Step 1: Learning How To Deploy an EAR File to OAS 10g

This morning I worked through the JDeveloper tutorial "Deploying A Web Application" to learn how to package and deploy an EAR file to an OAS 10g Application Server. The tutorial uses a stand-alone OC4J instance instead, but I figured deploying to a real, live OAS 10g R2 10.1.2.0.2 server couldn't be much different.

I followed the tutorial and everything worked as advertised. Then I created an OC4J instance on my 10.1.2.0.2 middle-tier. I created an application server connection for the OC4J instance, tested the connection successfuly, and attempted to deploy the EAR file created during the tutorial.

This is what I get in the JDeveloper deployment log:

---- Deployment started. ---- Apr 25, 2007 1:15:29 PM
Target platform is Oracle Application Server 10g 10.1.2 (Windows) (hw-05-0193_test).
Wrote WAR file to C:\oracle\jdeveloper\jdev\mywork\OrderEntry\ViewController\deploy\WebArchive.war
Running dependency analysis...
Wrote JAR file to C:\oracle\jdeveloper\jdev\mywork\OrderEntry\Model\deploy\ModelArchive.jar
Wrote EAR file to C:\oracle\jdeveloper\jdev\mywork\OrderEntry\Deployment\deploy\OrderEntryApplication.ear
Invoking DCM servlet client...
C:\oracle\jdevstudio_10.1.3.2\jdk\jre\bin\javaw.exe -Djava.protocol.handler.pkgs=HTTPClient -jar C:\oracle\jdevstudio_10.1.3.2\jdev\lib\oc4j_remote_deploy.jar http://hw-05-0193.emts.tybrin.com:18101/Oc4jDcmServletAPI/ ias_admin **** redeploy c:\oracle\mid1012 C:\oracle\jdeveloper\jdev\mywork\OrderEntry\Deployment\deploy\OrderEntryApplication.ear OrderEntryApplication test
Initializing log
Servlet interface for OC4J DCM commands
Command timeout defined at 600 seconds
Executing DCM command...
Executing command redeploy c:\oracle\mid1012 C:\oracle\jdeveloper\jdev\mywork\OrderEntry\Deployment\deploy\OrderEntryApplication.ear OrderEntryApplication test
Command = REDEPLOY
Reading application's ear file
Ear file was successfully read
Opening connection to Oc4jDcmServlet
Setting userName to ias_admin
Sending command to DCM servlet
HTTP response code = 200, HTTP response msg = OK
Command was successfully sent to Oc4jDcmServlet
Receiving session id from servlet to check command status
Session id = 0a0b0d0346b5c27f8ee09107497488b1f5557e188584
Please, wait for command to finish...
Checking command status...
Setting userName to ias_admin
Setting Cookie to JSESSIONID=0a0b0d0346b5c27f8ee09107497488b1f5557e188584
Checking command status
HTTP response code = 200, HTTP response msg = OK
Command has not finished yet
Checking command status...
Setting userName to ias_admin
Setting Cookie to JSESSIONID=0a0b0d0346b5c27f8ee09107497488b1f5557e188584
Checking command status
HTTP response code = 200, HTTP response msg = OK
Command has finished
Receiving command exit value
Receiving command output
**** No output was received from command
Closing connection to Oc4jDcmServlet
#### DCM command did not complete successfully (-8)
#### HTTP return code was -8
Exit status of DCM servlet client: -8
Elapsed time for deployment: 29 seconds
#### Deployment incomplete. #### Apr 25, 2007 1:15:58 PM

And this is the error OAS 10g EM reported when I copied the EAR file to the OC4J applications directory and attempted to use the OC4J's applications page to deploy the file:

Deployment failed: Nested exception
Resolution:

Base Exception:
java.rmi.RemoteException
deploy failed!: ; nested exception is:
oracle.oc4j.admin.internal.DeployerException: Unknown assembly root-tag attribute: xmlns:xsi. deploy failed!: ; nested exception is:
oracle.oc4j.admin.internal.DeployerException: Unknown assembly root-tag attribute: xmlns:xsi


As usual with Oracle, nothing is ever easy. Time to give the documenation a read.

Update: Googled the OTN Forums and found a post relating to the same error. Several posts down was a suggestion to read Chapter 22 of the ADF Developer's Guide - this discusses deploying applications developed with JDev 10.1.3 on OAS 10.1.2 platforms. Apparently they use different versions of the JDK. I browsed the guide for a moment, and then decided to see if there was something platform-specific in the deployment process. I followed the tutorial to create a new deployment profile, but found nothing platform-specific. But I went ahead and tried to deploy it to the 10.1.2 application server and - it worked! Maybe the deployment process writes a makefile or something platform- and version-specific. . .

Now I have to figure out the username and password the application is prompting me for. The one used for the OC4J standalone doesn't work and neither does the ias_admin password for the 10.1.2 OAS.

Another update: The username/password was a non-issue. Having two web servers on the same box is always confusing (my OHS uses port 7778. . .)

But now the control page for the OC4J says that although the application is present, it's status is "not loaded". I bet Google loves me (and every other self-taught Oracle wannabe).

One more update: I checked the deployment properties in JDeveloper and I forgot to select some options. Undeployed from app server, redeployed from JDev and got the original error again. Just another false trail.