Integrated Weblogic Server Domain

I was developing an application on JDeveloper 11g and deploying it on intergrated weblogic server. In my application i was authenticating using my own authentication provider but when i configured it on weblogic, weblogic failed to start. I was not finding any configuration file where i can revert security settings of weblogic but after some try i found it and thought to share it with others. When you install JDeveloper on windows, it places configuration files under "C:\Documents and Settings\user_name\Application Data\JDeveloper". Here you can find all settings for jdeveloper and integrated weblogic. Under this directory there is a folder with something "system11.....". Now to change weblogic related settings, open "defaultDomain/config.xml" and change it accordingly.

Pros and Cons of JDeveloper 11g and ADF from begginers Point of View

I have started to use JDeveloper 11g and ADF for one of my enterprise level project. I didn't use any part of ADF before. Its now one month and i want to share with world what i found in ADF with JDeveloper 11g.

Pros:
- It is based on MVC pattern and cleanly separates your business logic from presentation layer.
- It has built in support for AJAX
- Very rapid development because most of the development one can do declaratively by just drag and drop components on pages and like that
- Most important and exciting feature from me was very good support of LOV. LOV is required in almost every business application and with ADF i don't have to do any code for LOV just a query and some very small configurations and that's it.
- Rich Tables supporting LOV, combo box and others.
- It provides good hooks to develop own framework or utility classes to suit development e.g. I want to extend all entities from my own class and i can do it very easily.
- One of the unique feature of ADF 11g is ADF Task flow which faciliates developer to define reusable navigation and avoid cluttering of all navigation rules in one file which happens in JSF

Cons
Now we discuss cons of ADF and JDeveloper 11g
- JDeveloper is buggy and crashes many times espeically when one does refactoring or deleting some resources
- You will have to spend good time to learn ADF if you didn't have prior experience with Oracle technologies
- Query component in ADF Faces which is used to build criteria does not have option to change the layout of fields like grouping etc.
- LOV which are generated are also buggy. I am still facing one problem and no one still gave me solution for that.
- You will have to do lot of hit and trials to understand the behaviour of layout components

JDeveloper11g Startup error

I installed JDeveloper11g Studio Edition with no JDK bundle but when i tried to start JDeveloper, it gave me error

Unable to start Java Virtual Machine located at ....

In order to fix this type of error, go to installation_directoy\Middleware\JDeveloper\jdev\bin folder
and edit file jdev.conf.
Locate line "AddVMOption -XX:MaxPermSize=256M".
Now add another line just below this line:

AddVMOption -Xmx256M