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August 2015

RAM is the new disk – and how to measure its performance – Part 1 – Introduction

Submitted by tanelpoder on Sun, 2015-08-09 23:26

[ part 1 | part 2 | part 3 ]

RAM is the new disk, at least in the In-Memory computing world.

No, I am not talking about Flash here, but Random Access Memory – RAM as in SDRAM. I’m by far not the first one to say it. Jim Gray wrote this in 2006: “Tape is dead, disk is tape, flash is disk, RAM locality is king” (presentation)

RAM is the new disk – and how to measure its performance – Part 1 – Introduction

Submitted by tanelpoder on Sun, 2015-08-09 23:26

[ part 1 | part 2 | part 3 ]

RAM is the new disk, at least in the In-Memory computing world.

No, I am not talking about Flash here, but Random Access Memory – RAM as in SDRAM. I’m by far not the first one to say it. Jim Gray wrote this in 2006: “Tape is dead, disk is tape, flash is disk, RAM locality is king” (presentation)

OTN Tour of Latin America 2015 : CLOUG, Chile – Day -1

Submitted by oraclebase on Sun, 2015-08-09 23:07

We were due to leave the hotel in Sau Paulo at 04:45 today, so I was planning to get up at around 04:00. Instead, I woke up at 03:00 and couldn’t sleep. I think I was a little nervous about missing the flight.

The journey to the airport didn’t present any major dramas at that time. There was a little mixup with the size of the taxi, so we had to travel in two cars, but that was fine. Debra and I travelled with David Peake, who was leaving us at the airport to fly to Brasilia for an APEX conference. Francisco and his son were in a separate care.

OTN Tour of Latin America 2015 : GUOB, Brazil – Day 1

Submitted by oraclebase on Sun, 2015-08-09 01:27

I woke up pretty early again, spent a bit of time working, then headed down to meet the wife at breakfast. I was gabbing away, when she mentioned it was time to register. I had a mad dash to get back to the room, shower and head down to the GUOB event. Thankfully, I am stopping in the conference hotel.

This was a three track event, so I tried to get to sessions that I hadn’t seen at other events.

OTN LA Tour 2015 Presentations

Submitted by Kerry Osborne on Sat, 2015-08-08 13:48

Here are links to the presentations for the OTN Latin America Tour 2015.

Controlling Execution Plans (without touching the code)

In-Memory In Action (slides by Tanel Poder) </p /> </a></h3></blockquote></div> <div class=

Scripts from Today’s Family Coding and Hands on Lab Fix

Submitted by dbakevlar on Fri, 2015-08-07 23:57

RMOUG’s Quarterly education workshop was a great event today and I appreciate everyone who came out and those who spent time with their family and their user community doing fun geeky stuff.

OTN Tour of Latin America 2015 : GUOB, Brazil – Day -1

Submitted by oraclebase on Fri, 2015-08-07 20:22

As I mentioned in the previous post, I got to bed at the hotel in Sau Paulo at about 03:00. I woke up at about 07:00 and did some work for a couple of hours before hitting breakfast with the wife. At breakfast we were joined by Francisco and his son. :)

CBO catchup

Submitted by Jonathan Lewis on Fri, 2015-08-07 12:10

It’s interesting to watch the CBO evolving and see how an enhancement in one piece of code doesn’t necessarily echo through to all the other places it seems to fit. Here’s an example of an enhancement that spoiled (or, rather, made slightly more complicated) a little demonstration I had been running for about the last 15  years  – but (in a fashion akin to another partitioning limitation) doesn’t always work in exactly the way you might expect.

OTN Tour of Latin America 2015 : AROUG, Argentina – Day 2

Submitted by oraclebase on Thu, 2015-08-06 19:26

I mentioned in the previous post we were spending the day sightseeing today. Last time I was in Buenos Aires I did a bus tour. You can see some of the photos here.

OTN Tour of Latin America 2015 : AROUG, Argentina – Day 1

Submitted by oraclebase on Thu, 2015-08-06 12:39

I woke up far too early and spent a few hours on the computer.

A number of folks on the tour have built up so many Hilton Honours points they get access to the executive lounge, so I was signed in as a scummy guest and I got breakfast for free. :)

At about 09:00 we walked across to the AROUG event, which had the following order of events.