replacing it with
package p1;
import java.sql.*;
public class jdbcDemo
{
public static void main(String args[])
{ int id = 0;
try
...
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import java.sql.*;
import java.io.*;
public class preparedstatementdemo
{
public static void main(String arg[]) throws Exception
{
...
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Hi Mike, Make sure that class you are going to load is in your classpath first. second, you should look at top of stack trace, there is a reanson why it throws such exception. JDK1.3 is using same method. but you may use Class.forName("your.class").newInstance(); I wish it would help??? [ March 22, 2002: Message edited by: Sunny Liu ] |
Hi there: I'm developing some application with an odbc link. I'm still testing it on a stand-alone PC and everything runs fine. Once I change the regular class, for an applet I'm getting some errors, so that the programs fails. Here are some lines of code: try { Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); } catch(java.lang.ClassNotFoundException e) { System.err.print("ClassNotFoundException: " + e.getMessage()); System.exit(1); } the line ... |
i am trying to do an update on a table, with the help of a cachedrowset ( from sun rowset1.0). i am able to perform the updates to the resultset and when i finally call the acceptchanges() method, i am getting an error. it says "SQLException: writeData cannot determine the table name" When i tried to debug this, by invoking the ... |
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The JDBC drivers for most databases (Oracle, DB2, SQLServer, etc) are notoriously horrible at giving error messages. You're usually much better off (if you can) to look in the server logs. If you're using type 2 drivers (like the oracle OCI or DB2Connect), you can also turn up the client side logging and get more info. If you can't get to ... |
Assuming that "STOREID" is an integer value, you need to make sure you call ".setInt(1, xxx);" on the prepared statement, where "xxx" is the int value you are searching on. This has to be done before you call "executeQuery()" on the prepared statement. When you set up a prepared statement, the question marks (?) represent parameters that you will specify at ... |
I have tried this code in both JDeveloper 10g and Netbeans 3.5. I cannot get the DriverManager to recognize the oracle driver. I can connect to the database, but the driver isn't recognized. Here's my code: import java.sql.*; public class RequestSQL { public static void main (String args[]) { //declare connection and stament objects Connection myConnection = null; Statement myStatement = ... |
dear pmani, first of all the way you are creating pstmt1 is not perfect. the number of records in outer resulult set will cause the same number of times pstmt1 to be created instead of this you can create pstmt1 once and reuse it by calling method clearParameters() over statement. can you paste the exception/error you are getting |
Hi ranchers, I get the error "maximum open cursors exceeded", after my program runs for some time. I understand that this is occuring because either the open cursors in the db is too less or I am supposed to be closing my prepared statement obects after each use. Let me explain my requirement: This code executes the same sql query thousands ... |
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import java.sql.*; public class Main { public static void main(String[] args) { String dbURL = "jdbc:oracle:thin:@localhost:1521:mydatabase"; String username = "scott"; String user_password = "tiger"; try { Connection connection = DriverManager.getConnection(dbURL, username, user_password); String query_text = "SELECT * FROM mytable"; Statement statement = connection.createStatement(); ResultSet query_result = statement.executeQuery(query_text); connection.close(); } catch (SQLException e) { for (Throwable t: e) t.printStackTrace(); } } } ... |
import java.sql.*; public class Assignment{ public static void main ( String args[]){ try{ Class.forName("jdbc.odbc.JdbcOdbcDriver"); String url = "jdbc:odbc:bankDSN"; Connection con= null; con= DriverManager.getConnection(url,"",""); String sql = "SELECT * FROM Account"; PreparedStatement pStmt= con.prepateStatement(sql,ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_UPDATABLE); ResultSet rs = pStmt.executeQuery(); ResultSetMetaData rsmd = rs.getMetaData( ); int numColumns = rsmd.getColumnCount(); String cName; for(int i =1; i |
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Given the following code... String insertStatement = "DELETE FROM UserSession WHERE UserFK = ?; " + "DELETE FROM UserSession WHERE SessionID = ?; " + "INSERT INTO UserSession (SessionID, UserFK) " + "VALUES ( ? , ? );"; PreparedStatement prepStmt = null; try { // Prepare Statement prepStmt = connection.prepareStatement(insertStatement); prepStmt.setInt(1, userPk); prepStmt.setString(2, sessionId); prepStmt.setString(3, sessionId); prepStmt.setInt(4, userPk); // Execute statement ... |
Hi All, We are facing a very weird issue, we are trying to execute a query using preparedStatement.executeQuery() method. This query when run on TOAD takes about 5 minutes to return initial results and the query returns a total of 30,000 rows in whole. But when we run the same query from Java , executeQuery() method nothing is happening, we waited ... |
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Hi, I'm getting the following error while using Prepared statement. Could some one tell me where i'm going wrong. error: type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception org.apache.jasper.JasperException: Exception in JSP: /DBTest.jsp:31 28: res = "Fail"; 29: else 30: res = "Pass"; 31: ps.setInt(1,no); 32: ps.setString(2,name); 33: ps.setInt(3,total); ... |
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Thanks. that is the easy part because we talk about the constant 9000000000.0 here. What if my statement is pstmt.setDouble(2, bean.getAaCash()); where bean.getAaCash() return a long or double. I was able to compile but in run time the following exception occur: interbase.interclient.ParameterConversionException: [interclient] Invalid data conversion: Parameter instance 9.0E9 is out of range for requested conversion. How can I force the ... |