无法使用JDBC连接到Oracle 11g - 指定了无效的oracle URL

Question

I'm struggling with establishing connection to my database using JDBC. I've done already all necessary things mentioned in documentation.

1. I've got database working on my laptop - Oracle XE 11g rel. 2 with SID="xe", checked with SQL Developer
2. I have proper driver - ojdbc6.jar - and added it to my project in Eclipse's Java Build Path properties

3. I wrote few basic lines with try/catch block to establish connection:

     Connection myConn = DriverManager.getConnection("jdbc:oracle:thin@localhost:1521:xe", "system", "somepass"); Statement myStat = myConn.createStatement(); ResultSet myRe = myStat.executeQuery("SELECT * from PATIENTS"); while(myRe.next()){ System.out.println(myRe.getString("LAST_NAME")); } myConn.close(); myRe.close(); 

But after running my code i receive error "Invalid Oracle URL specified". Everything looks fine but I am just starting with JDBC.. Did I miss something?

Answer 1

You are missing a colon - use

jdbc:oracle:thin:@localhost:1521:xe
                ^

instead of

jdbc:oracle:thin@localhost:1521:xe
               ^^^

as the connection string.

See also https://docs.oracle.com/cd/E11882_01/appdev.112/e13995/oracle/jdbc/OracleDriver.html

... Where the URL is of the form:

 jdbc:oracle:<drivertype>:@<database>