Need help with Thin JDBC connecting Oracle to SQL server.

Question

I am fairly new to JAVA. We have ORACLE 8.1.7 running on Solaris 8. I have a need to
periodically extract data from ORACLE DB and transfer it to SQL Server. I am limited to
moving data from the ORACLE/UNIX environment to SQL Server side.
From what I have read, Server-side Thin driver should work.
1) Are there any issues in trying to achieve this with ORACLE running on the UNIX platform?
2) Will the Server-side Thin driver talk to both the DBs ?
3) Is it possible to provide some sample code ?
Thanks in advance,
Solomon

Answer 1

Quattro,
I had complete success in reading from Oracle and writing to SQL Server. First of all let me thank you for all your help. I do have one last request. Its more on optimization than any thing else.
I was trying to optimize my code by grouping both the connections in one place and to keep my reads and inserts together so that I don't commit at the end of each insert etc. I don't seem to have the scope rules under control yet. Could you suggest how to improve this:
import java.sql.*;
public class Test_Combined2 {
public static void main(String args[]) throws SQLException {
// Load the Oracle JDBC driver
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
// Connect to the database
// You must put a database name after the @ sign in the connection URL.
// You can use either the fully specified SQL*net syntax or a short cut
// syntax as <host>:<port>:<sid>. The example uses the short cut syntax.
Connection con2 = DriverManager.getConnection ("jdbc:oracle:thin:@Test:1521:PSDEVElOP",
"SOLOMON","SOL1");
// Create a Statement
Statement stmt2 = con2.createStatement ();
String url = "jdbc:microsoft:sqlserver://INTRADEV:1433;DatabaseName=Measure";
Connection con;
String query = "select dataYear, dataMonth, yieldRate from tblYield " ;
Statement stmt;
try {
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
} catch(java.lang.ClassNotFoundException e) {
System.err.print("ClassNotFoundException: ");
System.err.print(e.getMessage());
// Select the ENAME column from the EMP table
ResultSet rset = stmt2.executeQuery ("select year_start, monthofyear, percent_comp " +
" from ps_usm_ytd_yield ");
// Iterate through the result and print the employee names
while (rset.next ()) {
System.out.println (rset.getFloat (3));
int ps_dataYear = rset.getInt(1);
int ps_dataMonth = rset.getInt(2);
float ps_yieldRate = rset.getFloat(3);
try{
con = DriverManager.getConnection (url, "tmpuser","tmppush");
stmt = con.createStatement();
PreparedStatement insertTblYield;
String insertString = "insert into tblYield " +
" values(?, ?, ?)";
//con.setAutoCommit(false);
insertTblYield = con.prepareStatement(insertString);
insertTblYield.setInt(1, ps_dataYear);
insertTblYield.setInt(2, ps_dataMonth);
insertTblYield.setFloat(3, ps_yieldRate);
insertTblYield.executeUpdate();
con.commit();
//con.setAutoCommit(false);
/*ResultSet rs = stmt.executeQuery(query);
System.out.println("dataYear, dataMonth, yieldRate");
while (rs.next()) {
int dataYear = rs.getInt(1);
int dataMonth = rs.getInt(2);
float yieldRate = rs.getFloat(3);
System.out.println(" " + dataYear + ", " + dataMonth + ", " + yieldRate);
stmt.close();
con.close();
} catch(SQLException ex) {
System.err.print("SQLException: ");
System.err.println(ex.getMessage());
} //while
stmt2.close();
con2.close();