CODEWITHSUNDEEP
javajdbcoracle11g
sweet dreams
sweet dreams

Reputation: 2134

Understanding mysterious Oracle JDBC errors - ORA-00911: invalid character

I am making Java 1.6-JDBC-Oracle 11 code. I created a table called employee with id,name and age. I am getting the error - ORA-00911: invalid character. How can I fix this ?

Here is my code-

import java.sql.*;
import java.util.Properties;
import java.io.IOException;
import java.io.FileInputStream;

public class HelloOracle {

    static String query =
        "SELECT emp_id, emp_name, emp_age " +
        "FROM employee;";

    public static void main(String[] args) {
        String username = "";
        String password = "";
        Properties prop = new Properties();
        try {
            FileInputStream fis = new FileInputStream("Login.properties");
            prop.load(fis);
        } catch (IOException ex) {
            ex.printStackTrace();
        }

        username = prop.getProperty("username").trim();
        password = prop.getProperty("password").trim();

        try {
            Connection con = DriverManager.getConnection("jdbc:oracle:thin:@//localhost:1521/xe", username, password);

            Statement stmt = con.createStatement();

            ResultSet rs = stmt.executeQuery(query);

            while (rs.next()) {
                System.out.print(rs.getString("emp_id"));
                System.out.print("  ,  ");
                System.out.print(rs.getString("emp_name"));
                System.out.print("  ,  ");
                System.out.print(rs.getString("emp_age"));
                System.out.println();
            }
        } catch (SQLException e) {
            System.out.println("Exception: " + e);
        }

    }

}

Unfortunately, oracle error messages are not as informative as mysql or mssql and I am not able to trouble shoot them easily. I am also not able to see which line of code caused the exception.

Upvotes: 24

Views: 26027

Answers (3)

Mehdi
Mehdi

Reputation: 1477

remove the ; from inside the query

Upvotes: 1

duffymo
duffymo

Reputation: 308733

Bohemian is exactly right. I don't see why this was so hard. If you pop the message into Google, you'll get this:

http://www.dba-oracle.com/sf_ora_00911_invalid_character.htm

The semi-colon is the first problem noted.

Another recommendation: Don't do this.

catch(SQLException e){System.out.println("Exception: " + e);}

Do this instead:

catch(SQLException e){
    e.printStackTrace(); // better yet, log it.
}

It'll give you lots more information.

Upvotes: 0

Bohemian
Bohemian

Reputation: 424973

Try removing the semi colon from the end of your SQL statement.

ie 

static String query = "SELECT emp_id, emp_name, emp_age " +
    "FROM employee"; // no trailing ";" in the SQL

Upvotes: 52

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