Oracle IAS vs MS IIS

My business web applications are currently running on IIS which is connected
to a propreitary SQL server(InfoPlus21 from AspenTech), an Oracle database (8.1.5) and an ERP server
which is running on MS - Sqlserver. Some one told me to go for a middle
tier infrastructure usinh Oracle 9i App. server to connect to these multiple database.
I installed oracle 9i Application server(downloaded from OTN) on a Windows 2000 server.
I converted all my asp codes to jsp and servlets in the Oracle Application server.
At the end of the day, I find working with IIS is easier than with Oracle 9i App.
server because of its tidious installation and configuration procedures. I want to know what is
the better part instored in Oracle app server when compared to IIS. Many people whom i meet
recommend Oracle app server but i am stranded without an answer for my question "What is the
 advantage of oracle app server than MS-IIS?". Can anyone who has experienced the pros
share their views with me.

Thanks.
 
masharemalaAsked:
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vzilkaConnect With a Mentor Commented:
IIS has the following issues:
- Security (many security patches are constantly released, many hacks/viruses exist on the net)
- Performance (ASP's are interpeted, which make them slower in large traffic)
- Only works on windows

IIS has the following advantage:
- Quick development
- Very popular

OAS has the following issues:
- Installation (defintely a night mare)
- Development (J2EE is more complex than Microsoft environment)

OAS has the following advantages:
- Cross platform (Windows, Linux, Solaris, etc)
- Components - Java, Oracle Forms, Interconnect for integration, OHS (Apache - the most popular web server around)
- Performance - OC4J (Oracle's standalone J2EE container) is speedier than IIS, and JSPs are compiled (another performance boost)
- Security - OHS/Apache is considered more secure than IIS.

This is a nutshell.
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