IF Statement in Queries

Can we use an "if then else" statemtent in a query such that it executes particular query depending on the condition specified on a UDF? That is,
if condition = true, then execute query1 else if condition = false then execute query2.
How do we write such a query in SAP B1 retrieve values depending on values selected in a formatted search?
Kind Regards,
Asif

Hi,
Try this:
IF $\[Owtr.U_TrnTyp\] = '1'
select T0.U_DocTyp FROM dbo.@DOCTYPES T0 where T0.U_TrnTyp = '1st Transfer'
IF $\[Owtr.U_TrnTyp\] \<\> '1'
select T0.U_DocTyp FROM dbo.@DOCTYPES T0 where T0.U_TrnTyp \<\> '1st Transfer'
On your post the second select statement does not have a condition between T0.U_TrnTyp and '1st Transfer' so you may want to look at that part of the query. I've added the not equal sign (it only displays if i add a \ before each symbol) as other wise the select statement looks the same.
Regards,
Adrian

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Using the Insert statement in a Java program without hardcoding the data

hello.
this is james mcfadden. i have developed a program called Demo.java, which is used with another program called QueryTableModel.java (a program that allows data to be viewed in a JTable). The Demo.java program displays a menu, connects to a database, allows the user to add data into the database and allows the user to view data that is already in the database. I have a problem with the Demo.java program. I have hardcoded the Insert statement in it. How do you use the Insert statement to put data into a database without hardcoding the data?
import java.awt.*;//Contains all of the classes for creating user interfaces and for painting graphics and images
import java.awt.event.*;//Provides interfaces and classes for dealing with different types of events fired by AWT components
import javax.swing.*;//Provides a set of lightweight components that, to the maximum degree possible, work the same on all platforms
import javax.swing.table.*;//Provides classes and interfaces for dealing with javax.swing.JTable
import javax.swing.JOptionPane;//provides a class that makes it easy to pop up a standard dialog box that prompts users for a value or informs them of something
import java.sql.*;//Provides the API for accessing and processing data stored in a data source using the Java programming language
public class Demo extends JFrame{
   static String url = "jdbc:odbc:VideoLibrary";//a static variable that allows a connection to be made to a database called VideoLibrary
   static Statement stmt;//a static variable that allows a statement to be made once a connection is set up
   static Connection con;//a static interface that allows a connection to be made to a database
     //global variables
     JTextField hostField;//a class that allows a line of text to be changed
   JTextField queryField;//a class that allows a line of text to be changed
   QueryTableModel qtm;//a class that shows and changes regular two-dimensional tables of cells
   JComboBox comboBox;//a class that puts a button or editable field and a drop-down list together
   public static void main(String args[]){
      int choice=-1;//a variable of type int that is set to -1
          do{
         choice=getChoice();//invokes the method getChoice()
         if(choice!=0){
            getSelected(choice);//invokes the method getSelected(choice)
         }//end if
               //if the user chooses 5, it will cause him or her to exit the system
      }while(choice!=5);//end do-while
      System.exit(0);//closes down the menu screen
   }//end main
   public static int getChoice(){
      String choice;//a variable of type string
      int ch;//a variable of type int
      choice = JOptionPane.showInputDialog(null,"1. Maintain product details\n"+"2. Maintain member details\n"+"3. Maintain rental details\n"+"4. View product, member and rental details\n"+"5. Log Off\n\n"+"Enter your choice");//asks the user for some input
          ch = Integer.parseInt(choice);//a class that wraps a value of the primitive type int in an object
          return ch;//a method that returns an integer value
   }//end getChoice
   public static void getSelected(int choice){
          if(choice==1){
         maintainProductDetails();//invokes the method maintainProductDetails()
      }//end if
      if(choice==2){
         maintainMemberDetails();//invokes the method maintainMemberDetails()
      }//end if
          if(choice==3){
         maintainRentalDetails();//invokes the method maintainRentalDetails()
      }//end if
          if(choice==4){
             Demo test = new Demo();//invokes the constructor Demo()
         test.setVisible(true);//shows the JTable component by marking it as visible
          }//end if
   }//end getSelected
   public static Connection getConnection(){
      try {
         Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");//used to create a JDBC connection using a database
      }//end try
          catch(java.lang.ClassNotFoundException e){//causes an exception to be thrown when an application tries to load in a class through its string name
         System.err.print("ClassNotFoundException: ");//displays an error message
         System.err.println(e.getMessage());//returns the exception that was raised if an error occurred while attempting to load the ClassNotFoundException class
      }//end catch
      try {
         con=DriverManager.getConnection(url,"","");//tries to create a connection with the database using the DriverManager class
      }//end try
          catch(SQLException ex) {
         System.err.println("SQLException: " + ex.getMessage());//returns an SQL error message
      }//end catch
      return con;
   }//end getConnection
   public static void maintainProductDetails(){
      Connection con = getConnection();//creates a connection with the database
      String addProduct1, addProduct2, addProduct3, addProduct4, addProduct5, addProduct6, addProduct7, addProduct8, addProduct9, addProduct10;//string variables that represent information about the different types of product data that will be stored in the database
      addProduct1 = "insert into Product values (110001, 'The Killers - Sams Town', 5.00, 'G', 'CD', 2006)";
      addProduct2 = "insert into Product values (110002, 'Robbie Williams - Rudebox', 5.00, 'G', 'CD', 2006)";
      addProduct3 = "insert into Product values (110003, 'Razorlight - Razorlight', 5.00, 'G', 'CD', 2006)";
      addProduct4 = "insert into Product values (110004, 'My Chemical Romance - The Black Parade', 5.00, 'G', 'CD', 2006)";
      addProduct5 = "insert into Product values (110005, 'Snow Patrol - Eyes Open', 5.00, 'G', 'CD', 2006)";
      addProduct6 = "insert into Product values (110006, 'Scissor Sisters - Ta-Dah!', 5.00, 'G', 'CD', 2006)";
          addProduct7 = "insert into Product values (110007, 'Lovesounds - Justin Timberlake', 5.00, 'G', 'CD', 2006)";
      addProduct8 = "insert into Product values (110008, 'Director - We thrive on big cities', 5.00, 'G', 'CD', 2006)";
      addProduct9 = "insert into Product values (110009, 'Roxette - Roxette hits', 5.00, 'G', 'CD', 2006)";
      addProduct10 = "insert into Product values (110010, 'Pussy Cat Dolls - PCD', 5.00, 'G', 'CD', 2006)";
          try {
         stmt = con.createStatement();//Creates a Statement object for sending SQL statements to the database
             //statements are allowed to be made once a connection is set up
             stmt.executeUpdate(addProduct1);
         stmt.executeUpdate(addProduct2);
         stmt.executeUpdate(addProduct3);
         stmt.executeUpdate(addProduct4);
               stmt.executeUpdate(addProduct5);
         stmt.executeUpdate(addProduct6);
             stmt.executeUpdate(addProduct7);
         stmt.executeUpdate(addProduct8);
         stmt.executeUpdate(addProduct9);
         stmt.executeUpdate(addProduct10);
         stmt.close();//closes the Statement object
         con.close();//terminates the connection with the database
      }//end try
          catch(SQLException ex) {
         System.err.println("SQLException: " + ex.getMessage());//returns an SQL error message
      }//end catch
   }//end maintainProductDetails
   public static void maintainMemberDetails(){
      Connection con = getConnection();//creates a connection with the database
      String addMember1, addMember2, addMember3, addMember4, addMember5, addMember6, addMember7, addMember8, addMember9, addMember10;//string variables that represent information about the member data that will be stored in the database
      addMember1 = "insert into Member values (1234, 'Ann', 'Smyth', 'Upper Killult, Falcarragh, Co. Donegal', '(074)-9135210', '(087)-2030172', #5/11/85#, #5/12/06#)";
      addMember2 = "insert into Member values (2345, 'John', 'Murphy', 'Lower Killult, Falcarragh, Co. Donegal', '(074)-9135211', '(087)-2030173', #4/12/85#, #6/13/06#)";
      addMember3 = "insert into Member values (1324, 'James', 'McFadden', 'Lower Ardsbeg, Gortahork, Co. Donegal', '(074)-9165314', '(087)-2030171', #4/11/85#, #6/14/06#)";
      addMember4 = "insert into Member values (1235, 'Frankie', 'Ferry', 'Ardsmore, Gortahork, Co. Donegal', '(074)-9165325', '(087)-2031234', #6/13/60#, #6/15/06#)";
      addMember5 = "insert into Member values (1236, 'Daniel', 'McKimm', 'Ballyness, Falcarragh, Co. Donegal', '(074)-9135212', '(087)-2030184', #5/14/73#, #6/16/06#)";
      addMember6 = "insert into Member values (2346, 'Stephen', 'Doohan', 'Ballyness, Falcarragh, Co. Donegal', '(074)-9135213', '(087)-2030185', #6/13/85#, #5/13/06#)";
      addMember7 = "insert into Member values (2347, 'James', 'Ferry', 'Meenlaragh, Gortahork, Co.Donegal', '(074)-9165360', '(087)-2031345', #9/12/85#, #5/14/06#)";
      addMember8 = "insert into Member values (2348, 'Liam', 'Cannon', 'Derryconner, Gortahork, Co.Donegal', '(074)-9165324', '(087)-2031456', #4/11/86#, #5/15/06#)";
      addMember9 = "insert into Member values (2401, 'Ciaran', 'Ferry', 'Brinalack, Gweedore, Co.Donegal', '(074)-9176425', '(087)-2030282', #9/12/85#, #5/16/06#)";
      addMember10 = "insert into Member values (2402, 'Ciaran', 'McGee', 'Derrybeg, Gweedore, Co.Donegal', '(074)-9176536', '(087)-2030393', #9/14/85#, #5/18/06#)";
      try{
         stmt = con.createStatement();//Creates a Statement object for sending SQL statements to the database
               //statements are allowed to be made once a connection is set up
               stmt.executeUpdate(addMember1);
         stmt.executeUpdate(addMember2);
         stmt.executeUpdate(addMember3);
               stmt.executeUpdate(addMember4);
               stmt.executeUpdate(addMember5);
               stmt.executeUpdate(addMember6);
               stmt.executeUpdate(addMember7);
               stmt.executeUpdate(addMember8);
               stmt.executeUpdate(addMember9);
               stmt.executeUpdate(addMember10);
         stmt.close();//closes the Statement object
         con.close();//terminates the connection with the database
      }//end try
          catch(SQLException ex) {
         System.err.println("SQLException: " + ex.getMessage());//returns an SQL error message
      }//end catch
   }//end maintainMemberDetails
     public static void maintainRentalDetails(){
      Connection con = getConnection();//creates a connection with the database
      String addRental1, addRental2, addRental3, addRental4, addRental5, addRental6, addRental7, addRental8, addRental9, addRental10;//string variables that represent information about the loan data that will be stored in the database
      addRental1 = "insert into Rental values (110001, 'The Killers - Sams Town', 1234, 'Ann', 'Smyth', #9/01/06#, #9/10/06#, 'Yes', 2.00)";
      addRental2 = "insert into Rental values (120001, 'Mission Impossible 3', 2345, 'John', 'Murphy', #9/02/06#, #9/09/06#, 'No', 0.00)";
      addRental3 = "insert into Rental values (130001, 'Need for Special Carbon', 1324, 'James', 'McFadden', #9/03/06#, #9/12/06#, 'Yes', 2.00)";
      addRental4 = "insert into Rental values (110002, 'Robbie Williams - Rudebox', 1235, 'Frankie', 'Ferry', #9/04/06#, #9/11/06#, 'No', 0.00)";
      addRental5 = "insert into Rental values (120015, 'Prime', 1236, 'Daniel', 'McKimm', #9/05/06#, #9/14/06#, 'Yes', 2.00)";
      addRental6 = "insert into Rental values (130015, 'FIFA 07', 2346, 'Stephen', 'Doohan', #9/06/06#, #9/13/06#, 'No', 0.00)";
      addRental7 = "insert into Rental values (110009, 'Roxette - Roxette hits', 2347, 'James', 'Ferry', #9/07/06#, #9/16/06#, 'Yes', 2.00)";
      addRental8 = "insert into Rental values (120003, 'The Break Up', 2348, 'Liam', 'Cannon', #9/08/06#, #9/15/06#, 'No', 0.00)";
      addRental9 = "insert into Rental values (130027, 'Gears of War', 2401, 'Ciaran', 'Ferry', #9/09/06#, #9/18/06#, 'Yes', 2.00)";
      addRental10 = "insert into Rental values (110021, 'Scooter - Mind the Gap', 2402, 'Ciaran', 'McGee', #9/10/06#, #9/17/06#, 'No', 0.00)";
      try{
         stmt = con.createStatement();//Creates a Statement object for sending SQL statements to the database
               //statements are allowed to be made once a connection is set up
               stmt.executeUpdate(addRental1);
         stmt.executeUpdate(addRental2);
         stmt.executeUpdate(addRental3);
               stmt.executeUpdate(addRental4);
               stmt.executeUpdate(addRental5);
               stmt.executeUpdate(addRental6);
               stmt.executeUpdate(addRental7);
               stmt.executeUpdate(addRental8);
               stmt.executeUpdate(addRental9);
               stmt.executeUpdate(addRental10);
         stmt.close();//closes the Statement object
         con.close();//terminates the connection with the database
      }//end try
          catch(SQLException ex) {
         System.err.println("SQLException: " + ex.getMessage());//returns an SQL error message
      }//end catch
   }//end maintainRentalDetails
   public Demo(){//a constructor
      super("Demo Test Frame");//overrides the constructor
      setSize(350, 200);//Resizes this component so that it has width of 350 and height of 200
      comboBox = new JComboBox();//invokes the class JComboBox
      comboBox.addItem("jdbc:odbc:VideoLibrary");//adds the specified item to the end of the scrolling list
      qtm = new QueryTableModel();//invokes the class QueryTableModel
      JTable table = new JTable(qtm);//a class that shows and changes regular two-dimensional tables of cells
      JScrollPane scrollpane = new JScrollPane(table);//a class that provides a scrollable view of a lightweight component
      JPanel p1 = new JPanel();//a class that puts the combo box and query field in a panel
      p1.setLayout(new GridLayout(3, 2));//Sets the layout manager for this container
      p1.add(comboBox);//Appends the specified component to the end of this container
      p1.add(new JLabel("Enter your query: "));//Appends the specified component to the end of this container
      p1.add(queryField = new JTextField());//Appends the specified component to the end of this container
      p1.add(new JLabel("Click here to send: "));//Appends the specified component to the end of this container
      JButton jb = new JButton("Search");//a class that is an implementation of a "push" button
      jb.addActionListener(new ActionListener(){//Adds an ActionListener to the button
         public void actionPerformed(ActionEvent e){
            qtm.setHostURL();//invokes the method setHostURL
            qtm.setQuery(queryField.getText().trim());//invokes the method setQuery; and returns the text that is presented by this text component and returns a copy of the string, with leading and trailing whitespaces omitted
      } );//end addActionListener
      p1.add(jb);//Appends the specified component to the end of this container
      getContentPane().add(p1, BorderLayout.NORTH);//Returns the content pane
      getContentPane().add(scrollpane, BorderLayout.CENTER);//Returns the content pane
   }//end Demo
}//end class Demo
import java.sql.*;//Provides the API for accessing and processing data stored in a data source using the Java programming language
import java.io.*;//Provides for system input and output through data streams, serialization and the file system
import java.util.Vector;//provides a class that implements a growable array of objects
import javax.swing.*;//Provides a set of lightweight components that, to the maximum degree possible, work the same on all platforms
import javax.swing.table.*;//Provides classes and interfaces for dealing with javax.swing.JTable
public class QueryTableModel extends AbstractTableModel{
     Vector cache;//a class that constructs an empty vector so that its internal data array has size 10 and its standard capacity increment is zero
     int colCount;//a variable that counts the number of columns in the three tables
     String[] headers;//a class that represents character strings and all string literals in this program are implemented as instances of the String class
     Connection db;//an interface that allows a connection to be made to a database
     Statement statement;//an interface that allows executes the given SQL statement, which returns a single ResultSet object
     String currentURL;//a variable that allows the URL to be displayed in a combo box
     public QueryTableModel(){//a constructor
          cache=new Vector();//constructs an empty vector so that its internal data array has size 10 and its standard capacity increment is zero
          try{
         Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");//used by opening a JDBC connection using an URL
          }//end try
          catch(Exception e){
               System.out.println("problem loading the driver ");//an error message
          }//end catch
     }//end QueryTableModel
     public String getColumnName(int i){//Returns the designated column's name
        return headers;//returns the name of each column in the three table
     }//end getColumnName
     public int getColumnCount(){//Returns the number of columns in the column model
     return colCount;//returns the number of columns in the three tables
     }//end getColumnCount
     public int getRowCount(){//Returns the number of rows in this table's model
     return cache.size();//returns the number of components in the vector
     }//end getRowCount
     public Object getValueAt(int row, int col){//Returns the cell value at row and column
          return ((String[])cache.elementAt(row))[col];//Returns the component at the specified index
     }//end getValueAt
     public void setHostURL(){//sets the URL for the database
     String url = "jdbc:odbc:VideoLibrary";//a variable that allows a connection to be made to a database called VideoLibrary
     closeDB();//invokes the method closeDB()
          try{
db=DriverManager.getConnection(url,"","");//tries to create a connection with the database using the DriverManager class
statement=db.createStatement();//Creates a Statement object for sending SQL statements to the database
}//end try
catch(Exception e){
System.out.println("Could not initialize the database.");//an error message
e.printStackTrace();//a Throwable method that prints this throwable and it's backtrace to the standard error stream
}//end catch
     }//end setHostURL
public void setQuery(String q){//sets the kind of query that is to be sent to the database
          cache=new Vector();//constructs an empty vector so that its internal data array has size 10 and its standard capacity increment is zero
String s="select * from Product";//a variable that causes all the data that is in the product table to be displayed in a JTable, which also means that all the data that is in both the member and rental tables can also be displayed in a JTable
          try{
               ResultSet rs=statement.executeQuery(q);//an interface that is used to generate a database result set by executing a statement that queries the database
               ResultSetMetaData meta=rs.getMetaData();//an interface that is used to get information about the types and properties of the columns in a ResultSet object
               colCount=meta.getColumnCount();//Returns the number of columns in this ResultSet object
               headers=new String[colCount];//gets the name of each column in the three tables
               for(int h=1;h<=colCount;h++){
                    headers[h-1]=meta.getColumnName(h);//Get the designated column's name
               }//end for
               while(rs.next()){
                    String[] record=new String[colCount];//stores the name of each column in the three tables in memory
                    for(int i=0;i<colCount;i++){
                         record[i]=rs.getString(i+1);//Retrieves the value of the designated column in the current row of this ResultSet object as a String
                    }//end for
                    cache.addElement(record);//Adds the specified component to the end of this vector, increasing its size by one
               }//end while
               fireTableChanged(null);//Forwards the given notification event to all TableModelListeners that registered themselves as listeners for this table model
          }//end try
          catch(Exception e){
               cache=new Vector();//constructs an empty vector so that its internal data array has size 10 and its standard capacity increment is zero
               e.printStackTrace();//a Throwable method that prints this throwable and it's backtrace to the standard error stream
          }//end catch
     }//end setQuery
     public void initDB(String url){
          try{
               db=DriverManager.getConnection(url);//tries to create a connection with the database using the DriverManager class
               statement=db.createStatement();//Creates a Statement object for sending SQL statements to the database
          }//end try
          catch(Exception e){
               System.out.println("Could not initialize the database.");//an error message
               e.printStackTrace();//a Throwable method that prints this throwable and it's backtrace to the standard error stream
          }//end catch
     }//end initDB
     public void closeDB(){
          try{
               if(statement!=null){
               statement.close();//Releases this Statement object's database and JDBC resources immediately instead of waiting for this to happen when it is automatically closed
               }//end if
               if(db!=null){
               db.close();//Releases this Connection object's database and JDBC resources immediately instead of waiting for them to be automatically released
               }//end if
          }//end try
          catch(Exception e){
               System.out.println("Could not close the current connection.");//an error message
               e.printStackTrace();//a Throwable method that prints this throwable and it's backtrace to the standard error stream
          }//end catch
     }//end closeDB
}//end class QueryTableModel

here's an uncommented version of the code.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.JOptionPane;
import java.sql.*;
public class Demo extends JFrame{
   static String url = "jdbc:odbc:VideoLibrary";
   static Statement stmt;
   static Connection con;
   JTextField hostField;
   JTextField queryField;
   QueryTableModel qtm;
   JComboBox comboBox;
   public static void main(String args[]){
      int choice=-1;
      do{
         choice=getChoice();
         if(choice!=0){
            getSelected(choice);
      }while(choice!=5);
      System.exit(0);
   public static int getChoice(){
      String choice;
      int ch;
      choice = JOptionPane.showInputDialog(null,"1. Maintain product details\n"+"2. Maintain member details\n"+"3. Maintain rental details\n"+"4. View product, member and rental details\n"+"5. Log Off\n\n"+"Enter your choice");
      ch = Integer.parseInt(choice);
      return ch;
   public static void getSelected(int choice){
      if(choice==1){
         maintainProductDetails();
      if(choice==2){
         maintainMemberDetails();
      if(choice==3){
         maintainRentalDetails();
      if(choice==4){
         Demo test = new Demo();
         test.setVisible(true);
   public static Connection getConnection(){
      try {
         Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
      catch(java.lang.ClassNotFoundException e){
         System.err.print("ClassNotFoundException: ");
         System.err.println(e.getMessage());
      try {
         con=DriverManager.getConnection(url,"","");
      catch(SQLException ex) {
         System.err.println("SQLException: " + ex.getMessage());
      return con;
   public static void maintainProductDetails(){
      Connection con = getConnection();
      String addProduct1, addProduct2, addProduct3, addProduct4, addProduct5, addProduct6, addProduct7, addProduct8, addProduct9, addProduct10;
      addProduct1 = "insert into Product values (110001, 'The Killers - Sams Town', 5.00, 'G', 'CD', 2006)";
      addProduct2 = "insert into Product values (110002, 'Robbie Williams - Rudebox', 5.00, 'G', 'CD', 2006)";
      addProduct3 = "insert into Product values (110003, 'Razorlight - Razorlight', 5.00, 'G', 'CD', 2006)";
      addProduct4 = "insert into Product values (110004, 'My Chemical Romance - The Black Parade', 5.00, 'G', 'CD', 2006)";
      addProduct5 = "insert into Product values (110005, 'Snow Patrol - Eyes Open', 5.00, 'G', 'CD', 2006)";
      addProduct6 = "insert into Product values (110006, 'Scissor Sisters - Ta-Dah!', 5.00, 'G', 'CD', 2006)";
      addProduct7 = "insert into Product values (110007, 'Lovesounds - Justin Timberlake', 5.00, 'G', 'CD', 2006)";
      addProduct8 = "insert into Product values (110008, 'Director - We thrive on big cities', 5.00, 'G', 'CD', 2006)";
      addProduct9 = "insert into Product values (110009, 'Roxette - Roxette hits', 5.00, 'G', 'CD', 2006)";
      addProduct10 = "insert into Product values (110010, '***** Cat Dolls - PCD', 5.00, 'G', 'CD', 2006)";
      try {
         stmt = con.createStatement();
         stmt.executeUpdate(addProduct1);
         stmt.executeUpdate(addProduct2);
         stmt.executeUpdate(addProduct3);
         stmt.executeUpdate(addProduct4);
         stmt.executeUpdate(addProduct5);
         stmt.executeUpdate(addProduct6);
         stmt.executeUpdate(addProduct7);
         stmt.executeUpdate(addProduct8);
         stmt.executeUpdate(addProduct9);
         stmt.executeUpdate(addProduct10);
         stmt.close();
         con.close();
      catch(SQLException ex) {
         System.err.println("SQLException: " + ex.getMessage());
   public static void maintainMemberDetails(){
      Connection con = getConnection();
      String addMember1, addMember2, addMember3, addMember4, addMember5, addMember6, addMember7, addMember8, addMember9, addMember10;
      addMember1 = "insert into Member values (1234, 'Ann', 'Smyth', 'Upper Killult, Falcarragh, Co. Donegal', '(074)-9135210', '(087)-2030172', #5/11/85#, #5/12/06#)";
      addMember2 = "insert into Member values (2345, 'John', 'Murphy', 'Lower Killult, Falcarragh, Co. Donegal', '(074)-9135211', '(087)-2030173', #4/12/85#, #6/13/06#)";
      addMember3 = "insert into Member values (1324, 'James', 'McFadden', 'Lower Ardsbeg, Gortahork, Co. Donegal', '(074)-9165314', '(087)-2030171', #4/11/85#, #6/14/06#)";
      addMember4 = "insert into Member values (1235, 'Frankie', 'Ferry', 'Ardsmore, Gortahork, Co. Donegal', '(074)-9165325', '(087)-2031234', #6/13/60#, #6/15/06#)";
      addMember5 = "insert into Member values (1236, 'Daniel', 'McKimm', 'Ballyness, Falcarragh, Co. Donegal', '(074)-9135212', '(087)-2030184', #5/14/73#, #6/16/06#)";
      addMember6 = "insert into Member values (2346, 'Stephen', 'Doohan', 'Ballyness, Falcarragh, Co. Donegal', '(074)-9135213', '(087)-2030185', #6/13/85#, #5/13/06#)";
      addMember7 = "insert into Member values (2347, 'James', 'Ferry', 'Meenlaragh, Gortahork, Co.Donegal', '(074)-9165360', '(087)-2031345', #9/12/85#, #5/14/06#)";
      addMember8 = "insert into Member values (2348, 'Liam', 'Cannon', 'Derryconner, Gortahork, Co.Donegal', '(074)-9165324', '(087)-2031456', #4/11/86#, #5/15/06#)";
      addMember9 = "insert into Member values (2401, 'Ciaran', 'Ferry', 'Brinalack, Gweedore, Co.Donegal', '(074)-9176425', '(087)-2030282', #9/12/85#, #5/16/06#)";
      addMember10 = "insert into Member values (2402, 'Ciaran', 'McGee', 'Derrybeg, Gweedore, Co.Donegal', '(074)-9176536', '(087)-2030393', #9/14/85#, #5/18/06#)";
      try{
         stmt = con.createStatement();
         stmt.executeUpdate(addMember1);
         stmt.executeUpdate(addMember2);
         stmt.executeUpdate(addMember3);
         stmt.executeUpdate(addMember4);
         stmt.executeUpdate(addMember5);
         stmt.executeUpdate(addMember6);
         stmt.executeUpdate(addMember7);
         stmt.executeUpdate(addMember8);
         stmt.executeUpdate(addMember9);
         stmt.executeUpdate(addMember10);
         stmt.close();
         con.close();
      catch(SQLException ex) {
         System.err.println("SQLException: " + ex.getMessage());
   public static void maintainRentalDetails(){
      Connection con = getConnection();
      String addRental1, addRental2, addRental3, addRental4, addRental5, addRental6, addRental7, addRental8, addRental9, addRental10;
      addRental1 = "insert into Rental values (110001, 'The Killers - Sams Town', 1234, 'Ann', 'Smyth', #9/01/06#, #9/10/06#, 'Yes', 2.00)";
      addRental2 = "insert into Rental values (120001, 'Mission Impossible 3', 2345, 'John', 'Murphy', #9/02/06#, #9/09/06#, 'No', 0.00)";
      addRental3 = "insert into Rental values (130001, 'Need for Special Carbon', 1324, 'James', 'McFadden', #9/03/06#, #9/12/06#, 'Yes', 2.00)";
      addRental4 = "insert into Rental values (110002, 'Robbie Williams - Rudebox', 1235, 'Frankie', 'Ferry', #9/04/06#, #9/11/06#, 'No', 0.00)";
      addRental5 = "insert into Rental values (120015, 'Prime', 1236, 'Daniel', 'McKimm', #9/05/06#, #9/14/06#, 'Yes', 2.00)";
      addRental6 = "insert into Rental values (130015, 'FIFA 07', 2346, 'Stephen', 'Doohan', #9/06/06#, #9/13/06#, 'No', 0.00)";
      addRental7 = "insert into Rental values (110009, 'Roxette - Roxette hits', 2347, 'James', 'Ferry', #9/07/06#, #9/16/06#, 'Yes', 2.00)";
      addRental8 = "insert into Rental values (120003, 'The Break Up', 2348, 'Liam', 'Cannon', #9/08/06#, #9/15/06#, 'No', 0.00)";
      addRental9 = "insert into Rental values (130027, 'Gears of War', 2401, 'Ciaran', 'Ferry', #9/09/06#, #9/18/06#, 'Yes', 2.00)";
      addRental10 = "insert into Rental values (110021, 'Scooter - Mind the Gap', 2402, 'Ciaran', 'McGee', #9/10/06#, #9/17/06#, 'No', 0.00)";
      try{
         stmt = con.createStatement();
         stmt.executeUpdate(addRental1);
         stmt.executeUpdate(addRental2);
         stmt.executeUpdate(addRental3);
         stmt.executeUpdate(addRental4);
         stmt.executeUpdate(addRental5);
         stmt.executeUpdate(addRental6);
         stmt.executeUpdate(addRental7);
         stmt.executeUpdate(addRental8);
         stmt.executeUpdate(addRental9);
         stmt.executeUpdate(addRental10);
         stmt.close();
         con.close();
      catch(SQLException ex) {
         System.err.println("SQLException: " + ex.getMessage());
   public Demo(){
      super("Demo Test Frame");
      setSize(350, 200);
      comboBox = new JComboBox();
      comboBox.addItem("jdbc:odbc:VideoLibrary");
      qtm = new QueryTableModel();
      JTable table = new JTable(qtm);
      JScrollPane scrollpane = new JScrollPane(table);
      JPanel p1 = new JPanel();
      p1.setLayout(new GridLayout(3, 2));
      p1.add(comboBox);
      p1.add(new JLabel("Enter your query: "));
      p1.add(queryField = new JTextField());
      p1.add(new JLabel("Click here to send: "));
      JButton jb = new JButton("Search");
      jb.addActionListener(new ActionListener(){
         public void actionPerformed(ActionEvent e){
            qtm.setHostURL();
            qtm.setQuery(queryField.getText().trim());
      p1.add(jb);
      getContentPane().add(p1, BorderLayout.NORTH);
      getContentPane().add(scrollpane, BorderLayout.CENTER);
import java.sql.*;
import java.io.*;
import java.util.Vector;
import javax.swing.*;
import javax.swing.table.*;
public class QueryTableModel extends AbstractTableModel{
     Vector cache;
     int colCount;
     String[] headers;
     Connection db;
     Statement statement;
     String currentURL;
     public QueryTableModel(){
          cache=new Vector();
          try{
         Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
          catch(Exception e){
               System.out.println("problem loading the driver ");
     public String getColumnName(int i){
        return headers;
     public int getColumnCount(){
     return colCount;
     public int getRowCount(){
     return cache.size();
     public Object getValueAt(int row, int col){
          return ((String[])cache.elementAt(row))[col];
     public void setHostURL(){
     String url = "jdbc:odbc:VideoLibrary";
     closeDB();
          try{
db=DriverManager.getConnection(url,"","");
statement=db.createStatement();
catch(Exception e){
System.out.println("Could not initialize the database.");
e.printStackTrace();
public void setQuery(String q){
          cache=new Vector();
String s="select * from Product";
          try{
               ResultSet rs=statement.executeQuery(q);
               ResultSetMetaData meta=rs.getMetaData();
               colCount=meta.getColumnCount();
               headers=new String[colCount];
               for(int h=1;h<=colCount;h++){
                    headers[h-1]=meta.getColumnName(h);
               while(rs.next()){
                    String[] record=new String[colCount];
                    for(int i=0;i<colCount;i++){
                         record[i]=rs.getString(i+1);
                    cache.addElement(record);
               fireTableChanged(null);
          catch(Exception e){
               cache=new Vector();
               e.printStackTrace();
     public void initDB(String url){
          try{
               db=DriverManager.getConnection(url);
               statement=db.createStatement();
          catch(Exception e){
               System.out.println("Could not initialize the database.");
               e.printStackTrace();
     public void closeDB(){
          try{
               if(statement!=null){
               statement.close();
               if(db!=null){
               db.close();
          catch(Exception e){
               System.out.println("Could not close the current connection.");
               e.printStackTrace();

How to get triggering sql text in a statement trigger

hi,
I need to get sql text that run on the table in statement trigger on that table. I will log sql statements that run on table for a few weeks. I search for it, there is a ORA_SQL_TEXT function but this function is working on event triggers not statement or for each row triggers.
is there any other way to achive that ?

You can use AUDIT
http://docs.oracle.com/cd/E11882_01/server.112/e26088/statements_4007.htm#i2115972
>
Auditing Queries on a Table: Example To choose auditing for every SQL statement that queries the employees table in the schema hr, issue the following statement:
AUDIT SELECT
ON hr.employees;
To choose auditing for every statement that successfully queries the employees table in the schema hr, issue the following statement:
AUDIT SELECT
ON hr.employees
WHENEVER SUCCESSFUL;
To choose auditing for every statement that queries the employees table in the schema hr and results in an Oracle Database error, issue the following statement:
AUDIT SELECT
ON hr.employees
WHENEVER NOT SUCCESSFUL;
Auditing Inserts and Updates on a Table: Example To choose auditing for every statement that inserts or updates a row in the customers table in the schema oe, issue the following statement:
AUDIT INSERT, UPDATE
ON oe.customers;

Do you know why oracle queries many times sys.props$ for BACK_END_DB

I noticed that oracle executes the following query too many times.
select p.value$, lengthb(p.value$)
from
sys.props$ p where p.name = 'BACK_END_DB'
Oracle 9i DB
This query is not executed into a form, report, package or procedure.
Question is:
Do you know why oracle queries many times sys.props$ for BACK_END_DB?
or how can we avoid it?
Regards
Marcos Galeana

Hi,
Internal table sys.props$ contains data for some oracle parameter/variables. Oracle makes internal calls to its internal tables for many fornt end SQL statements (recursive queries). So do not worry about those internals calls.
Regards

Maintaining SQL Queries in a separate text file

Hi,
I am working on web based project using Spring MVC framework and I am maintaining all SQL queries in a separate text file so that I can change them any time when needed. I just want to know am I doing right, it this a optmistict way of coding??

>
I am working on web based project using Spring MVC framework and I am maintaining all SQL queries in a separate text file so that I can change them any time when needed. I just want to know am I doing right, it this a optmistict way of coding??
>
The best place to store the queries, and HOW to store them depends on your architecture and on how your application is being used.
Is this a single-user application on a user's pc? Or is your application located on an application server in the middle-tier?
The queries should be stored where they will be used. Your queries should be stored in the tier where your application code will reside. On the client PC for a single-user app, on the application server for a 3-tier app and incorporated into stored procedures/functions/packages if part of a database app.
If your application is totally external to the database (e.g. a reporting app) then it doesn't make sense for you to become part of the database architecture. An org isn't going to let you create objects in the database to store your queries when your queries are not part of the database application. That puts the burden on them to backup your objects, restore them for your and provide support to you and your application.
What format to store the queries in is a different issue. A major criteria is the type of queries you are using and how they are used. Many apps that query the database cannot just use hard-coded queries that are never modified. Users need to be able to provide parameters (e.g. name, ID, state, etc) to select just the data that they want.
That means the base query itself may not even be valid syntax but needs to have a WHERE clause added. Prepared statements and queries that use bind variables ('WHERE ID = ?') are typically used for these.
One method of storage is to use Java property files that use name=value pairs. Using property files makes it easy to use Java to find a query by name and load it for you. Then your code would have functionality to modify the query to provide the parameter 'bind' values and execute it.
There are also frameworks available for handling database related functionality. There is no need for you to write your own libraries for this. I suggest you locate a suitable framework to use.

SetAdditionalJoinExpression and Named Queries...

Hi, is it possible to use DescriptorQueryManager.setAdditionalJoinExpression() to append additional filters to sql statement named queries?
I've tried this but it doesn't seem to have any effect. If this is not possible, do you know of any alternative methods?
Thanks for you help!
-Tim Watson

Yes, if you set the DescriptorQueryManager additionalJoinExpression the expression will be anded will all queries for that descriptor.
Ensure that you set the additionalJoinExpression before you login.

How is the db connection used... and how to use the queries

dear sir,
i have to important question.
i am pasting the code of a jsp file below.... please look in to this...
in this page.. how is he making a database connection... and in this page
where are the select statements and queries.... i have tried many times reading
this ..but i could not find the queries ..not even any one.
if anyone sees this jsp file also ... he will not be able to see the queries.
can u please help me .. how to do this type of connection and also how to use queries
like select insert and delete and update .
an example will help me out...please help me...
Ramesh
the file is below....
<%@ include file="jtfincl.jsp" %>
<%@ page language="java" %>
<%@ page import="oracle.apps.ibu.common.IBUContext" %>
<%@ page import="oracle.apps.ibu.common.IbuException" %>
<%@ page import="oracle.apps.ibu.common.Employee" %>
<%@ page import="oracle.apps.ibu.common.EmployeeInfo" %>
<%@ page import="oracle.jdbc.driver.*" %>
<%@ page import="oracle.apps.jtf.aom.transaction.*" %>
<%@ page import="oracle.apps.jtf.base.resources.*" %>
<%@ page import="oracle.apps.jtf.base.interfaces.MessageManagerInter"%>
<%@ page import="oracle.apps.ibu.registration.IbuRegistration" %>
<%@ page import="oracle.apps.ibu.registration.CustomerVO" %>
<%@ page import="oracle.apps.ibu.common.IDNamePair" %>
<%@ page import="oracle.apps.ibu.common.*" %>
<%@ page import="oracle.apps.ibu.registration.*" %>
<%@ page import="java.math.BigDecimal" %>
<jsp:useBean id = "_displayManager"
class = "oracle.apps.ibu.common.DisplayManager"
scope = "application" />
<jsp:useBean id = "ibuPromptManager"
class = "oracle.apps.ibu.common.PromptManager"
scope = "application" />
<%
String appName= "IBU";
boolean stateless=true;      // used for jtfsrfp.jsp
SiteProperty.load();
String username = SiteProperty.getGuestUsername();
String password = SiteProperty.getGuestPassword();
%>
<%@ include file="jtfsrfp.jsp" %>
<%
     String forwardURL = null;
     String backURL = null;
String emailAddress = null;
     long employeeID = -1;
     String submitType = (String) request.getParameter("submitType");
     IBUContext context = new IBUContext(fwSession);
     String errorKey = "";
     String errorMessage = "";
     String errorStack = "";
     boolean currentStatus = true;
Object lockx = new Object ();
     OracleConnection conn = null;
try
     TransactionScope.begin(lockx);
try
conn = (OracleConnection)
TransactionScope.getConnection();
     catch ( Exception e )
throw new FrameworkException("Error getting connection..");
if ( conn == null )
throw new FrameworkException("Error getting connection..");
     String[] textMsgs = new String[3];
     MessageManagerInter msgMgr = Architecture.getMessageManagerInstance();
     textMsgs[0] = msgMgr.getMessage("IBU_RG_CONTRACT24");
     //textMsgs[0] = " is not a valid employee email address.";
     textMsgs[1] = msgMgr.getMessage("IBU_RG_CONTRACT25");
     //textMsgs[1] = " Cannot get the employee id.";
     textMsgs[2] = msgMgr.getMessage("IBU_RG_CONTRACT13");
     //textMsgs[2] = "submitType is null, please check program.";
     if ( (submitType != null) && "LOGIN".equals( submitType ) )
     forwardURL="jtflogin.jsp";
     backURL="jtflogin.jsp";
     else if ( (submitType != null) && "EMPLOYEE_CHECK".equals( submitType ) )
     forwardURL="ibuemplcheck.jsp";
     backURL="ibuemplcheck.jsp";
     else if ( (submitType != null) && "EMPLOYEE_NUMBER_SUBMIT".equals( submitType ) )
     backURL="ibuemplcheck.jsp";
emailAddress = (String) request.getParameter("emailAddress");
     pageContext.setAttribute("emailAddress", emailAddress , PageContext.REQUEST_SCOPE);
     employeeID = IbuRegistration.getEmployeeID(conn,emailAddress);
     if (employeeID == -1)
          throw new IbuRegException(emailAddress + " "+textMsgs[0] + " " +textMsgs[1]);
     //validate employee
currentStatus = Employee.isValidate(conn,emailAddress);
//currentStatus = IbuRegistration.isEmployeeValid(conn,emailAddress);
     if (!currentStatus)
          throw new IbuRegException(emailAddress + " " + textMsgs[0]);
     EmployeeInfo employee = Employee.findEmployee(conn,employeeID);
     pageContext.setAttribute("employee", employee , PageContext.REQUEST_SCOPE);
     pageContext.setAttribute("employeeIDStr", Long.toString(employeeID) , PageContext.REQUEST_SCOPE);
     forwardURL="ibuemplinput.jsp";
     else
     { // Cancel button was pressed
     throw new IbuRegException(textMsgs[2]);
     /* "ibuccsii.jsp"; */
     catch ( IbuException e )
TransactionScope.setRollbackOnly();
     errorMessage = e.getMessage();
     errorStack = IbuRegException.getStack(e);
     pageContext.setAttribute("errorMessage", errorMessage , PageContext.REQUEST_SCOPE);
     pageContext.setAttribute("errorStack", errorStack , PageContext.REQUEST_SCOPE);
     forwardURL = backURL;
     catch (IbuRegException e)
TransactionScope.setRollbackOnly();
     errorMessage = e.getMessage();
     errorStack = e.getStack();
     pageContext.setAttribute("errorMessage", errorMessage , PageContext.REQUEST_SCOPE);
     pageContext.setAttribute("errorStack", errorStack , PageContext.REQUEST_SCOPE);
     forwardURL = backURL;
     catch ( Exception e )
TransactionScope.setRollbackOnly();
     errorMessage = e.getMessage();
     errorStack = IbuRegException.getStack(e);
     pageContext.setAttribute("errorMessage", errorMessage , PageContext.REQUEST_SCOPE);
     pageContext.setAttribute("errorStack", errorStack , PageContext.REQUEST_SCOPE);
     forwardURL = backURL;
//throw new FrameworkException( e , "IBU_UNEXPECTED_EXCEPTION");
     finally
TransactionScope.releaseConnection( conn );
TransactionScope.end ( lockx );
     if (forwardURL == null)
     forwardURL="jtflogin.jsp";
%>
     <jsp:forward page= "<%= forwardURL %>" />
<%@ include file="jtferlp.jsp" %>

dear sir,
i have to important question.
i am pasting the code of a jsp file below.... please look in to this...Note that this is an OCI forum. Since your code is using Oracle's JDBC driver to connect, I would suggest posting in the JDBC forum for more information.
in this page.. how is he making a database connection...
try
conn = (OracleConnection)
TransactionScope.getConnection();
     catch ( Exception e )
throw new FrameworkException("Error getting connection..");
and in this page
where are the select statements and queries.... There may be queries in the Employee objects or in the include files.
Justin

Keep log sql statement

Dear all,
Is there any ways to keep log sql statement after insert,update,delete as the example below :
==========================================
user01 client01 prog01.exe update emp set name='test';
user02 client02 prog02.exe delete from emp1;
I 'm not sure.Can use trigger? Is anybody have the example code?
Oracle9i + windows2000
Thank you for advance
Chara

Hi,
Here is a small resumen About Basic Auditing in Oracle.
For any Oracle versions prior to 9i you will need to set audit_trail parameter in the pfile ie.g.:
audit_trail = DBFor later Oracle Versions:
SQL>alter system set audit_trail = DB;To enable auditing for a specific object run the following command:
SQL>AUDIT SELECT, INSERT, UPDATE, DELETE ON SCHEMA.TABLE;To stop auditing use:
SQL>NOAUDIT SELECT, INSERT, UPDATE, DELETE ON SCHEMA.TABLE;Or to audit any statement that queries, delete, insert or updates any table, issue the following statement:
SQL>AUDIT SELECT TABLE, DELETE TABLE, INSERT TABLE, UPDATE TABLE;If you want to audit a specific user will need to run the following commands:
SQL>AUDIT ALTER TABLE, SELECT TABLE, INSERT TABLE, … ,GRANT PROCEDURE by <USERNAME>;To stop the audit for the user you will need to run:
SQL>NOAUDIT ALTER TABLE, SELECT TABLE, INSERT TABLE, … ,GRANT PROCEDURE by <USERNAME>;To see the results of the auditing use please run:
SQL> select * from dba_audit_trail;This is an excellent Oracle documentation to learn how to implement it:
- http://download-uk.oracle.com/docs/cd/B19306_01/network.102/b14266/cfgaudit.htm
Also I’ll recommend you to take a look on the following links:
- http://www.oracle-base.com/articles/8i/Auditing.php
Cheers,
Francisco Munoz Alvarez
http://www.oraclenz.com

Interleaved executeQuery's intermittant SQLException: Closed Statement

When i run the following code using JDK1.3.1 and Oracle 817 i see the line "cats_rs = cats_stmt.executeQuery();" throw a "SQLException: Closed Statement." about 1 out of 10 times.
All variables, except the connection, are local. the statement example below are just 2 among dozens of others - all using the same connection.
Any ideas why i'd get an intermittant exception like this?
It is totally stumping me. thanks in advance.
memory_stmt = connection.prepareStatement(memory_sql,
ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_READ_ONLY);
cats_stmt = connection.prepareStatement(cats_sql,
ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_READ_ONLY);
index = 1;
memory_stmt.setString(index++, host);
memory_stmt.setString(index++, jvm);
memory_stmt.setLong(index++, starttime);
memory_stmt.setLong(index++, endtime);
memory_rs = memory_stmt.executeQuery();
index = 1;
cats_stmt.setString(index++, host);
cats_stmt.setString(index++, jvm);
cats_stmt.setLong(index++, starttime);
cats_stmt.setLong(index++, endtime);
cats_rs = cats_stmt.executeQuery();
E.g.
java.sql.SQLException: Closed Statement
     at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:180)
     at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:222)
     at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:285)
     at oracle.jdbc.driver.OracleStatement.ensureOpen(OracleStatement.java:5681)
     at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:409)
     at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:366)
Thx, Tim

I had a hunch that this was a limitation or bug in the driver or pool. I also read in forums that the connection "manages" each Statement it prepares or creates; like it adds it to a List and such ; it also cleans the slate each time the connection is closed.
This code example above is just a small snippit that summarizes over a long time range of data (like days) - that is potentially 1000s of statements and queries and result sets.
It is probably not very common that with jdbc someone prepares and executes 1000s of queries on the same connection over a course of 2 - 10 minutes (that's how long the entire operationcould take). I guessed the connection was worn out and tired .
I changed the code to get a connection and then close the connection periodically - instead of getting one connection and using it for the whole period. After that all these hard to explain Closed Statement exceptions disappeared.
i think the interleaving queries is OK. I guess the connection was blowing out.

Interleaved executeQuery() generates SQLException: Closed Statement

When i run the following code i see the cats_stmt.executeQuery() line throw a "SQLException: Closed Statement.".
Since I just created the cats_stmt statement - why could it be closed?
The memory_stmt.executeQuery runs without exception.
memory_stmt = connection.prepareStatement(memory_sql,
ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_READ_ONLY);
cats_stmt = connection.prepareStatement(cats_sql,
ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_READ_ONLY);
index = 1;
memory_stmt.setString(index++, host);
memory_stmt.setString(index++, jvm);
memory_stmt.setLong(index++, starttime);
memory_stmt.setLong(index++, endtime);
memory_rs = memory_stmt.executeQuery();
index = 1;
cats_stmt.setString(index++, host);
cats_stmt.setString(index++, jvm);
cats_stmt.setLong(index++, starttime);
cats_stmt.setLong(index++, endtime);
cats_rs = cats_stmt.executeQuery(); <<- throws exception.
On JDK1.3.1 and Oracle 817
E.g.
java.sql.SQLException: Closed Statement
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:180)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:222)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:285)
at oracle.jdbc.driver.OracleStatement.ensureOpen(OracleStatement.java:5681)
at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:409)
at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:366)

I had a hunch that this was a limitation or bug in the driver or pool. I also read in forums that the connection "manages" each Statement it prepares or creates; like it adds it to a List and such ; it also cleans the slate each time the connection is closed.
This code example above is just a small snippit that summarizes over a long time range of data (like days) - that is potentially 1000s of statements and queries and result sets.
It is probably not very common that with jdbc someone prepares and executes 1000s of queries on the same connection over a course of 2 - 10 minutes (that's how long the entire operationcould take). I guessed the connection was worn out and tired .
I changed the code to get a connection and then close the connection periodically - instead of getting one connection and using it for the whole period. After that all these hard to explain Closed Statement exceptions disappeared.
i think the interleaving queries is OK. I guess the connection was blowing out.

HOW TO IMPROVE PERFORMANCE

HI ALL ,,,
MY SELECT STATEMENT IS LIKE THIS. IN SM30 ITS SHOWING THAT ITS HAS TAKE THE MAXIMUM TIME. SO HOW CAN I REDUCE THE HITING DB TABLE TIME OR IMPROVE THE PERFORMANCE?
IF LT_JCDS[] IS NOT INITIAL.
    SELECT OBJNR
            WKGBTR
            BELNR
            WRTTP
            BEKNZ
            PERIO
            GJAHR
            VERSN
            KOKRS
            VRGNG
            GKOAR
            BUKRS
            REFBZ_FI
            MBGBTR
            FROM COEP
      INTO CORRESPONDING FIELDS OF TABLE LT_COEP
      FOR ALL ENTRIES IN LT_JCDS
      WHERE KOKRS EQ 'DXES'
      AND OBJNR EQ LT_JCDS-OBJNR
      AND GJAHR <= SO_GJAHR-LOW
      AND VERSN eq '000'
      AND ( VRGNG EQ 'COIN' OR VRGNG EQ 'RKU1' OR VRGNG EQ 'RKL').
      IF SY-SUBRC <> 0.
       MESSAGE e000(8i) WITH 'DATA NOT FOUND IN "CO Object: Line Items (by Period)"'.
     ENDIF.
ENDIF.

Hi
see these points
Ways of Performance Tuning
1.     Selection Criteria
2.     Select Statements
     Select Queries
     SQL Interface
     Aggregate Functions
     For all Entries
Select Over more than one Internal table
Selection Criteria
1.     Restrict the data to the selection criteria itself, rather than filtering it out using the ABAP code using CHECK statement.
2.     Select with selection list.
Points # 1/2
SELECT * FROM SBOOK INTO SBOOK_WA.
CHECK: SBOOK_WA-CARRID = 'LH' AND
         SBOOK_WA-CONNID = '0400'.
ENDSELECT.
The above code can be much more optimized by the code written below which avoids CHECK, selects with selection list
SELECT CARRID CONNID FLDATE BOOKID FROM SBOOK INTO TABLE T_SBOOK
WHERE SBOOK_WA-CARRID = 'LH' AND
              SBOOK_WA-CONNID = '0400'.
Select Statements   Select Queries
1.     Avoid nested selects
2.     Select all the records in a single shot using into table clause of select statement rather than to use Append statements.
3.     When a base table has multiple indices, the where clause should be in the order of the index, either a primary or a secondary index.
4.     For testing existence , use Select.. Up to 1 rows statement instead of a Select-Endselect-loop with an Exit.
5.     Use Select Single if all primary key fields are supplied in the Where condition .
Point # 1
SELECT * FROM EKKO INTO EKKO_WA.
SELECT * FROM EKAN INTO EKAN_WA
      WHERE EBELN = EKKO_WA-EBELN.
ENDSELECT.
ENDSELECT.
The above code can be much more optimized by the code written below.
SELECT PF1 PF2 FF3 FF4 INTO TABLE ITAB
    FROM EKKO AS P INNER JOIN EKAN AS F
      ON PEBELN = FEBELN.
Note: A simple SELECT loop is a single database access whose result is passed to the ABAP program line by line. Nested SELECT loops mean that the number of accesses in the inner loop is multiplied by the number of accesses in the outer loop. One should therefore use nested SELECT loops only if the selection in the outer loop contains very few lines or the outer loop is a SELECT SINGLE statement.
Point # 2
SELECT * FROM SBOOK INTO SBOOK_WA.
CHECK: SBOOK_WA-CARRID = 'LH' AND
         SBOOK_WA-CONNID = '0400'.
ENDSELECT.
The above code can be much more optimized by the code written below which avoids CHECK, selects with selection list and puts the data in one shot using into table
SELECT CARRID CONNID FLDATE BOOKID FROM SBOOK INTO TABLE T_SBOOK
WHERE SBOOK_WA-CARRID = 'LH' AND
              SBOOK_WA-CONNID = '0400'.
Point # 3
To choose an index, the optimizer checks the field names specified in the where clause and then uses an index that has the same order of the fields . In certain scenarios, it is advisable to check whether a new index can speed up the performance of a program. This will come handy in programs that access data from the finance tables.
Point # 4
SELECT * FROM SBOOK INTO SBOOK_WA
UP TO 1 ROWS
WHERE CARRID = 'LH'.
ENDSELECT.
The above code is more optimized as compared to the code mentioned below for testing existence of a record.
SELECT * FROM SBOOK INTO SBOOK_WA
    WHERE CARRID = 'LH'.
EXIT.
ENDSELECT.
Point # 5
If all primary key fields are supplied in the Where condition you can even use Select Single.
Select Single requires one communication with the database system, whereas Select-Endselect needs two.
Select Statements           contd.. SQL Interface
1.     Use column updates instead of single-row updates
to update your database tables.
2.     For all frequently used Select statements, try to use an index.
3.     Using buffered tables improves the performance considerably.
Point # 1
SELECT * FROM SFLIGHT INTO SFLIGHT_WA.
SFLIGHT_WA-SEATSOCC =
    SFLIGHT_WA-SEATSOCC - 1.
UPDATE SFLIGHT FROM SFLIGHT_WA.
ENDSELECT.
The above mentioned code can be more optimized by using the following code
UPDATE SFLIGHT
       SET SEATSOCC = SEATSOCC - 1.
Point # 2
SELECT * FROM SBOOK CLIENT SPECIFIED INTO SBOOK_WA
WHERE CARRID = 'LH'
    AND CONNID = '0400'.
ENDSELECT.
The above mentioned code can be more optimized by using the following code
SELECT * FROM SBOOK CLIENT SPECIFIED INTO SBOOK_WA
WHERE MANDT IN ( SELECT MANDT FROM T000 )
    AND CARRID = 'LH'
    AND CONNID = '0400'.
ENDSELECT.
Point # 3
Bypassing the buffer increases the network considerably
SELECT SINGLE * FROM T100 INTO T100_WA
BYPASSING BUFFER
WHERE     SPRSL = 'D'
        AND ARBGB = '00'
        AND MSGNR = '999'.
The above mentioned code can be more optimized by using the following code
SELECT SINGLE * FROM T100 INTO T100_WA
WHERE     SPRSL = 'D'
        AND ARBGB = '00'
        AND MSGNR = '999'.
Select Statements       contd           Aggregate Functions
     If you want to find the maximum, minimum, sum and average value or the count of a database column, use a select list with aggregate functions instead of computing the aggregates yourself.
Some of the Aggregate functions allowed in SAP are MAX, MIN, AVG, SUM, COUNT, COUNT( * )
Consider the following extract.
            Maxno = 0.
            Select * from zflight where airln = LF and cntry = IN.
             Check zflight-fligh > maxno.
             Maxno = zflight-fligh.
            Endselect.
The above mentioned code can be much more optimized by using the following code.
Select max( fligh ) from zflight into maxno where airln = LF and cntry = IN.
Select Statements    contdFor All Entries
     The for all entries creates a where clause, where all the entries in the driver table are combined with OR. If the number of entries in the driver table is larger than rsdb/max_blocking_factor, several similar SQL statements are executed to limit the length of the WHERE clause.
     The plus
     Large amount of data
     Mixing processing and reading of data
     Fast internal reprocessing of data
     Fast
     The Minus
     Difficult to program/understand
     Memory could be critical (use FREE or PACKAGE size)
Points to be must considered FOR ALL ENTRIES
     Check that data is present in the driver table
     Sorting the driver table
     Removing duplicates from the driver table
Consider the following piece of extract
Loop at int_cntry.
       Select single * from zfligh into int_fligh
where cntry = int_cntry-cntry.
Append int_fligh.
Endloop.
The above mentioned can be more optimized by using the following code.
Sort int_cntry by cntry.
Delete adjacent duplicates from int_cntry.
If NOT int_cntry[] is INITIAL.
            Select * from zfligh appending table int_fligh
            For all entries in int_cntry
            Where cntry = int_cntry-cntry.
Endif.
Select Statements    contd Select Over more than one Internal table
1.     Its better to use a views instead of nested Select statements.
2.     To read data from several logically connected tables use a join instead of nested Select statements. Joins are preferred only if all the primary key are available in WHERE clause for the tables that are joined. If the primary keys are not provided in join the Joining of tables itself takes time.
3.     Instead of using nested Select loops it is often better to use subqueries.
Point # 1
SELECT * FROM DD01L INTO DD01L_WA
WHERE DOMNAME LIKE 'CHAR%'
        AND AS4LOCAL = 'A'.
SELECT SINGLE * FROM DD01T INTO DD01T_WA
    WHERE   DOMNAME    = DD01L_WA-DOMNAME
        AND AS4LOCAL   = 'A'
        AND AS4VERS    = DD01L_WA-AS4VERS
        AND DDLANGUAGE = SY-LANGU.
ENDSELECT.
The above code can be more optimized by extracting all the data from view DD01V_WA
SELECT * FROM DD01V INTO DD01V_WA
WHERE DOMNAME LIKE 'CHAR%'
        AND DDLANGUAGE = SY-LANGU.
ENDSELECT
Point # 2
SELECT * FROM EKKO INTO EKKO_WA.
SELECT * FROM EKAN INTO EKAN_WA
      WHERE EBELN = EKKO_WA-EBELN.
ENDSELECT.
ENDSELECT.
The above code can be much more optimized by the code written below.
SELECT PF1 PF2 FF3 FF4 INTO TABLE ITAB
    FROM EKKO AS P INNER JOIN EKAN AS F
      ON PEBELN = FEBELN.
Point # 3
SELECT * FROM SPFLI
INTO TABLE T_SPFLI
WHERE CITYFROM = 'FRANKFURT'
    AND CITYTO = 'NEW YORK'.
SELECT * FROM SFLIGHT AS F
    INTO SFLIGHT_WA
    FOR ALL ENTRIES IN T_SPFLI
    WHERE SEATSOCC < F~SEATSMAX
      AND CARRID = T_SPFLI-CARRID
      AND CONNID = T_SPFLI-CONNID
      AND FLDATE BETWEEN '19990101' AND '19990331'.
ENDSELECT.
The above mentioned code can be even more optimized by using subqueries instead of for all entries.
SELECT * FROM SFLIGHT AS F INTO SFLIGHT_WA
    WHERE SEATSOCC < F~SEATSMAX
      AND EXISTS ( SELECT * FROM SPFLI
                     WHERE CARRID = F~CARRID
                       AND CONNID = F~CONNID
                       AND CITYFROM = 'FRANKFURT'
                       AND CITYTO = 'NEW YORK' )
      AND FLDATE BETWEEN '19990101' AND '19990331'.
ENDSELECT.
1.     Table operations should be done using explicit work areas rather than via header lines.
2.     Always try to use binary search instead of linear search. But dont forget to sort your internal table before that.
3.     A dynamic key access is slower than a static one, since the key specification must be evaluated at runtime.
4.     A binary search using secondary index takes considerably less time.
5.     LOOP ... WHERE is faster than LOOP/CHECK because LOOP ... WHERE evaluates the specified condition internally.
6.     Modifying selected components using MODIFY itab TRANSPORTING f1 f2.. accelerates the task of updating a line of an internal table.
Point # 2
READ TABLE ITAB INTO WA WITH KEY K = 'X BINARY SEARCH.
IS MUCH FASTER THAN USING
READ TABLE ITAB INTO WA WITH KEY K = 'X'.
If TAB has n entries, linear search runs in O( n ) time, whereas binary search takes only O( log2( n ) ).
Point # 3
READ TABLE ITAB INTO WA WITH KEY K = 'X'. IS FASTER THAN USING
READ TABLE ITAB INTO WA WITH KEY (NAME) = 'X'.
Point # 5
LOOP AT ITAB INTO WA WHERE K = 'X'.
ENDLOOP.
The above code is much faster than using
LOOP AT ITAB INTO WA.
CHECK WA-K = 'X'.
ENDLOOP.
Point # 6
WA-DATE = SY-DATUM.
MODIFY ITAB FROM WA INDEX 1 TRANSPORTING DATE.
The above code is more optimized as compared to
WA-DATE = SY-DATUM.
MODIFY ITAB FROM WA INDEX 1.
7.     Accessing the table entries directly in a "LOOP ... ASSIGNING ..." accelerates the task of updating a set of lines of an internal table considerably
8.    If collect semantics is required, it is always better to use to COLLECT rather than READ BINARY and then ADD.
9.    "APPEND LINES OF itab1 TO itab2" accelerates the task of appending a table to another table considerably as compared to LOOP-APPEND-ENDLOOP.
10.   DELETE ADJACENT DUPLICATES accelerates the task of deleting duplicate entries considerably as compared to READ-LOOP-DELETE-ENDLOOP.
11.   "DELETE itab FROM ... TO ..." accelerates the task of deleting a sequence of lines considerably as compared to DO -DELETE-ENDDO.
Point # 7
Modifying selected components only makes the program faster as compared to Modifying all lines completely.
e.g,
LOOP AT ITAB ASSIGNING <WA>.
I = SY-TABIX MOD 2.
IF I = 0.
    <WA>-FLAG = 'X'.
ENDIF.
ENDLOOP.
The above code works faster as compared to
LOOP AT ITAB INTO WA.
I = SY-TABIX MOD 2.
IF I = 0.
    WA-FLAG = 'X'.
    MODIFY ITAB FROM WA.
ENDIF.
ENDLOOP.
Point # 8
LOOP AT ITAB1 INTO WA1.
READ TABLE ITAB2 INTO WA2 WITH KEY K = WA1-K BINARY SEARCH.
IF SY-SUBRC = 0.
    ADD: WA1-VAL1 TO WA2-VAL1,
         WA1-VAL2 TO WA2-VAL2.
    MODIFY ITAB2 FROM WA2 INDEX SY-TABIX TRANSPORTING VAL1 VAL2.
ELSE.
    INSERT WA1 INTO ITAB2 INDEX SY-TABIX.
ENDIF.
ENDLOOP.
The above code uses BINARY SEARCH for collect semantics. READ BINARY runs in O( log2(n) ) time. The above piece of code can be more optimized by
LOOP AT ITAB1 INTO WA.
COLLECT WA INTO ITAB2.
ENDLOOP.
SORT ITAB2 BY K.
COLLECT, however, uses a hash algorithm and is therefore independent
of the number of entries (i.e. O(1)) .
Point # 9
APPEND LINES OF ITAB1 TO ITAB2.
This is more optimized as compared to
LOOP AT ITAB1 INTO WA.
APPEND WA TO ITAB2.
ENDLOOP.
Point # 10
DELETE ADJACENT DUPLICATES FROM ITAB COMPARING K.
This is much more optimized as compared to
READ TABLE ITAB INDEX 1 INTO PREV_LINE.
LOOP AT ITAB FROM 2 INTO WA.
IF WA = PREV_LINE.
    DELETE ITAB.
ELSE.
    PREV_LINE = WA.
ENDIF.
ENDLOOP.
Point # 11
DELETE ITAB FROM 450 TO 550.
This is much more optimized as compared to
DO 101 TIMES.
DELETE ITAB INDEX 450.
ENDDO.
12.   Copying internal tables by using ITAB2[ ] = ITAB1[ ] as compared to LOOP-APPEND-ENDLOOP.
13.   Specify the sort key as restrictively as possible to run the program faster.
Point # 12
ITAB2[] = ITAB1[].
This is much more optimized as compared to
REFRESH ITAB2.
LOOP AT ITAB1 INTO WA.
APPEND WA TO ITAB2.
ENDLOOP.
Point # 13
SORT ITAB BY K. makes the program runs faster as compared to SORT ITAB.
Internal Tables         contd
Hashed and Sorted tables
1.     For single read access hashed tables are more optimized as compared to sorted tables.
2.      For partial sequential access sorted tables are more optimized as compared to hashed tables
Hashed And Sorted Tables
Point # 1
Consider the following example where HTAB is a hashed table and STAB is a sorted table
DO 250 TIMES.
N = 4 * SY-INDEX.
READ TABLE HTAB INTO WA WITH TABLE KEY K = N.
IF SY-SUBRC = 0.
ENDIF.
ENDDO.
This runs faster for single read access as compared to the following same code for sorted table
DO 250 TIMES.
N = 4 * SY-INDEX.
READ TABLE STAB INTO WA WITH TABLE KEY K = N.
IF SY-SUBRC = 0.
ENDIF.
ENDDO.
Point # 2
Similarly for Partial Sequential access the STAB runs faster as compared to HTAB
LOOP AT STAB INTO WA WHERE K = SUBKEY.
ENDLOOP.
This runs faster as compared to
LOOP AT HTAB INTO WA WHERE K = SUBKEY.
ENDLOOP.

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