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How risky is it to develop in Weblogic 10.x and deploy in Weblogic9.2.x?

I recently took on a relatively old project that works in weblogic 9.2. I need to work on some change requests. I know little about the weblog product.

The old DEV-Env is Windows based, but I don't have a window machine. I tried to download Weblogic9.2 for linux (32bits), however I can not find the link on the Oracle website after quite a lot of Google, but no working link was found.

So, the options for me are:

  • find a working link, download weblogic9.2 and work with it.
  • download and use version 10.x from oracle
  • set the window window (we have the weblogic9.2 installer to win)

3 is the last thing I want to do. If someone knows where I can get version 9.2, it would be great. If weblogic9.2 is not available, can I work with weblogic10.x and release up to 9.2 in production? how risky is it?

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Development in WLS 10.x and deployment in 9.2 may cause some problems.

There are many features that were updated in 10.x, such as Java 5-6, J2EE from 1.4 to 5, Servlet 2.4 to 2.5, JSP 2.0 to 2.1, EJB 2.1 to 3.0.

While most of the features here are backward compatible, you should be especially careful when developing.

I propose to develop only on the basis of the lowest functions of the common denominator and build on the same server on which you deploy it. (i.e. 10.x has a diff structure, and 9.2.x has a different one.)

EDIT: There seems to be a genuine binary file available on the PeopleSoft FTP site .

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This is definitely a risk. Different versions of Weblogic use different banks, so what works on 10.x may not work on 9.x. It is good practice to keep your QA and PROD environments as similar as possible, including node settings and startup options.

If your current PROD code runs on 10.x, I must upgrade your PROD environment to 10.x and continue development on 10.x. If not, then do what you can have 9.x in your DEV environment.

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