How to use the alter statement in Execute

Hi All,
Need your help to solve this issue.
i want the call the alter statement in procedure to load data to the external table.
As per our requirement location will be given as a input parameter.
Created procedure as shown below
CREATE OR REPLACE PROCEDURE apps.rda_cm_postaova_stmt_main (
p_process_name IN VARCHAR2,
p_file_name IN VARCHAR2,
p_submit_option IN VARCHAR2
AS
BEGIN
EXECUTE IMMEDIATE 'ALTER TABLE RDA_POSTOVA_BANK_STMT location' || (p_file_name);
END;
it compiled but while executing it end up in below error:
ORA-01735: invalid ALTER TABLE option
ORA-06512: at "APPS.RDA_CM_POSTAOVA_STMT_MAIN", line 8
ORA-06512: at line 2
Please help to solve this issue.
Thanks
Rajesh

create or replace procedure reset_et_location
( p_table in varchar2
, p_filename in varchar2)
is
begin
execute immediate 'alter table '||p_table||' location ('''||p_filename||''')';
end reset_et_location;

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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
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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{
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     JTextField hostField;//a class that allows a line of text to be changed
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         maintainMemberDetails();//invokes the method maintainMemberDetails()
      }//end if
          if(choice==3){
         maintainRentalDetails();//invokes the method maintainRentalDetails()
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      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)";
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             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
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      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#)";
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         stmt.executeUpdate(addMember3);
               stmt.executeUpdate(addMember4);
               stmt.executeUpdate(addMember5);
               stmt.executeUpdate(addMember6);
               stmt.executeUpdate(addMember7);
               stmt.executeUpdate(addMember8);
               stmt.executeUpdate(addMember9);
               stmt.executeUpdate(addMember10);
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         con.close();//terminates the connection with the database
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      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)";
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      addRental8 = "insert into Rental values (120003, 'The Break Up', 2348, 'Liam', 'Cannon', #9/08/06#, #9/15/06#, 'No', 0.00)";
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               stmt.executeUpdate(addRental1);
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         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
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     }//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 use the column names generated from Dynamic SQL

Hi,
I have a problem with Dynamic SQL.
I have written an SQL which will dynamically generate the Select statement with from and where clause in it.
But that select statement when executed will get me hundreds of rows and i want to insert each row separately into one more table.
For that i have used a ref cursor to open and insert the table.
In the select list the column names will also be as follows: COLUMN1, COLUMN2, COLUMN3,....COLUMNn
Please find below the sample code:
TYPE ref_csr IS REF CURSOR;
insert_csr ref_csr;
v_select VARCHAR2 (4000) := NULL;
v_table VARCHAR2 (4000) := NULL;
v_where VARCHAR2 (4000) := NULL;
v_ins_tab VARCHAR2 (4000) := NULL;
v_insert VARCHAR2 (4000) := NULL;
v_ins_query VARCHAR2 (4000) := NULL;
OPEN insert_csr FOR CASE
WHEN v_where IS NOT NULL
THEN 'SELECT '
|| v_select
|| ' FROM '
|| v_table
|| v_where
|| ';'
ELSE 'SELECT ' || v_select || ' FROM ' || v_table || ';'
END;
LOOP
v_ins_query :=
'INSERT INTO '
|| v_ins_tab
|| '('
|| v_insert
|| ') VALUES ('
|| How to fetch the column names here
|| ');';
EXECUTE IMMEDIATE v_ins_query;
END LOOP;
Please help me out with the above problem.
Edited by: kumar0828 on Feb 7, 2013 10:40 PM
Edited by: kumar0828 on Feb 7, 2013 10:42 PM

>
I Built the statement as required but i need the column list because the first column value of each row should be inserted into one more table.
So i was asking how to fetch the column list in a ref cursor so that value can be inserted in one more table.
>
Then add a RETURNING INTO clause to the query to have Oracle return the first column values into a collection.
See the PL/SQL Language doc
http://docs.oracle.com/cd/B28359_01/appdev.111/b28370/returninginto_clause.htm#sthref2307

How to put the SQL-statement returned value into the field (as a default)

Hi,
I am using Developer/2000 (Forms Designer) under windows 98.
Please tell me how to put the SQL-statement value (as a default value) into the field before enter-query mode. Noted that I have tried the following ways but still some problems:-
1) Place the SQL-statement into PRE_QUERY trigger in the form/block level.
There is a message box which ask 'Do you want to save the changes?'.
2) Place the SQL-statement before execute enter_query. There is still a
message box which ask 'Do you want to save the changes?'.
Any hints? Thanks. Urgent.

solved it!
1) Suppress DEFAULT save message
if form_failure then
raise form_trigger_failure;
end if;
2) Place the default value before enter-query.
Ref: Title='Default value in query field in ENTER_QUERY mode' in designer forum by CVZ
form level trigger
============
WHEN-NEW-ITEM-INSTANCE
=======================
if :system.mode = 'ENTER-QUERY' then
:block.item := 'default waarde';
end if;
3) Suppress the changes whenever leaving the default field.
if :block.item is null then
-- assign statement
end if;

How to use the same POWL query for multiple users

Hello,
I have defined a POWL query which executes properly. But if I map the same POWL query to 2 portal users and the 2 portal users try to access the same page simultaneously then it gives an error message to one of the users that
"Query 'ABC' is already open in another session."
where 'ABC' is the query name.
Can you please tell me how to use the same POWL query for multiple users ?
A fast reply would be highly appreciated.
Thanks and Regards,
Sandhya

Batch processing usually involves using actions you have recorded. In Action you can insert Path that can be used during processing documents. Path have some size so you may want to only process document that have the same size. Look in the Actions Palette fly-out menu for insert path. It inserts|records the current document work path into the action being worked on and when the action is played it inserts the path into the document as the current work path..

How to use an if statement in javascript code

Hello,
I have a batch processing script to search for text "employee signature" on each page in a multiple page file and to then list in the console any pages that do not have the "Employee Signature" text included.
The script is not yet functional as an if statement needs to be included.
Can anyone please advise how to use an if statement in javascript code?
var numpages = this.numPages;
for (var i=0; i < numpages; i++)
search.query("Employee Signature", "ActiveDoc");
console.println('Pages that do not include an employee signature: ' + this.pageNum +' ');
Any assistance will be most appreciated.

Thank you very much for your assistance try.
I have modified the code as suggested and the page numbers are now listing correctly, thank you, but....................,
The console lists every page as having an "employee signature" when there are pages in the document that do not have an employee signature.
The code (revised as follows) is not processing the "getPageNthWord part of the statement" in the console report?
Can you please advise where the code needs reworking?
var ckWords; // word pair to test
var bFound = false; // logical status of found words
// loop through pages
for (var i = 0; i < this.numPages; i++ ) {
   bFound = false; // set found flag to false
   numWords = this.getPageNumWords(i); // number of words on page
   // loop through the words on page
   for (var j = 0; j < numWords; j++) {
      // get word pair to test
      ckWords = this.getPageNthWord(i, j) + ' ' + this.getPageNthWord(i, j + 1); // test words
      // check to see if word pair is 'Employee' string is present
      if ( ckWord == "Employee") {
         bFound = true; // indicate found logical value
         console.println('Pages that includes an employee signature: ' + (i + 1) +' ');
         break; // no need to further test for this page
      } // end Employee Signature
   } // end word loop
   // test to see if words not found
   if(bFound == false) {
         console.println('Pages that do include an employee signature: ' + (i + 1) +' ');
    } // end not found on page
} // end page loop
Thank you

JNI - How to use the error reporting mechanism?

I've developed a C++ DLL which is loaded from a commercial Win32 application (not written by me) as a plug-in for external calculations. On its initialization the C++ DLL launches the Java VM via the JNI invocation interface. When the DLL functions are called by the application, they forward the calls to Java objects inside the Java VM, again via JNI invocation interface.
This works well, but I have encountered a weird error.
From Java I open a JFrame containing a JTextArea as small console for debug output messages. If I turn output to this debug console off (my printToConsole routine checks whether a boolean flag is set), the string concatenation operator may lead to a crash of the Java VM.
For example, if in one of the Java functions called from the
DLL via JNI invocation interface the following is the first statement,
it leads to a crash of the Java VM and the application that loaded the C++ proxy DLL.
String test=""+Math.random(); // String test not used later
Interestingly, if I comment this statement out, the Java code works fine WITHOUT any crash. I've already thought about potential races and synchronization issues in my code, but I don't see where this is the case. And the string concatenation error fails as well, if I insert sleep() statements in front of it and at other places in the code. However, if I turn on log messages printed to my JFrame debug console (containing a JTextArea), the String concatenation works without problems.
So maybe the JNI interface has a bug and affects the Java VM; I don't see where my JNI code is wrong.
One problem is that I do not get any stdout output, as the C++ proxy DLL is loaded by the Windows application, even if I start the Windows application from the DOS command line (under Windows).
Does anyone know how to use the error reporting mechanism?
http://java.sun.com/j2se/1.4.2/docs/guide/vm/error-handling.html
Is it possible that the JVM, when it crashes, writes debug information about the crash into a file instead of stdout/stderr?
My C++ proxy DLL was compiled in debug mode, but the commercial application (which loaded the DLL) is very likely not.
I do not know hot to find the reason why the String concatenation fails inside the Java function called from the C++ DLL via JNI.

Yes, I've initially thought about errors in the C++ code too. But the C++ code is actually very simple and short. It doesn't allocate anything on the C++ side. It allocates a couple of ByteBuffers inside the Java VM however via JNI invocation interface calls of env->NewDirectByteBuffer(). The native memory regions accessed via the ByteBuffers are allocated not by my own C++ code, but by the program that calls my DLL (the program is Metastock).
The interesting thing is that everything works fine if output to my debug console is enabled, which means that in the Java print routine getConsoleLoggingState() returns true and text is appended to the jTextArea.
static synchronized void print(String str)
{ MetaStockMonitor mMon=getInstance();
if ( mMon.getFileLoggingState() && mMon.logFileWriter!=null) {
mMon.logFileWriter.print(str);
mMon.logFileWriter.flush();
if ( mMon.getConsoleLoggingState() ) {
mMon.jTextArea1.append(str);
Only if output to the JTextArea is turned off (ie. getConsoleLoggingState()==false), the crash happens when the FIRST statement in the Java routine called via JNI invocation interface is a (useless) String concatenation operation, as described above.
String test=""+Math.random(); // String test not used later
Moreover, the crash happens BEFORE the allocated ByteBuffer objects are accessed in the Java code. But again, if console output is turned on, it works stable. If console output is turned off, it works when the (useless) String concatenation operation is removed in the Java routine called from C++.
I've already thought about potential races (regarding multiple threads), but this can be ruled out in my case. It almost appears as if the JVM can have problems when called by the invocation interface (I tested it with Java 1.4.2 b28).
All the calls between C++ and Java go ALWAYS in the direction from C++ code to Java. Unfortunately, there is no special JRE version with extensive logging capabilities to facilitate debugging. And the problem is not easily reproducible either.
JNIEnv* JNI_GetEnv()
JNIEnv *env;
cached_jvm->AttachCurrentThread((void**)&env,NULL);
fprintf(logfile,"env=%i\n",env);
fflush(logfile);
return env;
// function called by Metastock's MSX plug-in interface
BOOL __stdcall createIndEngine (const MSXDataRec *a_psDataRec,
const MSXDataInfoRecArgsArray *a_psDataInfoArgs,
const MSXNumericArgsArray *a_psNumericArgs,
const MSXStringArgsArray *a_psStringArgs,
const MSXCustomArgsArray *a_psCustomArgs,
MSXResultRec *a_psResultRec)
a_psResultRec->psResultArray->iFirstValid=0;
a_psResultRec->psResultArray->iLastValid=-1;
jthrowable ex;
jmethodID mid;
JNIEnv* env=JNI_GetEnv();
jobject chart=getChart(env, a_psDataRec);
if ( chart==NULL) {
return MSX_ERROR;
jobject getChart (JNIEnv* env, const MSXDataRec *a_psDataRec)
jthrowable ex;
jmethodID mid;
int closeFirstValid, closeLastValid;
closeFirstValid=a_psDataRec->sClose.iFirstValid;
closeLastValid=a_psDataRec->sClose.iLastValid;
long firstDate, firstTime;
if (closeFirstValid>=1 && closeFirstValid<=closeLastValid) {
firstDate = a_psDataRec->psDate[closeFirstValid].lDate;
firstTime = a_psDataRec->psDate[closeFirstValid].lTime;
} else {
firstDate=0;
firstTime=0;
jclass chartFactoryClass = env->FindClass("wschwendt/metastock/msx/ChartFactory");
if (ex= env->ExceptionOccurred() ) {
env->ExceptionDescribe();
env->ExceptionClear();
sprintf(sbuf, "DLL: Cannot find class ChartFactory\n");
printSBufViaJava(sbuf);
return NULL;
mid = env->GetStaticMethodID(chartFactoryClass, "getInstance", "()Lwschwendt/metastock/msx/ChartFactory;");
if (ex= env->ExceptionOccurred() ) {
env->ExceptionDescribe();
env->ExceptionClear();
sprintf(sbuf, "DLL: Cannot find method ID for ChartFactory.getInstance()\n");
printSBufViaJava(sbuf);
return NULL;
jobject chartFactory=env->CallStaticObjectMethod(chartFactoryClass, mid);
if (ex= env->ExceptionOccurred() ) {
env->ExceptionDescribe();
env->ExceptionClear();
sprintf(sbuf, "DLL: Exception while calling ChartFactory.getInstance()");
printSBufViaJava(sbuf);
return NULL;
mid = env->GetMethodID(chartFactoryClass, "getChartID", "(Ljava/nio/ByteBuffer;Ljava/nio/ByteBuffer;Ljava/nio/ByteBuffer;Ljava/nio/ByteBuffer;IIIIIII)F");
if (ex= env->ExceptionOccurred() ) {
env->ExceptionDescribe();
env->ExceptionClear();
sprintf(sbuf, "DLL: Cannot find method ID for ChartFactory.getChartID()\n");
printSBufViaJava(sbuf);
return NULL;
jobject symbolBuf=env->NewDirectByteBuffer(a_psDataRec->pszSymbol, strlen(a_psDataRec->pszSymbol) );
if (ex= env->ExceptionOccurred() ) {
env->ExceptionDescribe();
env->ExceptionClear();
sprintf(sbuf, "DLL: Cannot allocate symbolBuf\n");
printSBufViaJava(sbuf);
return NULL;
jobject securityNameBuf=env->NewDirectByteBuffer(a_psDataRec->pszSecurityName, strlen(a_psDataRec->pszSecurityName) );
if (ex= env->ExceptionOccurred() ) {
env->ExceptionDescribe();
env->ExceptionClear();
sprintf(sbuf, "DLL: Cannot allocate securityNameBuf\n");
printSBufViaJava(sbuf);
return NULL;
jobject securityPathBuf=env->NewDirectByteBuffer(a_psDataRec->pszSecurityPath, strlen(a_psDataRec->pszSecurityPath) );
if (ex= env->ExceptionOccurred() ) {
env->ExceptionDescribe();
env->ExceptionClear();
sprintf(sbuf, "DLL: Cannot allocate securityPathBuf\n");
printSBufViaJava(sbuf);
return NULL;
jobject securityOnlineSourceBuf=env->NewDirectByteBuffer(a_psDataRec->pszOnlineSource, strlen(a_psDataRec->pszOnlineSource) );
if (ex= env->ExceptionOccurred() ) {
env->ExceptionDescribe();
env->ExceptionClear();
sprintf(sbuf, "DLL: Cannot allocate onlineSourceBuf\n");
printSBufViaJava(sbuf);
return NULL;
// Java Function call leads to crash, if console output is turned off and
// the first statement in the Java routine is a (useless) string concatenation.
// Otherwise it works stable.
jfloat chartID=env->CallFloatMethod(chartFactory, mid, securityNameBuf, symbolBuf,
securityPathBuf, securityOnlineSourceBuf, (jint)(a_psDataRec->iPeriod),
(jint)(a_psDataRec->iInterval), (jint)(a_psDataRec->iStartTime),
(jint)(a_psDataRec->iEndTime), (jint)(a_psDataRec->iSymbolType),
(jint)firstDate, (jint)firstTime );
if (ex= env->ExceptionOccurred() ) {
env->ExceptionDescribe();
env->ExceptionClear();
sprintf(sbuf, "DLL: Exception while calling ChartFactory.getChartID()");
printSBufViaJava(sbuf);
return NULL;

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