ADF Essentials RCU DB Type : Where is " Java DB " ?

Question

I want ADF Essentials.
http://www.oracle.com/technetwork/developer-tools/adf/overview/adfessentials-1719844.html
I downloaded "Application Development Runtime", ofmwls_jrf_generic_12.1.1.0.0_disk1_1if1.zip , 1.5 GB.
My understanding is that this, ADF Essentials Application Development Runtime,
is Weblogic Server where the ADF Framwork is limited to the Model, View and Controller.
Just below the "Download File" button is a link entitled " Install Guide " and points to a book entitled
"Installing and Configuring the Oracle Fusion Middleware Infrastructure, 12c (12.1.2), E38451-01.
http://docs.oracle.com/middleware/1212/core/INFIN/index.html  ( and the PDF file has 48 pages ).
I have completed step / section 3.1.1 entitled " Installing and Configuring a Certified Database " (page 18).
http://docs.oracle.com/middleware/1212/core/INFIN/create_domain.htm#BABGBHDE
3.1.1 Installing and Configuring a Certified Database
Make sure you have installed and configured a certified database, and that the database is up and running.
         Oracle JDeveloper and ADF 12c (12.1.2) Supported Systems, Last Updated: July 10, 2013
         http://www.oracle.com/technetwork/developer-tools/jdev/documentation/1212-cert-1964670.html
I chose Java DB and set the system variables as follows...
NAME & VALUE
VERIFICATION
JAVA_HOME = C:\PF\Java\jdk1.7.0_40
> echo %JAVA_HOME%
PATH includes %JAVA_HOME%\bin
> java -version
DERBY_HOME = %JAVA_HOME%\db
> echo %DERBY_HOME%
PATH includes %DERBY_HOME%\bin
> sysinfo
The Java DB is up and running / started as a Network Server via
           > java -jar %DERBY_HOME%\lib\derbyrun.jar server start
The next step is 3.1.2 entitled Starting the Repository Creation Utility ( RCU ).
The third screen is entitled " Database Connect Details " and the first field is "Database Type" with a
pull-down menu offering 5 choices. They are...
1) Oracle
2) Oracle Database enabled for edition-based redefinition
3) Microsoft SQL Server
4) IBM DB2
5) MySQL Database
I expected " Java DB " to be one of the choices.
Where is " Java DB " ?
For the RCU Database Connection Screen, I set the fields to the following values...
DATABASE TYPE: Oracle
HOST NAME:         localhost
PORT:                   1527
SERVICE NAME:    jdbc
USERNAME:          Michael
PASSWORD:          itsAsecret
ROLE:                    SYSDBA
Clicked " NEXT " button and RCU Response is " IO Error: Unexpected packet ".
The Command Prompt window where Java DB was started responds as follows...
Mon Oct 28 19:06:04 CDT 2013 : Execution failed because of a Distributed Protocol Error:  DRDA_Proto_SYNTAXRM; CODPNT arg  = 0; Error Code Value = 3. Plaintext connection attempt from an SSL enabled client?
org.apache.derby.impl.drda.DRDAProtocolException: Execution failed because of a Distributed Protocol Error:  DRDA_Proto_SYNTAXRM; CODPNT arg  = 0; Error Code Value = 3. Plaintext connection attempt from an SSL enabled client?         at
org.apache.derby.impl.drda.DRDAConnThread.throwSyntaxrm(Unknown Source)         at org.apache.derby.impl.drda.DDMReader.readDssHeader(Unknown Source)         at org.apache.derby.impl.drda.DRDAConnThread.exchangeServerAttributes(Unknown Source)         at
org.apache.derby.impl.drda.DRDAConnThread.sessionInitialState(Unknown Source)         at org.apache.derby.impl.drda.DRDAConnThread.run(Unknown Source)

Answer 1

I think I can answer my own question.
Here, http://www.oracle.com/technetwork/developer-tools/jdev/documentation/1212-cert-1964670.html
the fine print says...
" Databases
The following table identifies databases supported by JDeveloper and ADF.
JDeveloper support refers to using the modeling tools, browsing the database schema from the Database navigator, creating offline database objects, and using the SQL*Worksheet. For ADF, database support entails using the database as a data source for ADF Business Components. ".
Interpreting the text as is, the databases listed may (or may not) be supported by the RCU.
What customers are also interested in knowing is databases supported by the RCU.
On the web page for "Supported Systems",
a new Databases table with an additional column for the RCU would be an improvement.