Sometimes it's just a login issue.

Trying to install iAS 10.1.2.2 on a 10.1.0.2 server, I got the following error, among others, while updating OC4J:

FAILED!
ERROR: Caught exception while undeploying 'portletapp' from 'home':
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at oracle.j2ee.tools.deploy.Oc4jDeploy.doDeploy(Unknown Source)
at oracle.j2ee.tools.deploy.Oc4jDeploy.execute(Unknown Source)
at oracle.j2ee.tools.deploy.Oc4jDeploy.deploy(Unknown Source)
at oracle.j2ee.tools.deploy.Oc4jDeploy.main(Unknown Source)
Caused by: com.evermind.client.orion.AdminCommandException: Could not connect to the remote server. Please check if the server is down or the client is using invalid host, ORMI port or password to connect: Connection refused
at com.evermind.client.orion.Oc4jAdminConsole.executeCommand(Oc4jAdminConsole.java:115)

Also got an error with wsrp-samples.

After spending quite a bit of time looking at log files, and finding nothing interesting, I realized it was a password issue.

Earlier in the day I had followed an oracle doc to reset ias_admin's password from emctl prior to installing the update.

Here's the thing -- to _really_ set the password, you have to login to iasconsole and change it there. Apparently that changes the passwords in more places than emctl does.

Problem solved.