Result Set Update error for Timestamp

Question

Hi,
I am using Oracle 9i DB with JBDC 2.0. I want to update a record present in a Resultset. Two fields are updated from this resultset. One is string and other is timestamp. Both these fields are present in select clause of the statement. The string field is updated (String.updateString(<field name>, value)) properly in to DB (Resultset.updateRow()). But if i include timestamp field for update (Resultset.updateTimestamp(<field name>, value)), it gives me error on this line.
Error message is as given below
java.sql.SQLException: Internal Error: Unable to construct a Datum from the specified input
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179)
at oracle.jdbc.dbaccess.DBError.check_error(DBError.java:1130)
at oracle.sql.SQLUtil.makeDatum(SQLUtil.java:1100)
at oracle.sql.SQLUtil.makeOracleDatum(SQLUtil.java:1583)
at oracle.jdbc.driver.UpdatableResultSet.updateObject(UpdatableResultSet.java:1615)
at oracle.jdbc.driver.UpdatableResultSet.updateTimestamp(UpdatableResultSet.java:1492)
at oracle.jdbc.driver.OracleResultSet.updateTimestamp(OracleResultSet.java:2881)
If the timestamp update line is commeted then code work fine. Resultset.updateDate() is also working, but not Resultset.updateTimestamp();
Regards,
Jayesh

Answer 1

Kshitiz & Jayesh,
Well, it works for me.
I ran Jayesh's "TestTimestamp" class (slightly modified) on a Windows XP machine with JDK 1.4.2_07 using "ojdbc14.jar" as the JDBC driver.
I created (and populated) the EMP table, as per Jayesh's instructions, on a Oracle 9.2.0.4 database running on SUN [sparc] Solaris 9.
Here is my code:
import java.sql.*;
public class TestTimestamp {
  public static void main(String[] args) {
    Connection conn = null;
    PreparedStatement ps = null;
    ResultSet rs = null;
    try {
      Class.forName("oracle.jdbc.driver.OracleDriver");
      conn = DriverManager.getConnection("jdbc:oracle:thin:@host:1521:orcl",
                                         "scott",
                                         "tiger");
      // connection.setAutoCommit(false);
      ps = conn.prepareStatement("select EMPID,NAME,JOINDATE,JOINTS from EMP",
                                 ResultSet.TYPE_SCROLL_INSENSITIVE,
                                 ResultSet.CONCUR_UPDATABLE);
      rs = ps.executeQuery();
      System.out.println("EMDID NAME JOIN DATE JOIN TS");
      while (rs.next()) {
        System.out.print(rs.getInt("EMPID"));
        System.out.print(" " + rs.getString("NAME"));
        System.out.print(" " + rs.getDate("JOINDATE"));
        System.out.println(" " + rs.getTimestamp("JOINTS"));
        rs.updateTimestamp("JOINTS",
                           new Timestamp(System.currentTimeMillis())); //THIS WILL CREATE PROBLEM
      rs.last();
    catch (Exception e) {
      e.printStackTrace(System.err);
    finally {
      if (rs != null) {
        try {
          rs.close();
        catch (SQLException sqlEx) {
          System.err.println("Failed to close 'Resultset'");
          sqlEx.printStackTrace(System.err);
      if (ps != null) {
        try {
          ps.close();
        catch (SQLException sqlEx) {
          System.err.println("Failed to close 'PreparedStatement'");
          sqlEx.printStackTrace(System.err);
      if (conn != null) {
        try {
          conn.close();
        catch (SQLException sqlEx) {
          System.err.println("Failed to close 'Connection'");
          sqlEx.printStackTrace(System.err);
}And here is my output:
EMDID NAME JOIN DATE JOIN TS
6001 Jayesh 2021-12-03 2021-12-03 09:00:00.0
6002 Krupa 2021-12-03 2021-12-03 09:00:00.0
6003 Vinod 2021-12-03 2021-12-03 09:00:00.0
6004 Dylan 2021-12-03 2021-12-03 09:00:00.0Good Luck,
Avi.