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June 2018

Remote syslog from Linux and Solaris

Auditing operations with Oracle Database is very easy. The default configuration, where SYSDBA operations go to ‘audit_file_dest’ (the ‘adump’ directory) and other operations go to the database may be sufficient to log what is done but is definitely not a correct security audit method as both destinations can have their audit trail deleted by the DBA. If you want to secure your environment by auditing the most privileged accounts, you need to send the audit trail to another server.

The death of UTL_FILE

In a previous post I covered a technique to improve the performance of UTL_FILE, but concluded the post with a teaser: “you probably don’t need to use UTL_FILE ever again”.

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Time for me to back that statement up with some concrete evidence.

UTL_FILE can read and write files. This blog post will cover the writing functionality of UTL_FILE and why I think you probably don’t need UTL_FILE for this. I’ll come back to UTL_FILE to read files in a future post.

When WHEN went faster

Yeah…try saying that blog post title 10 times in a row as fast as you can Smile

But since we’re talking about doing things fast, this is just a quick post about a conversation I had a twitter yesterday about the WHEN clause in a trigger.

 

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That is an easy benchmark to whip up – I just need a couple of tables, each with a simple a trigger differing only by their usage of the WHEN clause.  Here is my setup:

Power BI and the Speed(ier) Desktop

I can be an extremely impatient person about anything I think should be faster.

Juicing up UTL_FILE

Think about your rubbish bin for a second. Because, clearly this is going to be an oh so obvious metaphor leading into UTL_FILE right?  OK, maybe a little explanation is needed. I have a basket next to my desk into which I throw any waste paper. It is where I throw my stupid ideas and broken dreams Smile

ADWC new OCI interface

A few things have changed about the Autonomous Data Warehouse Cloud service recently. And I’ve found the communication not so clear, so here is a short post about what I had to do to start the service again. The service has always been on the OCI data centers but was managed with the classic management interface. It has been recently migrated to the new interface:
CaptureADWCnew
Note that ADWC here is the name I’ve given for my service. It seems that the Autonomous Data Warehouse Cloud Service is now referred by the ADW acronym.

The Priority 600 Pinion Gearbox Bike

My friends at Priority Bicycles have released a new model bicycle with a German-made gearbox that is sealed against the elements and is centered on the bike for optimal weight distribution. While it's the gearbox that is the marquee feature on this new bike, it is the wide tires that fire my soul. I want to share where those tires can take you.

The simplest things….can be risky

Java and Oracle expert Lukas Eder tweeted yesterday about a potential optimization that could be done when reviewing database SQL code.

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Oracle Can Generate 6 Password Hashes When a User is Added or Password Changed in 12.1.0.2 and Above

In a 12.2.0.2 database it's possible that Oracle generates 6 different password hashes for one password for one user under certain circumstances when a password is changed or created (user is created). I will layout the 6 different ones first....[Read More]

Posted by Pete On 13/06/18 At 09:02 PM

#Exasol’s annual conference in Berlin #XP18

We have had our annual conference Xperience in Berlin again – it was an amazing event with a packed agenda full of customer success stories and technical news. This year at the Umspannwerk.