Do you work in I.T?

If you do, then you know that only 20% of your I.T work is spent at the office. And no, I’m not talking about telecommuting or working remotely here. I’m talking about the 80% of our time we spend handling all those I.T calls from friends and family Smile

So I was motivated to put together this little ode – dedicated to all of us that have to go the extra mile to keep (more...)

Cloning a schema with one line

In the world of DevOps, continuous integration and repeatable test cases, the demand for being able to

  • quickly build a suite of database objects,
  • utilise it for a series of tests,
  • then throw the objects away

has become far more common. This is one of the many great use cases for pluggable databases with all of the powerful cloning facilities available. In particular, now that you can take advantage of pluggable databases without* incurring additional (more...)

DML error logging redux

I posted a nice little feature of DML error logging recently, and a comment came in mentioned that caution is needed with DML error logging because the errors are logged persistently. Hence if you ran a load multiple times, or multiple sessions were utilizing the facility, then the error logging table can quickly become a soup of data that cannot be tracked back to the code your own session was running.

By default this is (more...)

The holistic SQL tuning series

I did a set of articles for Oracle Magazine on a more holistic view of SQL tuning. What do I mean by “holistic”? It was a reflection of a common problem that I see when questions come into AskTOM, or when people in the community approach me at conferences, namely, there is an inclination to dive straight into the deepest levels of the tuning exercise:

  • “What index should I create?”
  • “Should I increase the (more...)

The definition of proof

One of the pieces of advice that I often see on the ‘net is that undo space is somehow this incredibly precious thing, and as a consequence, one should always keep the amount of uncommitted changes in the database to a small size.

Personally I think that is baloney (Ed-in reality, as an Australian I have a slightly more powerful choice of term, but lets keep things PG-rated 🙂). But when I recently challenged (more...)

A refreshing look at PIVOT

We had an AskTOM question come in recently where our customer was very excited about the PIVOT operator in SQL which lets you transpose rows to columns. This is a very common requirement in applications that want to take data that has been modelled in “pure” relational form, and present in a more “human-digestible” form. There are plenty of posts and examples out there about PIVOT, but if you haven’t seen one, here’s a trivial (more...)

All the OpenWorld 2019 downloads!

Why dig around for hours in the catalog? Here are all of the downloads registered in the OpenWorld catalog!

You can pick and choose from the list below, or if you want a CURL script that will download the entire set, you can find that here. Enjoy!

BOF1167 Java on Azure BOF,Reza Rahman

BOF1321 Why You Should Be Coding with the NetBeans IDE,Mark Stephens

BOF1336 How to Improve the Quality of Your Application (I Wish (more...)

Then OpenWorld mega-list

You’ve been to OpenWorld…

You’ve seen the great content…

Networked with the community…

But now you want to keep the ball rolling and catch up with the speakers on twitter.

So here is the mega-twitter list…all the speakers from OpenWorld and CodeOne that provided their twitter handles at registration. Enjoy!

Abhinav Shroff https://twitter.com/abhinavshroff
Ahmad Gohar https://twitter.com/ansgohar
aimee pi https://twitter.com/aimeepi
Akshaya Kapoor https://twitter.com/Akshaya_Kapoor
Alan Williams https://twitter.com/alandbsec
Alasdair Nottingham https://twitter.com/Nottycode
ALBERTO (more...)

Speaker info for Perth, Australia

I have just got back from the Groundbreakers Latin America tour, and the travelling was made so much easier with the information provided by the organizers. So with the APAC tour coming up, I felt duty bound to give some hopefully useful information about my home town in Perth.

Flying in/out

There are two airport terminals in Perth. In times gone by, these were known as the Domestic and International terminals because, as the names (more...)

Extending in-lists

blah blah great for static values, but what about wild cards


SQL> create table t ( x varchar2(50));

Table created.

SQL> insert into t values ('stringasd');

1 row created.

SQL> insert into t values ('blah');

1 row created.

SQL> insert into t values ('more data');

1 row created.

SQL> insert into t values ('blah blah');

1 row created.

SQL> insert into t values ('some stuff with qwe in it');

1 row created.

SQL> insert into  (more...)