I downloaded DeveloperDaysVM2016-06-02_13.ova from http://www.oracle.com/technetwork/database/enterprise-edition/databaseappdev-vm-161299.html and successfully loaded it into Virtual Box.

I logged in as "oracle" user and I can see the desktop.

From within the virtual machine, I opened Firefox and navigated to:

http://localhost:8080/ords/hrrest/employees/ and successfully received a list of employees in JSON format. So I know the database is up and running.

Now I am trying to connect to this database via the "ojdbc6.jar" Java connector/driver from Netbeans (see image below). However,

when I enter in

username:hr password:oracle SID:orcl12c URL: jdbc:oracle:thin:@localhost:1521:orcl12c

I get an error message indicating

"Unable to add connection. Cannot establish a connection to jdbc:oracle:thin:@localhost:1521:orcl12c using oracle.jdbc.OracleDriver (ORA-01017: invalid username/password; logon denied"

But this doesn't make any sense because I was able to successfully login from the terminal:

sqlplus hr

SQL*Plus: Release Production on Thu Jul 7 17:21:07 2016

Copyright (c) 1982, 2014, Oracle.  All rights reserved.

Enter password: oracle
Last Successful login time: Thu Jul 07 2016 16:33:31 -04:00

Connected to:
Oracle Database 12c Enterprise Edition Release - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options


Why can't I login via the java connector from netbeans?

I also checked

lsnrctl status

LSNRCTL for Linux: Version - Production on 07-JUL-2016 17:22:12

Copyright (c) 1991, 2014, Oracle.  All rights reserved.

Alias                     LISTENER
Version                   TNSLSNR for Linux: Version - Production
Start Date                05-JUL-2016 16:48:08
Uptime                    2 days 0 hr. 34 min. 4 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Default Service           orcl12c
Listener Parameter File   /u01/app/oracle/product/
Listener Log File         /u01/app/oracle/diag/tnslsnr/vbgeneric/listener/alert/log.xml
Listening Endpoints Summary...
Services Summary...
Service "orcl" has 1 instance(s).
  Instance "orcl12c", status READY, has 1 handler(s) for this service...
Service "orcl12c" has 2 instance(s).
  Instance "orcl12c", status UNKNOWN, has 1 handler(s) for this service...
  Instance "orcl12c", status READY, has 1 handler(s) for this service...
Service "orcl12cXDB" has 1 instance(s).
  Instance "orcl12c", status READY, has 1 handler(s) for this service...
Service "ords" has 1 instance(s).
  Instance "orcl12c", status READY, has 1 handler(s) for this service...
The command completed successfully
[oracle@vbgeneric oracle]$ 

So what am I doing wrong? Everything seems to be up and running correctly in this pre-built virtual machine.

enter image description here

3 Answers 3


This is the same story over and over again. Oracle uses the multitenant architecture in this VM and they set the environment variable TWO_TASK. This causes a lot of confusion.

When you connect as sqlplus hr, the value of TWO_TASK is automatically appended to the connection string, and you are connecting to SERVICE_NAME=ORCL and not SID=ORCL12 or SERVICE_NAME=ORCL12. The user hr was created in the ORCL pluggable database. With SID=ORCL12 or SERVICE_NAME=ORCL12, you connect to the root container, where this user does not exist, hence you receive the ORA-01017 error.

enter image description here

So instead of the connection string:


Use this for connecting:


Note the /orcl instead of :orcl12c.

: specificies an instance connection (SID), while / speficies a service connection (SERVICE_NAME). You have to specify the service name when connecting to a pluggable database, because multiple pluggable databases share the same instance, and the name of the service is what differentiates them.

enter image description here


Your connection string also needs to contain the username and password:


That should work OK.


Use the drop down menu: Driver Name: menu, and pick/use Oracle Thin (Service Name).

(Instead of: Service ID (SID)).

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