For a Real Application Clusters database, only one primary instance and one standby instance can be active during a switchover. Therefore, before a switchover, shut down all but one primary instance and one standby instance. After the switchover completes, restart the primary and standby instances that were shut down during the switchover.
 
When other instances are [...]

Popularity: 386 points

A couple of weeks ago I read an article in Oracle Magazine, edition May - June 2006. In the article written by Steven Feuerstein my attention was drawn to the heading "Recompiling Invalid Program Units". Over there he discusses the differences between utl_recomp, dbms_utility.compile_schema and a utility written by Solomon Yakobson. When I saw that article I [...]

Popularity: 382 points

What is a web service anyway?A web service is a software component that can be called from another software component.Communication with web services is done via the SOAP protocol. Web services can be implemented in any environment (well, in theory). They can also be called from any environment, as long as it can handle SOAP [...]

Popularity: 1008 points

 
Yes, this is Yet Another Discussion on Replication (YADR). Indeed, this beast seems to pop up all the time. Today’s trigger was a discussion with some architects on Disaster Recovery in a SOA environment. I’ll try to give it a nice twist, and I will  also keep my lunch-budget in mind.Marketing Tagline: with SOA and [...]

Popularity: 294 points

Following our cookbook we installed CRS and RAC software on OCFS2 on our linux5 server.
See our PoC MAA- Blogs 5,6 and 7 about OCFS2, CRS and RAC install respectively.
Overview of the file system on linux5:
[oracle@linux5 ~]$ df -k
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
                      67829336  11887112  52496672  19% /
/dev/cciss/c0d0p1       102182      6774     95408   7% /boot/efi
none                   [...]

Popularity: 670 points

This years JavaOne was filled with JSF, Ajax and even more the combination of the two. On the Pavilion several commmercial vendors were selling their ajax enriched jsf components. The blueprint team showed us the petstore. Oracle showed us how to build custom ajax enabled jsf components. And so on.
In my previous post I noted [...]

Popularity: 556 points

The blueprints are back, The Petstore is back and Google smashes them exactly one hour later. What I’m talking about? This morning Sun did a presentation of their new Blueprints for Web 2.0 (sorry, it is not my choice of words) Applications. And to support their technical vision (what else is a generic blueprint) they [...]

Popularity: 260 points

Yesterday I visited a session by Jetbrains Dmitry Jemerov about IntelliJs’ new product called teamServer (TS-5033 : IntelliJ IDEA: Integrated Team Environment) and I really was flabbergasted by the presented material. Everybody knows Continous Integration is a must have in your projects and everybody also knows Continuous Integration does not work or at least does not [...]

Popularity: 438 points

So what if you want to develop a rich portal application, let’s use the standards!
Standards are their to make live easy for you, right…..?  
I want to create a Portal application with a rich and easy to build interface, this leads me to the following standards JSR168, the portal standard and JSR127 the JavaServer Faces specification. [...]

Popularity: 493 points

Every now and then the discussion about the "processes" parameter flares up.Setting this parameter too low results in ORA-00020 "maximum number of processes 1024 exceeded", but too high a setting will strangle the database-server with processes. 
My favorite application manager always wants me to increase the number of processes. For an app-server and for its end [...]

Popularity: 294 points