Deinstall Portal 11g or Portal Instance

How to recover from Portal 11g Configuration Failure?

If portal 11g configuration fails in the middle due to network flow problems, such as: the needed port is not open, how do we recover from there?

Answer:  Deinstall Portal Instance. And then reconfigure portal.
Below describes the steps to deinstall Portal Instance.  Next post will describe how to reconfigure Poratl 11g.

- Use windows explorer to find out where setup.exe is located. Most likely it is located under a directory like the following:
    oracle\poratl\portal_home\oui\bin
- Open up a command line prompt with "run as administrator", and execute the following:
       1.  cd oracle\poratl\portal_home\oui\bin
       2.  setup.exe -deinstall
            In "Deinstall Type", select "Deinstall ASInstance managed by Weblogic Domain"
       3. On the next screen you will need to enter the following information:

      a. Domain Host Name:
      b. Domain Port No: (i.e. 7001)
      c. User name: (i.e. weblogic)
      d. Password: <password for weblogic admin user)

    Note: Make sure the WebLogic admin server is running.

- In most cases, there is no need to deinstall Oracle_Home if you are trying to recover from a configuration failure.  But in the case that you do need to deinstall Oracle_Home, reran "setup.exe -deinstall" and setlect type "Deinstall Oracle Home".
   Use the following link as a reference:

http://www.idmworks.com/blog/entry/uninstalling-oracle-fusion-middleware-products