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September 2012

VirtualBox 4.1.22 Released…

I’ve not finished updating my VirtualBox guest additions for 4.1.20 and here comes 4.1.22. :)

You can find the changelog and downloads in the usual places.

Happy upgrading!




OOW Bloggers

Pythian, in the guise of Alex Gorbachev, is organising the annual Oracle Bloggers meetup at Openworld, but if you qualify they’d like you to sign up.

Temporary Tables

After the success of the last Oracle/SQL Server discussion, James Murtagh of Redgate has arranged another online discussion – this time about the different ways in which temporary tables are implemented and used. As before I’ll be doing the Oracle bit and Grant Fritchey will be doing the SQL Server bit.

Update: Now that the event is over, you can listen to the recording at this URL.

WordPress 3.4.2 Released…

WordPress 3.4.2 has been released. You can see the bug fixes in the changelog and download from the usual place.

Happy upgrading. :)



Oracle OpenWorld 2012 – Bloggers Meetup

Oracle OpenWorld Bloggers Meetup Oracle OpenWorld 2012 is just over a month away, and yes, we are organizing the Annual Oracle Bloggers Meetup — one of your top favorite events of OpenWorld.

What: Oracle Bloggers Meetup 2012

When: Wed, 3-Oct-2012, 5:30pm

Null – again

Here’s a (camouflaged) constraint definition I came across a little while ago in a production system:

create table t1 (
	v1 varchar2(10),
	constraint c1 check (v1 = 'A' or v1 = null)

Quick question – will the following insert statement work or return an error ?

insert into t1 values('B');

The answer is that the row gets inserted – and that’s probably not an intended result.

It’s amazing how often NULL rears its ugly head as the cause of unexpected behaviour. Remember that a constraint accepts a value if the constraint does not evaluate to false. If you put ‘B’ into the constraint definition above, we get:

       'B' = 'A' or 'B' = null
hence   FALSE or NULL
hence   NULL

Oracle Security Search Is Annoying and protecting PL/SQL code

This post if not specifically about Oracle Security but I got here because of Oracle security so i am going to talk about Oracle security first...:-) I am working this morning on a proof of concept code for a security....[Read More]

Posted by Pete On 06/09/12 At 11:38 AM

Oracles Java Patch

OK, its not Oracle database security but its big news and it is from Oracle. Oracle have recently released an out of band Java security patch which supposedly fixed serious security flaws; then a few days ago the guys at....[Read More]

Posted by Pete On 05/09/12 At 12:11 PM

Dinsdag 18 september: Oracle Open World & JavaOne 2012 Preview mini-conferenties – 12 presentaties op 1 avond

Van 30 september tot 5 oktober is San Francisco weer het domein van tegen de 45.000 deelnemers aan de Oracle Open World en JavaOne conferenties. Ruim 2000 presentaties worden daar gehouden, in vele tientallen zalen in hotels en het Moscone Conferentie Center in downtown San Francisco, waaronder pakweg 20 door Nederlandse sprekers. Hoewel honderden Nederlandse

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