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March 2017

Apex patch for 5.1

If you are running Application Express, there is a new patch available.  Lots of fixes which you can read about here

http://www.oracle.com/technetwork/developer-tools/apex/application-express/apex-511-patch-set-notes-3661846.html

I just downloaded patch 25341386 and followed the installation instructions and it went through with no problems at all in just a few minutes.

Index out of range

I’ve waxed lyrical in the past about creating suitable column group statistics whenever you drop an index because even when the optimizer doesn’t use an index in its execution path it might have used the number of distinct keys of the index (user_indexes.distinct_keys) in its estimates of cardinality.

12.2 Online Conversion of a Non-Partitioned Table to a Partitioned Table (A Small Plot Of Land)

In my previous post, I discussed how you can now move heap tables online with Oracle Database 12.2 and how this can be very beneficial in helping to address issues with the Clustering Factor of key indexes. A problem with this technique is that is requires the entire table to be effectively reorganised when most of […]

Oak Table World, Collaborate 2017 Edition!

 

We weren't sure we'd get Oak Table World for Collaborate going, but Bryn made sure that it happened, (better thank him when you see him!)   We'll be in the South Seas C Ballroom all day Wednesday, so come learn database knowledge that everyone else is too frightened to talk about!

Submit your business card in the bowl at the front door and get a chance to win an AWESOME Nintendo NES Classic System with 30 games!

Managing Inbound Traffic on an AWS Instance

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Announcing Trivadis Performance Days 2017

Trivadis Performance Days 2017

It is a great pleasure to announce the next Performance Days! This year the event will take place the 13-14 September in Zurich.

Given that detailed information about the event as well as online subscription are available at https://trivadis.com/performance-days-2017, in this short post I limit myself to thanking and pointing out who the speakers that accepted my invitation are:

Can You Say That An Oracle Database is nn% secure?

I often get this type of question from customers and also from people I speak to and even a few times by email. The question is "can you tell us how secure our database is?", is it 10% secure, is....[Read More]

Posted by Pete On 23/03/17 At 03:22 PM

min/max Upgrade

A question came up on the OTN database forum a little while ago about a very simple query that was taking different execution paths on two databases with the same table and index definitions and similar data. In one database the plan used the “index full scan (min/max)” operation while the other database used a brute force “index fast full scan” operation.

PFCLScan - A Security Scanner For Oracle Databases - New Website

Our software product PFCLScan can be used to assess your Oracle databases for security issues that could make your data vulnerable to loss or attack. PFCLScan initially had its own website, PFCLScan.com but since the restyle and redesign of our....[Read More]

Posted by Pete On 22/03/17 At 08:24 PM

Iceland is Awesome….and Colder than Utah

I ended up speaking at two events this last week.  Now if timezones and flights weren’t enough to confuse someone, I was speaking at both an Oracle AND a SQL Server event- yeah, that’s how I roll these days.