The current version of Oracle SQL Developer requires at least Java 6, e.g. the 1.6 JDK. I talk about Java, JDKs, JREs and what all that means in a previous post if you need to catch up on the lingo.
Many versions of Java out there – 5, (more...)
Oracle Partner Network (OPN) has released three new video interviews focusing on Oracle’s products and partners in the embedded space:
1. Oracle Device to Data Center Platform
Ed Zou from Oracle introduces Oracle’s Device to Data Center platform, which is an common end-to-end development and deployment platform to address (more...)
This is a first articles in series, where I would like to study effect of various HotSpot JVM options on duration of STW pauses associated with garbage collection.
This article will study how number of parallel threads affects duration of young collection Stop-the-World pause. HotSpot JVM has several young GC (more...)
So we are running a quite a bit of automated UI testing and we have found over a large number of concurrent test nodes that even when the Xvnc plugin has correctly started that the environment is not always ready or reliable. This blog post looks at two changes we (more...)
There are bunch of graphical tools helping you to look inside of running JVM (VisualVm and JConsole are extremely helpful). Unfortunately, some times (almost always in my case), you may find yourself in SSH console on headless server side by side with your JVM (more...)
blogpost I showed how to disable the persistence of a UIComponent, but it was needed to write Java code to check for the specific component and change. In this blog entry I will show a more generic way to do this, with the attribute tag.
On the showDetailItem (more...)
At the time of writing this post, Oracle Forms 11g installations are configured by default to work with a specific JPI (Java Plug-In) version: 1.6.0_12. You can verify this by checking your formsweb.cfg file: grep jpi-version formsweb.cfg #jpi_mimetype=application/x-java-applet;jpi-version=1.6.0_12 Unfortunately, it seems Firefox is very particular when it (more...)
Are you using the Oracle Java and Developer Cloud? - Great platform
for POCs, development, training or even production environments. The
Oracle Cloud Java service is available, the Developers & Messaging
Service is in preview - try it out at https://cloud.oracle.com
At our WebLogic Community Workspace (WebLogic (more...)
In all of my career to date in IT there really has been three clear worlds in IT, the software development guys who are the bespoke tailors, the package guys who deliver off the shelf and the BI guys.
I'm going to admit a prejudice here. Until a couple of (more...)
I like to be outdoors when life allows so weather is always an interest for me. So i was very pleases to see forecast.io
becoming available with global coverage after being jealous of the US only "DarkSkys" app. It was also nice to see that there is a nice (more...)
As of PeopleTools 8.52 it is possible to use REST services for POST/GET functionality. However what do you do if you are on an older PeopleTools version, but still need to make a HTTP POST and then GET the response?
Enterprise Manager 12c is a product that is being deployed a lot lately, a vast improvement over previews version. For most DBA’s it is a tool they use regularly on a daily basis so performance is key. Fortunately oracle provides us with some documentation on how to size the repository database and heap size of the Oracle Management Service. An excellent white paper on EM12c sizing can be found here on OTN:
Interestingly enough it states that Oracle considers installation with +1000 targets as a medium sized em12c environment. That limit of +1000 targets is reached (more...)
I have been recently working on a client generator in the wadl.java.net project and I was solving a bug where I wanted to change path parameter on a URI. This turned out to be quite easy with existing classes that are part of the Jersey project.
First of (more...)
Most of the applications have to deal with "master/detail" type of data:
breweries and beer
department and employees
invoices and items
This is necessary for example to create application view like the following:
With Couchbase, and many of the document oriented databases you have different ways to deal with this, (more...)
On Linux low entropy can cause certain operations to be very slow.
SSL operations need entropy to ensure randomness. Entropy is generated by the OS when you use the keyboard, the mouse or the disk.
If an SSL operation is missing entropy it will wait until enough is generated.
Recently, I was working on renewed version of Coherence data loss listener. New version provides simple utility to attach partition loader to any cache. Such partition loader is guaranteed to be called for every partition of newly created cache or after partition has been lost. Unlike CacheStore, partition loader (more...)
SSH offers a very convenient way to execute shell scripts remotely. Code like
ssh myserver.acme.com << EOC
are fairly easy to write and read.
But while remote execution itself is easy, writing actual distributed code is total mess.
I’m a Java guy. I (more...)