Problem in metadata.getColumns...pl help me

Question

Hello
This is my program
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection conn = DriverManager.getConnection(url+dataSource,Uname,Pwd);
out = new FileOutputStream("myfile.sql");
p = new PrintStream(out);
DatabaseMetaData metadata = conn.getMetaData();
ResultSet rsTables = metadata.getTables("",Uname,"%",tabtypes);
p.println("/* File Created on");
while(rsTables.next())
String tmp = rsTables.getString("TABLE_NAME");
// String coltype = rs1.getType(2);
p.println("Create Table "+ tmp + "(");
//when i use this
ResultSet rsColumns = metadata.getColumns("",Uname,tmp,"");
it says the foll. error
ava.sql.SQLException: [Oracle][ODBC]Driver not capable.
     at sun.jdbc.odbc.JdbcOdbc.createSQLException(JdbcOdbc.java:6031)
     at sun.jdbc.odbc.JdbcOdbc.standardError(JdbcOdbc.java:6188)
     at sun.jdbc.odbc.JdbcOdbc.SQLColumns(JdbcOdbc.java:2174)
     at sun.jdbc.odbc.JdbcOdbcDatabaseMetaData.getColumns(JdbcOdbcDatabaseMetaData.java:2576)
     at mypackage.Dbcopy.doCopy(Dbcopy.java:72)
     at mypackage.myclass.main(myclass.java:20)
but the foll. line works fine...
ResultSet rsTables = metadata.getTables("",Uname,"%",tabtypes);
Let me know if that one is driver specific....any other way i can use it.
I m trying to query the tables in a oracle database and output a .sql file which has
create table <tablename>(colname, datatype)
and when i run this .sql file it should create thos tables.
Thanks
SS

Answer 1

Hello,
This is my program.
I am able to get the tables and their columnnames , now my problem is i need to get the actual datatypes and their length.
As of now i need to get the datatype from oracle and its length. one more problem is i m checking for the last column if its the last column in table i need to close with this brace ")" else i need to put a comma and continue. when i m using the isafterlast method its not working. how to check that.
It should be of great help to me if you could let me know....as i need to give it to my manager on monday morning.
Thanks & Regards
Srinivas
public class Dbcopy2 {
public static String Uname;
public static String Pwd;
public static String url = "";
public static String cat;
public static FileOutputStream out;
public static PrintStream p;
public static String dattype;
public static String tabtypes[]={"TABLE"};
public Dbcopy2(String url,String Uname, String Pwd) {
this.url = url;
this.Uname = Uname;
this.Pwd = Pwd;
public void doCopy(String datasource)
try {
DriverManager.registerDriver (new oracle.jdbc.driver.OracleDriver());
Connection conn = DriverManager.getConnection(url, Uname, Pwd);
out = new FileOutputStream("myfile.sql");
p = new PrintStream(out);
GregorianCalendar dt = new GregorianCalendar();
     p.println("--Rem File Created on " + dt.getTime().toString());
DatabaseMetaData metadata = conn.getMetaData();
ResultSet rsTables = metadata.getTables(null,null,"%",tabtypes);
ResultSetMetaData md = rsTables.getMetaData();
          int cols=md.getColumnCount();
while(rsTables.next())
          if (rsTables.getString(2).equalsIgnoreCase(Uname))
               String schemaname = rsTables.getString(2);
               String tbname = rsTables.getString(3);
               p.println("Create table " + tbname + "(");
     ResultSet rsColumns = metadata.getColumns(null,schemaname,tbname,null);
               ResultSetMetaData md2 = rsColumns.getMetaData();
String colname=null;
String coltype=null;
String colsize=null;
String colltype=null;
     while(rsColumns.next())
          colname = rsColumns.getString(4);
          coltype = rsColumns.getString(5);
          colsize = rsColumns.getString(7);
          p.print(colname + " ");
     /* if (coltype = (java.sql.Types.CHAR)) // i m getting some error here and is this the right way to do it//
     colltype = "CHAR" ;
if(rsColumns.isAfterLast())
                                             p.print(coltype+" ("+colsize+")");
     else
     p.print(coltype+" ("+colsize+"),");
     }p.println(");");
p.println();
} catch(Exception e)
e.printStackTrace() ;
public static void main(String[] args) {
Dbcopy2 db = new Dbcopy2("jdbc:oracle:thin:@192.168.0.21:1521:orcl","scott","tiger");
//Dbcopy2 db = new Dbcopy2("jdbc:oracle:thin:","scott","tiger");
db.doCopy("isol");