December 2014

UKOUG post conference geek update part 1 – ACFS for Oracle databases

One of the many interesting things I heard at the conference this time around was that Oracle’s future direction includes the use of database files on ACFS. When ACFS came out this was strictly ruled out, but has been possible for a little while now, I believe with 12.1.0.1.0. With the Oracle Database Appliance (ODA) using this deployment option and hearing about it at the conference, a little further investigation was in order. During one of the presentation @OracleRACPM Markus Michalewicz had a reference to a script that I didn’t know on his slides. The script is called gDBClone, and I wanted to see how it works. The idea is that the script can be used to create a snap-clone of a database if the source is on ACFS and in archivelog mode.

As it turned out there were a few hurdles along the way and I will point them out so you don’t run into the same issues.

push_pred – evolution

Here’s a query (with a few hints to control how I want Oracle to run it) that demonstrates the difficulty of trying to solve problems by hinting (and the need to make sure you know where all your hinted code is):

How Do I Know I Have The Latest SLOB Kit?

This is a quick blog post to show SLOB users how to determine whether they are using the latest SLOB kit. If you visit kevinclosson.net/slob you’ll see the webpage I captured in the following screenshot.

Once on the SLOB Resources page you can simply hover over the “SLOB 2.2 (Click here)” hyperlink and the bottom of your browser will show the full name of the tar archive. Alternatively you can use md5sum(1) on Linux (or md5 on Mac) to get the checksum of the tar archive you have and compare it to the md5sum I put on the web page (see the arrow).

 

latest-slob

Impressions from #ukoug_tech14

ACC Liverpool

The Oracle circus went to Liverpool this year for the annual conference of the UK Oracle User Group and it was a fantastic event there! Top speakers and a very knowledgeable audience too, I was really impressed by the quality we have experienced. Together with my friends and colleagues Iloon and Joel, I was waving the flag for Oracle University again – and it was really fun to do so :-)

Review of Synology DS415+, How to Add Memory to the DS415+, Web Pages Not Databases

December 19, 2014 As frequent readers of this blog likely know, I have not posted very many articles recently.  It seems that lately I struggle to find time to post interesting items to the blog, which is mostly focused on Oracle Database notes, so this is a three in one off-topic post.  I have been busy […]

Oracle University Expert Summit 2015 in Dubai

Oracle University Expert Summit Dubai 2015

Together with Craig Shallahamer, Lucas Jellema, Mark Rittman, Martin Bach, Pete Finnigan and Tim Fox, I will be presenting in Dubai. My topic is Minimizing Downtime with Rolling Upgrade using Data Guard

Click on the picture for details, please!

Hope to see you there :-)

Day 2 of UKOUG Tech 14

Day 2 of the UKOUG Tech 14 conference for me started with the second session (I spent the first session typing up the blog post on Day 1 as there wasn’t a presentation I was interested in). Tammy Bednar was presenting on “Creating a Test / Dev Database in Minutes Using the Oracle Database Appliance”. Tammy is another old timer at Oracle. Like myself and Maria Colgan, she has been an Oracle employee for 20 years. I’d been discussing with Maria on day 1 that people either seem to move on from Oracle within a couple of years, or they stick around for a long time like us. For me, that’s because I’ve been able to move around and do different things that have kept my interest levels fresh.

Parse Time

Here’s a little query I wrote some time ago to see where my time went while running a query. It’s nothing sophisticated, just one of those simple things you can do with v$active_session_history (or dba_hist_active_sess_history, if you don’t get to the crime scene in time).

UKOUG Tech14 slides – Exadata Security Best Practices

I think 2 years is long enough to wait between posts!

Today I delivered a session about Oracle Exadata Database Machine Best Practices and promised to post the slides for it (though no one asked about them :). I’ve also posted them to the Tech14 agenda as well.

Direct download: UKOUG Tech14 Exadata Security slides

Day 1 of UKOUG Tech 14

Monday was the first day of the main part of the UKOUG Tech 14 conference, after SuperSunday’s additional content. I had a great night’s sleep and woke at 7 am, much to the disgust of Richard Foote who had been up for four hours already and didn’t seem to appreciate my #NoJetLagHere hashtag replying to his lack of sleep tweet. :) I managed to get to the conference relatively dry, but realized yet again that you don’t come to Liverpool in December for the weather. :)