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Can I upgrade from WebSphere Application Server Express 5.1 to Application Server

One of my AIX box is running  IBM WebSphere Application Server - Express
Wondering If I can upgrade to WebSphere 51 Application Server OR do you suggest I should go for WebSphere 51 ND. And If it is possible to upgrade from Express to Application Server or ND, Do I need to deploy the application again.

If I need to move from 5.1 express to WebSphere 6.1 can I migrate from the existing version?

Thanks In Advance.

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1 Solution
HonorGodSoftware EngineerCommented:
Q: Can I "upgrade" from Express to Base, or ND?
A: Sort of.  What you want to do is:

- Use the backupConfig command script to save a copy of your configuration details (e.g., deployed applications, datasources, etc)
- Unfortunately, then you need to uninstall the Express version,
- Then Install the desired version (e.g., Base, or ND)
  ** Note: Use the same hostname, and application server name when you
                 install and configure the new Application Server
- Then you should be able to use restoreConfig to "redeploy" and define all
  of the applications and resources.

Q: Is this guaranteed to work?
A: I doubt it.  But it is your best best

Q: Should I upgrade to 5.1 Base, or 5.1 ND?
A: No, go to 6.1, or 7.0 would be even better.
jasbaniAuthor Commented:
Thanks you for replying HonorGod

Actually the current scenario is that one of my application is running on WAS51 - Express. Actually I was not supporting this environment earlier. Application team work on this and it is installed to some database server. I figured out that this environment was build on WAS51- Express. Not sure why they install Express.. Is there any benefit installing WAS51 Express over Base or ND. (Like WAS61 Express comes with full version of Rational Web Developer tool).

So here I am going to repeat the steps you suggested.

Take configuration backup
Uninstall WAS51 -Express
Install WebSphere 61 Application Server (I think ND is not required, pls suggest if it has advantage on this, since they were running on WAS51 express)
Host name must be same as existing environment
Restore the Configuration

Q: Is this guaranteed to work?
Why do you think that you doubt that it will work well or not?

Thanks for replying Again

HonorGodSoftware EngineerCommented:
Q: Why do you think that you doubt that it will work well or not?
A: Well, the backConfig / restoreConfig are designed to be used on an unchanging environment.  So, that is why I don't know for certain whether or not they will work if you change from an Express environment to some other.

Points to consider:
- WebSphere 5.1 is "out of support", so if you had to contact IBM for some support issue, then you (i.e., your company) will have to purchase a service agreement.  I have no idea what this kind of "extended support agreement" would cost.

Q: What are the differences between Express and Base, and ND?
A: Express is a limited single application server environment.
    Base is a full function single application server environment.
    ND is a full function multiple application server environment, allowing for
    A Deployment Manager to be used to manipulate/manage an entire cell
    i.e., multiple node agents, each of which "oversees" 1 or more Application

Q: Is there a cost difference?
A: Absolutely.

Q: What is the cost difference?
A: I don't know.  You would have to contact IBM.  I "think" it depends upon
    a number of factors (e.g., is this for an educational institution?)

  If you are, or will be, running a single Application Server, then there shouldn't be a need for the Network Deployment (ND) aka Deployment Manager (DM) version of the product.

Recommendations: Move to at least version 6.1.  If possible, move to 7.0

Hopefully this helps.
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jasbaniAuthor Commented:
How about if we Install WebSphere Application Server 61 on this box without bringing down WAS51 Express and do port change for any conflict and rebuild and redeploy this application on WAS 61 Base, Would that work perfect?

Thanks for your replies.
HonorGodSoftware EngineerCommented:
Yes.  In fact, if the server has enough power, memory, and disk space, that is recommended
jasbaniAuthor Commented:
Thanks for your quick response HonorGod.

I accept your all replies and will go with Installation of WAS61 Application Server on different mount and then redeploy the application. Thanks Again.
HonorGodSoftware EngineerCommented:
You are very welcome.  Thanks for the grade & points.

Good luck & have a great day.
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