Oracle connection in java (error is invalid column name)

Question

    public static void baglanti(){

    OracleDataSource ods;
    //String driverName = "oracle.jdbc.driver.OracleDriver";

    try {
        ods = new OracleDataSource();
        ods.setURL("jdbc:oracle:thin:@//aaaaaa:2122/XXXXX");
        ods.setUser("aaaa");
        ods.setPassword("aaaa");

        Connection conn=ods.getConnection();
        Statement st=conn.createStatement();
        ResultSet rs=st.executeQuery("SELECT DESCRIPTION FROM example");

        while (rs.next()) {
            //rs.getString("ID");
            System.out.println("DESC : "+rs.getString("1"));

        }   

    } catch (SQLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }



}

I have an error my connection java from to oracle.user name ,password are correct but I couldn't connect to db. Thanks.

Your query is to select the column DESCRIPTION but you try to get the columns ID(commented) and 1 from the ResultSet which is why you're getting the error I suppose. — Rahul
– Rahul, Commented Jun 16, 2014 at 7:05
Read Error StackTrace which will have column name which is invalid. — Akash Thakare
– Akash Thakare, Commented Jun 16, 2014 at 7:07

Akash Thakare · Accepted Answer · 2014-06-16 07:16:46Z

2

The way you use getString is wrong. You can pass an index or the column label:

System.out.println("DESC : "+rs.getString(1));

or

System.out.println("DESC : "+rs.getString("description"));

you pass the index as a String and that's wrong.

edited Jun 16, 2014 at 7:16

Akash Thakare

23k11 gold badges64 silver badges89 bronze badges

answered Jun 16, 2014 at 7:12

nano_nano

12.6k8 gold badges58 silver badges85 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

ngrashia · Accepted Answer · 2014-06-16 09:39:15Z

0

Since you say you have a connection error, try below code for connection part:

OracleDataSource ds = new OracleDataSource();
ds.setDriverType("thin");
ds.setServerName("dssw2k01");
ds.setPortNumber(1521);
ds.setDatabaseName("orcl"); // sid
ds.setUser("scott");
ds.setPassword("tiger");

If the connection is correct and the query is executed, even then you will have issues parsing the resultset unless you correct the below one as:

System.out.println("DESC : "+rs.getString(1));

OR System.out.println("DESC : "+rs.getString("DESCRIPTION"));

rs.getString(), rs.getInt() etc all have either

The index as an integer parameter starting from 1

or

The alias name of the resultset output as a String

answered Jun 16, 2014 at 9:39

ngrashia

9,8945 gold badges45 silver badges58 bronze badges

Collectives™ on Stack Overflow

Oracle connection in java (error is invalid column name)

2 Answers 2

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related