Migrate from oracle portal to tomcat server

Can we move weblogic portal application to tomcat server ? if yes, what it will take to move the application ?

If no, then which are the other servers available. I want to get rid of weblogic because it is very costly server and we are not using any application server features.

Are you using portlets? Tomcat isn't a portal server, so if you need that, you will have to investigate one that can run on top of Tomcat, like Liferay. I don't have any experience porting from one portal server to another, but they do supposedly implement the same standards, so it should be possible. On the other hand, if you are just doing JSP and Servlets, or JSF, then the migration should be fairly painless. It might be just as easy as deploying your war file on Tomcat and seeing what happens.

@Greg, Thanks for your reply.

I am using portalets, portal, book etc (weblogic specific features). Is there any way of migrating application to any other server ?
Maybe using some third party tool, jar etc

I don't think you'll find a magic porting tool, but there are surely white papers, blogs, etc. Once you choose a portal server to target, you can start researching those. My experience with this kind of porting is that it can be tricky but it's possible. Again, I've never had to port from from one portal server to another. I once ported from one app server to another, and several times have ported from one version of an app server to another, which can be just as problematic.

Thank you again for your reply Greg. Can you please redirect to any blog or white papers which will be useful for me. I searched on net but didnt come across any useful post.

Hi Swapnil, could you please share your experience for this migration if it is done successfully. As I have the same migration to be performed and your opinion and suggestions would surely be helpful.

Welcome to the Ranch I am afraid SG hasn't been active for several years, so you will probably not get any more information from him. Have you looked for white papers, etc?

Yeah, after a decade a lot of people aren't even working for the same employer, much less the same project, and often don't even remember much about it.

However, the basic architecture of WebLogic and Tomcat remain fundamentally the same. WebLogic is a full-stack JEE server. Tomcat is a minimal-stack JEE server.

Tomcat can handle servlets and JSPs, provides JNDI services, database connection pooling and container security, but things like JPA/EJB, JavaMail, and other advanced JEE services are not provided by Tomcat. Most of them are available from library implementations, but that means that a Tomcat WAR is not directly interchangeable with a WebLogic WAR nor the reverse.

Almost any WebLogic WAR-based webapp can be retro-fitted for Tomcat, but it may take some work. Tomcat doesn't support EAR-based apps as such at all, however, and EJB logic may need modification because while there are several JPA provider libraries for Tomcat webapps (and general use, actually), JPA is a subset of EJB3 and doesn't provide some of the EJB-specific services.