Options for supporting web toolkit applications

The various changes which have occurred between 10 and 11g are very detrimental to any users developing or supporting applications built with the original web toolkit (not APEX).
In 10g, you could download the database and companion CD and end up with a database and http server with mod_plsql running in no time flat.
In 11g, the database install is just as easy, but the http server install requires "Oracle Fusion Middleware Web Tier" which weighs in at a scary 1Gb+ (for a webserver) and assumes you are wanting to run lots of instances across an "enterprise grid". Even finding the error logs for when it doesn't work is hard. I spent a happy 4 hours trying to install it (following the instructions) without success.
So, you think, what are the alternatives.....
1. You could use the EPG, but the majority of advice is that this isn't suitable for production deployments
2. You could use the APEX listener, but that doesn't support some of the features: flexible parameters, basic auth, etc
There are a number of things Oracle could do to rectify this
1. Open source mod_plsql. If they are not going to develop it further then let someone else do it for them
2. Maintain backwards compatibility with mod_plsql in the APEX listener - not every application is APEX
Hopefully someone from the APEX listener team can say "yes, we'll be making the apex listener compatible with all mod_plsql features in the next release". Fingers crossed...
This was expressed more eloquently by John Flack here
http://it.toolbox.com/blogs/jjflash-oracle-journal/application-express-listener-an-open-letter-35464
Edited by: user486189 on 07-Aug-2010 04:52

Thanks for the favorable mention of my blog - I updated that entry with a later one based on the Release Candidate version of the Apex Listener. I haven't given the production version a really good try yet, but what I've seen is pretty close to what I saw in the early adopter versions, except that the documentation is much better - bravo.
You've named two alternatives to mod_plsql. Here are a few more:
mod_owa: This is similar to mod_plsql, but it works under the generic version of Apache web server, rather than Oracle's customized version, Oracle HTTP Server. It is configured a little differently from mod_plsql and has some variations in the way it supports some of the more advanced features of the PL/SQL Web Toolkit, like flexible parameters. Joe Lennon wrote a blog entry about mod_owa here: http://www.joelennon.ie/2008/12/09/install-apache-mod-owa/.
The base website for mod_owa is: http://oss.oracle.com/projects/mod_owa/dist/documentation/modowa.htm
Thoth Gateway: If you have a Microsoft IIS web server, you might try the Thoth Gateway. Find it here: http://code.google.com/p/thoth-gateway/
DBPrism: This is another JEE based application that I know that some are using. DBPrism was not primarily intended as a mod_plsql replacement, but does do that too. Find it at: http://www.dbprism.com.ar/en/index.html
Please be aware, I haven't tried these (except a brief trial of an earlier version of mod_owa) so I can't vouch for them.

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Migrate/Import/[etc.] PL/SQL Web-Toolkit Application to APEX

Hello all,
I've only recently learned about APEX and have dabbled with it for a little while, and I'm quite impressed with how amazingly quick it is to develop applications with it.
A few co-workers and myself are trying to convince "The Management" that we should pursue using APEX to develop our Enterprise Applications. Currently we write our web apps using the PL/SQL WebToolkit, accessing our applications at URL's like: http://host/dad/[package.]procedure .
Recently (within the past month) there was a convention in the Southern California region where I believe some people from TUSC presented on APEX. As I understand it, they said it was possible to migrate existing applications (written in packages and procedures) to APEX. I'm also told that it is possible to view the PL/SQL that is rendered by APEX to display the application.
We've practically sold our Director, however he has a few outstanding issues he's asked me to research, as he feels his boss would be most concerned with:
* How much effort will it take to migrate/import/etc the PL/SQL WebToolkit Application to APEX
* Should the need arise, how much effort would it take to move from APEX back to PL/SQL WebToolkit
I've tried researching these topics over the past few days and I haven't really come up with much. I realize that you can call PL/SQL packages/procedures/etc from within a region, but as I read on a thread in these forums ( How to jump from mod_plsql to APEX! ), you still won't be able to take advantage of the Items, Computations, Processes, etc. Is there, in fact, a way of importing a PL/SQL-developed Web Application into APEX to take advantage of all its tools? I would imagine it would be quite a feat to be able to create the items for the form fields, maintain the layout and such, but I need to provide my Director with as much information on these topics as possible.
Many of us developers are really excited at the prospect of developing with this tool; it would be a shame to lose the opportunity over not being able to provide any information on the topics above.
Thanks in advance for your assistance,
-Luis

Hi Luis,
I had a client a couple of years back who had an existing PL/SQL Web Toolkit application who used the htp.p etc calls to generate the HTML (and in some cases CSS) for their site. They were interested in using Application Express and asked me to design a new administration module for their site (which I did). The development went extremely smoothly so they then asked about re-writing their existing site in APEX (since maintaining the old site was not a straight-forward task).
Fortunately for me, the original designer had the foresight to put lots of the application logic into packages (which I could reuse), but I quickly (about 2 or 3 days from memory) created a custom theme and templates in APEX which gave the same look and feel as the existing site.
Personally, I think if you tried to re-use the existing htp.p calls (by using PL/SQL regions etc), then you would be missing out on some of the major advantages of using APEX (such as the ability to easily change the look and feel of your application).
I always think that migrating to a new tool/platform etc is a great opportunity to re-examine your existing code to perhaps see if you can do things differently (speed up those queries, perhaps make the navigation more logical etc).
So, yes you can certainly re-use lots of your existing packaged logic, but I would also take the leap and use the features that Application Express provides to make future maintenance of your application easier.
Just my thoughts.
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2. The original nocache.js file gets changed to nocache.<date>.js
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Note - GWT takes care of caching of most of the files by using a GUID equivalenet each time you compile, so it's just a couple of files that really need to not be cached.
Anyway, I'm not explaining this solution very well, but drop us a line if you need to understand this approach further.
And lastly, my feedback about GWT - It Rocks! Everyone loves the result, it's easy to build and maintain, it offers a great user experience, and it's fast. Not a replacement for transactional apps; but for the occasional user - go for it.
Matt
Edited by: Matt Harding on May 22, 2008 7:48 AM

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Message was edited by:
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Options for supporting web toolkit applications

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