JDBC Oracle connection in java

Posted on 2007-03-19
Last Modified: 2010-05-18
I have connection to Oracle database in ASP. Now, I have problem converting to the connection to use JDBC in java. Please help shed some light.

Oracle Connection in ASP
strConn ="DRIVER={Oracle in OraHome90};DSN=<DSN>;DBQ=<DBQ>;UID=<user name>;PWD=<password>;"
Set conntemp = Server.CreateObject("ADODB.Connection")
if conntemp.state=0 then
      conntemp.Open strConn

My attempt in JDBC
String driver = "oracle.jdbc.driver.OracleDriver";

DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
Connection con = DriverManager.getConnection("jdbc:oracle:thin:@(description=(address=(host=<host name>)(protocol=tcp)(port=<port>))(connect_data=(sid=<sid>)))",<user name>,<password>);

When i run the connection in java, i get IOException : The network adapter could not establish the connection.

Is it because i specify the host name wrongly?

Question by:rospcc
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Accepted Solution

mnrz earned 125 total points
ID: 18746655
@(description=(address=(host=<host name>)(protocol=tcp)(port=<port>))(connect_data=(sid=<sid>)))

host name, port and sid should be specified

LVL 92

Assisted Solution

objects earned 125 total points
ID: 18746744
LVL 48

Assisted Solution

schwertner earned 125 total points
ID: 18747273
I use this with Jdeveloper,
but before this i  place i CLASSPATH the needed
Oracle classes - this is very important

* Reading from scot/tiger table

import java.sql.*;

import oracle.jdbc.pool.OracleDataSource;

class first {
public static void main (String args []) throws SQLException {
// Create DataSource and connect to the local database
OracleDataSource ods = new OracleDataSource();
Connection conn = ods.getConnection();
// Query the employee names
Statement stmt = conn.createStatement ();
ResultSet rset = stmt.executeQuery ("SELECT ename FROM emp ORDER BY ename");
// Print the name out
while ( ())
System.out.println (rset.getString (1));
//close the result set, statement, and the connection
LVL 30

Assisted Solution

by:Mayank S
Mayank S earned 125 total points
ID: 18750329
Sounds like the machine name or port number you entered in your connection string was incorrect. Are you able to connect through SQL * Plus? Your connection string could also be simplified based on what schwertner mentioned.

>> Class.forName(driver);
>> DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());

The call to registerDriver () is redundant.
LVL 48

Expert Comment

ID: 18754579
Also you need in CLASSPATH variable the Oracle classes for connection to the database.

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