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Friday Philosophy – When Tech Fails to Deliver, is it Always a Problem?

I nipped out to the local supermarket this lunch time to get stuff. I use one of those self-use barcode scanners to log all the goods I put in my basket (apart from the bottle of whisky I was stealing). I then go to the payment machine, scan the “finish shopping” barcode and try to pay. I can’t pay.

Why oh Why Do We Still Not Have a Fast Bulk “SQL*Unloader” Facility?

Way back in 2004 I was working at the UK side of the Human Genome project. We were creating a massive store of DNA sequences in an Oracle database (this was one of two world-wide available stores of this information, for free & open use by anyone {* see note!}). The database was, for back then, enormous at 5-6TB. And we knew it would approx double every 12 months (and it did, it was 28TB when I had to migrate it to Oracle 10 in 2006, over 40TB 6 months later and grew to half a petabyte before it was moved to another organisation). And were contemplating storing similar massive volumes in Oracle – Protein, RNA and other sequence stores, huge numbers of cytological images (sorry, microscope slides).

Friday Philosophy: Be A Hero – OR Be The Best

There is a crisis! The database is not responding, the apps can’t work and the business is suffering. Management are doing what management are there for – panicking and demanding “Someone Do Something!!!”.

Step forward a DBA who logs into the server, checks the alert logs, spots what is wrong and fixes it. The database starts processing requests, the applications are all working fine and the business is back on track. What a hero!

Friday Philosophy – The Singular Stupidity of the Sole Solution

I don’t like the ‘C’ word, it’s offensive to some people and gets used way too much. I mean “cloud” of course. Across all of I.T. it’s the current big trend that every PR department seems to feel the need to trump about and it’s what all Marketing people are trying to sell us. I’m not just talking Oracle here either, read any computing, technical or scientific magazine and there are the usual adds by big I.T. companies like IBM and they are all pushing clouds (and the best way to push a cloud is with hot air). And we’ve been here before so many times. It’s not so much the current technical trend that is the problem, it is the obsession with the one architecture as the solution to fit all requirements that is damaging.

Friday Philosophy – If Only I Was As Good a Programmer As I Thought I Was Aged 22

I saw a tweet that made me smile a few days ago:

programmer quote

Like many of you, I started out my working life in IT as a computer programmer. Like some of you, I still am a computer programmer from time to time. I don’t think I’ve had a year of my working life when I did not do either some application development programming or some database infrastructure programming. I am constantly writing small (or not so small) SQL or PL/SQL programs to do what I do in Oracle.

Friday Philosophy – Database Dinosaurs

I’m guessing many of you reading this are over 40. I know some of you are actually beyond the half century and a couple of you are….older! If you are younger than 40, just print out this and put it in an envelope marked “read a decade later than {current date}”. It will have become relevant for you by then…

beware the network admin

Beware the network admin – creative commons, Elvinds

Pragma UDF – Some Current Limitations

There are currently some limitations to when pragma UDF will speed up your calls to PL/SQL functions from SQL.

In my post introducing the new pragma UDF feature of Oracle 12c I explained how it can be used to reduce the impact of context switching when you call a PL/SQL function from SQL.

In my example I showed how running a SQL-only SELECT statement that formatted a name for display over 100,000 records took 0.03 seconds went up to 0.33 seconds when the formatting SQL was put in a user defined PL/SQL function. This impact on performance is a shame as it is so beneficial to encapsulate business logic in one single place with PL/SQL. Stating that the PL/SQL function is a user defined one with the pragma UDF option reduced the run time to 0.08 seconds – which is removing most of the context switching overhead. Check out the prior post for full details.

The “as a Service” paradigm.

For the last few days I have been at Oracle Open World 2015 (OOW15) learning about the future plans and directions for Oracle. I’ve come to a striking realisation, which I will reveal at the end.

The message being pressed forward very hard is that of compute services being provided “As A Service”. This now takes three flavours:

Friday Philosophy – The Issue of Exceptions in your Mailing Lists

A couple of days ago I got the below email about the next UKOUG Database Server SIG being full. That’s great to see! A full user group meeting. If I still wanted to attend, I could be added to the waiting list:

ScreenHunter_42 Sep. 14 11.25

It made me smile as, guess what, I was already due to be there. I was the last speaker on the agenda! It was going to be awkward if I failed to get from the waiting list to an actual place at the event, it could be a very quiet session…

Friday Philosophy – Building for the Future

I started my Oracle working life as a builder – a Forms & Reports Builder (briefly on SQL*Forms V2.3 but thankfully within a month or two we moved up to SQL*Forms V3, SQL*reportwriter V1.1 and SQL*Menu 5 – who remembers SQL*Menu?). Why were we called Builders? I guess as you could get a long way with those tools by drawing screens, utilising the (pretty much new) RI in the underlying Oracle V7 to enforce simple business rules and adding very simple triggers – theoretically not writing much in the way of code. It was deemed to be more like constructing stuff out of bits I guess. But SQL*Forms V3 had PL/SQL V1 built in and on that project we used it a *lot*.