch(Exception ee){
               ee.printStackTrace();
Can anyone suggest me a way to make my rollback work.
Thanks in advance.
-adhil.J