SQLException: Cursor is closed while calling a java stored procedure

Question

Hi,
I got the following error when trying to read from a cursor of a java stored procedure:
java.sql.SQLException: Cursor is closed
The java procedure is stored in the database and wrapped by a sql call. Then another java class executes the sql call.
The stored procedure looks like this:
import java.io.Reader; import java.security.MessageDigest; import java.sql.*; import java.text.DateFormat; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.List; import oracle.jdbc.OracleCallableStatement; import oracle.jdbc.OracleConnection; public class test { static Connection conn = null; static String username = null; static String password = null; static Integer userid  = null; public static void main(String args[]) throws Exception {     username = "keller";     password = "945435";     login(username, password); }       public static String login(String in_username, String in_password) {     String access = null;     String password = null;         try {             DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());  // Non OracleVM             System.out.print("Verbindung wird initialisiert... ");             conn =         //DriverManager.getConnection("jdbc:default:connection:");           //conn.setAutoCommit(false);             DriverManager.getConnection("jdbc:oracle:thin:@[...]:1521:[...]","[...]","[...]");             System.out.println("OK");                         System.out.print("Logindaten werden ueberprueft... ");             String sql = "SELECT matrikelnr, password FROM student WHERE name = ?";             PreparedStatement pstmt = conn.prepareStatement(sql);             pstmt.setString(1, in_username);             ResultSet rset = pstmt.executeQuery();             while (rset.next())             {             userid = rset.getInt(1);                 password = rset.getString(2);             }             access = "student";                         pstmt = conn.prepareStatement(sql);             if (password == null) {             sql = "SELECT dozentnr, password FROM dozent WHERE name = ?";                 pstmt = conn.prepareStatement(sql);                 pstmt.setString(1, in_username);                 rset = pstmt.executeQuery();                 while (rset.next())                 {             userid = rset.getInt(1);                     password = rset.getString(2);                                     }                 pstmt = conn.prepareStatement(sql);                 if (password == null) {                   throw new SQLException("User nicht gefunden!");                 }                 access = "dozent";             }             //rset.close(); // Resultset schließen             //pstmt.close(); // Statement schließen                         // MD5 Hash vergleichen             MessageDigest md5 = MessageDigest.getInstance("MD5");             md5.reset();             md5.update(in_password.getBytes());             byte[] result = md5.digest();             StringBuffer hexString = new StringBuffer();             for (int i=0; i<result.length; i++) {               if(result[i] <= 15 && result[i] >= 0){                 hexString.append("0");               }               hexString.append(Integer.toHexString(0xFF & result));
if (password != null) {
if (password.equals(hexString.toString())) {
System.out.println("OK");
} else {
throw new Exception("Falsches Passwort!");
catch(SQLException e) {
System.err.println("SQL Fehler!");
System.err.println(e.getMessage());
catch(Exception e) {
System.err.println("Fehler!");
System.err.println(e.getMessage());
return access;
public static void getLeistungsschein(int matrikelnr, ResultSet[] rout)
ResultSet rs = null;
try
System.out.print("Berechtigung ueberpruefen... ");
if (userid != matrikelnr)
throw new Exception("Zugriff verweigert, keine Berechtigung!");
int mnr = matrikelnr;
((OracleConnection)conn).setCreateStatementAsRefCursor(true);
PreparedStatement ps = conn.prepareStatement("select bezeichnung, note from klausur inner join leistungsschein on klausur.KLAUSURNR=leistungsschein.KLAUSURNR where matrikelnr= ?");
ps.setInt(1, mnr);
rs = (ResultSet)ps.executeQuery();
rout[0]= rs;
catch(SQLException e) {
System.err.println("Fehler!");
System.err.println(e.getMessage());
catch(Exception e) {
System.err.println("Fehler!");
System.err.println(e.getMessage());
The sql call:
create or replace
procedure pgetleistungsschein(matrikelnr in number, cur OUT refcurpkg.refcur_t) is
language java name 'Klausurverwaltung.getLeistungsschein(int, java.sql.ResultSet[])';
And finally the wrapper is called by another java programm, see this:
import java.sql.*;
import java.util.ArrayList;
import java.util.List;
import oracle.jdbc.OracleCallableStatement;
import oracle.jdbc.OracleResultSet;
import oracle.jdbc.OracleTypes;
public class cursortest {
public static void main(String[] args) {
try{
//-- Oracle Treiber laden
Class.forName( "oracle.jdbc.driver.OracleDriver" );
Connection c = DriverManager.getConnection( "jdbc:oracle:thin:@sligo.fh-trier.de:1521:ubuntu", "dbsem_java","javajava");
CallableStatement stmt = null;
ResultSet rs1 = null;
int matrnr = 945098;
// Call PLSQL Stored Procedure
stmt = (CallableStatement)c.prepareCall("{ call ? := getklausuren(?) }");
stmt.setInt(2, matrnr);
// 2nd parameter is OUT paremeter
stmt.registerOutParameter(1, OracleTypes.CURSOR);
// Execute the callable statement
stmt.execute();
//Cursor in ResultSet einlesen
rs1 = ((OracleCallableStatement)stmt).getCursor(1);
ResultSetMetaData rsmd = rs1.getMetaData();
int anzSpalten = rsmd.getColumnCount();
List<String[]> zeilen = new ArrayList<String[]>();
while(rs1.next())
String[] zeile = new String[anzSpalten];
for (int i=1; i<=anzSpalten; i++)
zeile[i-1]=rs1.getString(i);
zeilen.add(zeile);
String[][] array_angeb_klaus = (String[][])zeilen.toArray(new String[zeilen.size()][anzSpalten]);
//**** ENDE
rs1.close();
stmt.close();
//c.close();
catch (SQLException e){
System.out.println(e);
catch (ClassNotFoundException f){
System.out.println(f);

Answer 1

On top of what jschell says, this just looks wrong in terms of how Oracle's internal Java works as well.
[Have a look here |http://www.oracle.com/technology/sample_code/tech/java/codesnippet/jdbc/refcur/index.html] (unless things have changed significantly over the past few years for Oracle Java).
Is the db you are querying a different one to the one this Java is stored in?