Common WebLogic Problems

Oracle WebLogic was originally developed by BEA Systems, a company which was acquired by Oracle in 2008. Since WebLogic had a much larger user base, Oracle quickly made their intentions to deprecate their own Oracle Application Server (OAS, sometimes referred to as OC4J, the J2EE container component) in favour of WebLogic as their primary offering.

C2B2 have worked with WebLogic since it was owned by BEA and have partnered with both BEA and Oracle. As partners, C2B2 have worked on a wide variety of customer engagements across Oracle’s full middleware portfolio.

Migration from OAS to WebLogic

Oracle Application Server has been deprecated for a number of years now, since Oracle have pushed forward with their plans to offer only WebLogic as their application server of choice. Even so, many businesses are still using OAS or OC4J to run their Java EE applications and are increasingly finding that they need to migrate to WebLogic to avoid being left with legacy infrastructure that they can no longer support effectively.

Fortunately, Oracle has anticipated the need for the process of migration to be as seamless as possible so, for their part, they have put a lot of effort into helping customers migrate their infrastructure. Unfortunately, however much work Oracle might do to help with this migration, there will always be problems or unforeseen circumstances due to the dependencies that applications might have on OC4J which change when moving to WebLogic.

Non-standard technology

A great advantage of buying from a company like Oracle is the ecosystem that you get along with the product. WebLogic, for example, has many other components built by Oracle to improve on the standard Java EE way of doing things.

Problems can occur purely down to the vast amount of products and services that Oracle offer. Should you use WebLogic’s JMS implementation, Oracle’s Advanced Queuing (AQ) or Oracle Store-And-Forward for your messaging scenario? How do they differ? Is one better than another, or just better suited to certain applications?

It’s clear to see that, although you can be sure that Oracle has a product or component to suit your scenario, it’s a significant task to review even the portfolio of components that come with WebLogic, let alone WebLogic compatible software from Oracle.

Performance Tuning

With considerations like migration and such a range of technologies to use, how can you be sure you’re getting the best performance out of your infrastructure? Consider the scenario – you have a suite of applications, migrated from OC4J which used to use AQ for messaging but now bridge endpoints with Oracle SAF. Are the defaults for the connection pools associated with your data sources optimal for persistent messaging?

It’s very common for users who are not familiar with performance concepts to get completely lost when trying to tune every aspect of their application and server. Should you buy more hardware? Do you need to? Performance issues can get very expensive, whether in terms of buying additional hardware, man-hours to maintain responsiveness or just in terms of your reputation to customers so it should never be an afterthought.

How can C2B2 help?

Migration complexity increases with the size of your environment and number of applications. With this added complexity, having C2B2 either on site or a phone call away gives you the reassurance of years of hands-on, in-depth knowledge and experience. We can provide remote assistance and support should you run into any problems, or provide on-site consultancy to work through the process with you, making sure that you avoid the problems in the first place.

With C2B2’s extensive knowledge of Oracle products we can provide recommendations for improvements regarding the way you use your current products or we can help when you’re deciding which products are most appropriate if you’re considering a purchase. Since we are independent, you can always be sure that the information we give is impartial.

As for performance, C2B2 quite literally wrote the book on how to get the most out of an Oracle SOA suite environment and have almost certainly come across whatever issue you may have.

Contact us to find out how we can support your WebLogic environment 24/7

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