“Invalid connection string format” error when trying to connect to Oracle using TNS alias that contains dot character

问题

I am trying to connect to Oracle database using TNS.

The problem is that TNS alias contains dot, so when I am specifying url like this:

jdbc:oracle:thin:@TNS.ALIAS

I've got...

oracle.net.ns.NetException: Invalid connection string format, a valid format is: "host:port:sid"

...during creation of connection.

I know that dot character is a problem, because after removing it from tnsnames.ora file connection to database works.

My question is - is it possible to escape dot character somehow? Maybe there is some connection parameter that can be setup to allow dot character in alias? I would like to avoid removing dot from tnsnames.ora since i am getting the file from outside source.

Here are the options that I've already tried that gave me the same error:

jdbc:oracle:thin:@"TNS.ALIAS"
jdbc:oracle:thin:@\"TNS.ALIAS\"
jdbc:oracle:thin:@`TNS.ALIAS`
jdbc:oracle:thin:@TNS\.ALIAS - this one is not compiling
jdbc:oracle:thin:@TNS\\.ALIAS
jdbc:oracle:thin:@TNS&#46;ALIAS
jdbc:oracle:thin:@TNS\".\"ALIAS
jdbc:oracle:thin:@TNS%2eALIAS

Here are the options that resulted with oracle.net.ns.NetException: could not resolve the connect identifier:

jdbc:oracle:thin:@TNSALIAS
jdbc:oracle:thin:@TNS-ALIAS
jdbc:oracle:thin:@TNS_ALIAS

Additional context:

I am trying to create Java's DataSource (OracleDataSource to be strict) in Scala (it is Play Framework - but I am not using Play's way of creation of DB connections - I am doing it manually)
I have SQL Developer that is using exactly the same tnsnames.ora file and it is working there
We are having C# applications that are using exactly the same tnsnames.ora file and it is working there (data source is defined like this: <add name="connectionName" connectionString="Data Source=TNS.ALIAS;"/>

回答1:

You need set

System.setProperty("oracle.net.tns_admin","C:\\app\\product\\12.2.0\\client_1\\network\\admin");

set to the location of the tnsnames.ora

import java.sql.Connection;
import java.sql.DriverManager;

public class DBConnect {
    public Connection connection;

    public DBConnect() {
    }

    public void connect() throws Exception {
        String connectString;
        System.setProperty("oracle.net.tns_admin", "C:\\app\\product\\12.2.0\\client_1\\network\\admin");
        Class.forName("oracle.jdbc.driver.OracleDriver");
        connectString = "jdbc:oracle:thin:@esmdj.test";
        System.out.println("Before DriverManager.getConnection");
        try {
            connection = DriverManager.getConnection(connectString, "scott", "tiger");
            System.out.println("Connection established");

            connection.setAutoCommit(false);
        } catch (Exception e) {
            System.out.println("Exception inside connect(): " + e);
            e.printStackTrace();
        }

    }

    public static void main(String[] args) {
        DBConnect client = new DBConnect();

        System.out.println("beginning");
        try {
            client.connect();
            System.out.println("after Connected");

            client.connection.close();

            System.out.println("after close");

        } catch (Exception e) {
            try {
                System.out.println("Exception : " + e);
                client.connection.close();
                e.printStackTrace();
            } catch (Exception ex) {
                System.out.println("Close Connection Exception : " + ex);
                ex.printStackTrace();
            }
        }

    }

}


C:\Program Files\Java\jdk1.8.0_73\bin>java -classpath  .  DBConnect
beginning
Before DriverManager.getConnection
Connection established
after Connected
after close

tnsnames.ora

esmdj.test =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = xxx.xxx.yyy.zzz)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = ESMD)
    )
  )

回答2:

I've found the problem - I was using older Oracle driver (ojdbc7.jar for version 12.1.0.1) after change to newer one (ojdbc8.jar for version 12.2.0.1) lookup by TNS alias started to work - there was no need to escape anything

来源：https://stackoverflow.com/questions/57341480/invalid-connection-string-format-error-when-trying-to-connect-to-oracle-using

标签

java

Oracle

scala

jdbc

tnsnames