Skip to main content

UKOUG Day 1

After a rough flight yesterday I arrived in Birmingham. The city has a complete Christmans atmosphere, as you might expect at this time of year. There even is a 'real' Frankfurter Christmas market with 'Beer und Bratwurst' and hot wine - and lots and lots of other more or less Christmas related stuff. I made some pictures, but on my (new) laptop the drivers for the camera are not installed yet, so I'll add the pictures later on...

'MeThis morning the UKOUG started with two keynotes on '30 Years of Oracle'. The one of Tom Kyte was amusing as ever. At that moment I realised that I volunteered to introduce him this afternoon, probably for an audience of over 1,000 people. I'm more nervous about that than about my own presentation!
After that I went to an presentation on APEX 3.1 New Features. This version is already available on OTN (not for download, but to play with) and has a lot of interesting and nice looking features. For instance the end-user can dynamically change reports by adding sorts, filters, computations, charts and colors - and save these reports for later use. The 3.1 versions should be available for production around March 2008.

The second session was about Forms Upgrade, Integration and Lifecycle using PITSS.CON : A repository based addition for Forms and Reports Development. To me, the most interesting part is that PITSS is extending PITTS.CON to extract business rules and the data access layer form Forms and put it in the database. The main reason to do so is to 'service enable' the Forms-business-logic, in order to open it up for other applications. Another use can be : An easy change of the (Forms) UI to another UI - but that's just my addition. Btw : PITSS.CON has some overlap with the Designer functionality, so using both products at the same time may be challenging....
'Tom
Now I just finished my own presentation about the transformation of Oracle Forms to Java. It all went very well. The room was filled for 2/3 with about 75 people (including Grant Ronald and Duncan Mills), I finished right on schedule and even got time to answer some questions. Now waiting for the introduction of Tom Kyte - who happens to sit right behind me in the Speaker Lounge at this moment.

The introduction of Tom went rather well. Luckily you don't see that much of the audience at such a large stage and with all those lights. Marco (of AMIS) took some pictures, I'll post them later on. Tom's session on 11g New Features for DBA's was also very good - even for a non-DBA like me. Some slide pics are here, here and here.

Later that evening the Blogger Meetup was held at a pub close to the ICC. It was nice to meet a lot of those 'virtual' persons in real life (again).
Post a Comment

Popular posts from this blog

Dockerize your APEX development environment

Nowadays Docker is everywhere. It is one of the main components of Continuous Integration / Continuous Development environments. That alone indicates Docker has to be seen more as a Software Delivery Platform than as a replacement of a virtual machine.

However ...

If you are running an Oracle database using Docker on your local machine to develop some APEX application, you will probably not move that container is a whole to test and production environments. Because in that case you would not only deliver a new APEX application to the production environment - which is a good thing - but also overwrite the data in production with the data from your development environment. And that won't make your users very excited.
So in this set up you will be using Docker as a replacement of a Virtual Machine and not as a Delivery Platform.
And that's exactly the way Martin is using it as he described in this recent blog post. It is an ideal way to get up and running with an Oracle database …

Refresh selected row(s) in an Interactive Grid

In my previous post I blogged about pushing changed rows from the dabatase into an Interactive Grid. The use case I'll cover right here is probably more common - and therefore more useful!

Until we had the IG, we showed the data in a report (Interactive or Classic). Changes to the data where made by popping up a form page, making changes, saving and refreshing the report upon closing the dialog. Or by clicking an icon / button / link in your report that makes some changes to the data (like changing a status) and ... refresh the report.  That all works fine, but the downsides are: The whole dataset is returned from the server to the client - again and again. And if your pagination size is large, that does lead to more and more network traffic, more interpretation by the browser and more waiting time for the end user.The "current record" might be out of focus after the refresh, especially by larger pagination sizes, as the first rows will be shown. Or (even worse) while you…

Push changed rows to an Interactive Grid

For pushing changes from the database to the end user, the regular solution is using websockets. A change in a record is detected - using a trigger or using the CQN (Change Query Notification) feature - and a notification is send to a websocket server. That websocket server broadcasts the notification over a channel to all browsers that are tuned in to that websocket channel. Then the browser reacts to that notification, usually showing an alert or refreshing a report. This trick is described on multiple sites, just Google for "oracle apex websockets" or similar.

So back in the old days, we used that notification in the browser to refresh the (interactive) report. But along comes the Interactive Grid (IG). While he full-refresh mechanism still works for IG, an IG has also the option to refresh just one row.  So wouldn't it be awesome that just the changed row(s) get refreshed upon a change in the database, instead of the whole report? Can we do it ... yes we can!
First i…