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Friday Philosophy – Is Dave Working? October 17, 2014

Posted by mwidlake in Friday Philosophy, humour, Perceptions.
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17 comments

Is Dave across the desk from you working at the moment? Or is he goofing off? You can’t see his screen but I reckon you can make a fair stab at what he is up to, without recourse to any sort of IT monitoring systems at all. How?

How fast is Dave typing?

If Dave is typing fast, he is almost certainly not working. He’s goofing. There are very few things you can do when you work in IT where you type fast – and especially not type fast for more than a few seconds. If Dave is typing fast he is almost certainly emailing a mate or instant-messaging Sandra in the development team. If Dave is typing fast, pausing for a few seconds and then typing fast again, he is *certainly* conversing electronically with a friend. This will be 100% corroborated if he smiles, sniggers, smirks, laughs or just glances around furtively.

Longer periods of typing (say a minute or two) and then pausing for a similar time then Dave is probably working, say documenting something or writing a work-related email {or,perhaps a blog post – *cough*} . The clinchers here that indicate work is being done are (a) he will not be smiling or showing any signs of happiness and (b) there will be bursts of “tch-tch-tch-tch-tch-tch-tch” where the delete key is being pounded to remove an offending line or block of text. {People in IT always seem to delete text by repeatedly hitting the delete key. Higher forms of life, like secretarial staff, are more likely to select the text and hit the delete key once. Or, even, the first character of what they are going to type next. Why do those of us in IT just pound the delete key?!?}.

I hope the people around me have not noticed I am less miserable than usual, else they will know I have stopped documenting and I am now blogging…

Fast key tapping but in an oddly “monotone” way (the same key or keys over and over again) and a fixed stare and maybe the odd bit of bobbing the head or ducking – Dave is playing a game. Naughty Dave. Huge amounts of mouse woggling will also be evidence of game playing. That or doing graphical database design – but who does any design work these days….?

Any periods of fast typing for more than seven seconds are a sure indicator that no coding is being done. The seven second ceiling is a scientific fact, derived from 25 years of coding and goofing off :-). I have only ever known one person who can write code fast without pauses and he was a very odd chap indeed. A very, very good programmer though.

So, if Dave is staring fixedly at the screen, typing for a few seconds (probably slowly), pausing for a minute and frowning/muttering/swearing, he’s coding. Probably. He could be Googling for a new blue-ray play or something – googling for stuff you want to buy and coding seem to have the same sort of typing pattern and even the same air of general annoyance and confusion, with the very occasional “whoop” of success.

I think you can make a pretty accurate guess about whether someone is working or goofing, and even what type of working or goofing they are doing, purely from the sound of the keys and the facial expression.

I love the “techie” bits in films where the designated nerd sits down at the keyboard and goes “tap-tap-tap-tap-tap-tap-tap-tap-tap-tap-tap-tap-tap-tap-tap-tap-tap-tap-tap” at high speed and windows of data pop up and scroll up the screen at 30 lines a second or images flash by quicker than you can follow. They never delete anything they type, no typoes occur, they never have to check the correct flag or format for a command. And they never. Ever. Ever. Use the space key.Those thumbs never clatter the big bar, the fingers just bounce up and down on the main keys as though they were playing a rather odd piano.

You check next time the techie nerd bit on a film comes up. (S)he will not use the space key at all. Even if spaces appear on the text on the screen :-)

So, any fast typing and any sign of happiness and Dave is probably goofing. Both together and he certainly is. And if you never hear the space bar rattle, Dave is in a film.

A loss from the UK User Community – Graham Gilbert July 17, 2013

Posted by mwidlake in Perceptions, Private Life, UKOUG.
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Last week, as part of organising the AIM and Database Server joint UKOUG SIG tomorrow {which I should have blogged about but just never got around to}, I was made aware of the fact that a man called Graham Gilbert died back in April.

Anyone who has anything to do with the RDBMS parts of the UK Oracle User Group probably knows Graham as he ran the RDBMS SIG for years and years and years. For the rest of you, you missed out as Graham was a Jewel. I can’t say he was a close friend, after all I was not aware he had died, but I was saddened by it – and that is unusual as I am particularly sanguine (callous?) when if comes to death. {For example, on hearing about the death of my own father, who I did actually like and get on with, my immediate and on-going response was “damn, that’s inconvenient”}.

I was saddened as Graham was one of those rare beasts – a person who helped, encouraged and supported people. Everyone who met him seems to have liked him. {If you DID meet him and not like him – I don’t want to talk to you, OK?!} In fact, when I got the first hint of Graham having died, I got in touch with some mutual friends and asked if they had heard anything. The response was a consistent “No – but let me know as Graham … (various citations about how he had encouraged, helped or been kind to them)” followed.

You can see this if you look at {and I really hope this works} this section in the UKOUG 50th Anniversary edition. I could not put better what Patrick Hurley said about Graham gently encouraging people to be part of the community.

As I have said, I did not know Graham well, but I did share a few pints with him after RDBMS SIGs on a couple of occasions. On one such occasion we were discussing the fact that he had run the RDBMS SIG for so long – I was thinking of stepping down from the SIG I was running but no one was showing signs of stepping up if I did. Graham gave a gentle sigh and observed that “many people would like to help – but the day job or the effort or a lack of confidence gets in the way. You just have to encourage them.” So why had he been the RDBMS SIG chair for so long? “Well, I would rather not, but it just seems to fall to me. It needs doing and it is not really a burden, I just don’t want to be seen as making it my empire. I can ask people to present but not take on the whole thing!”. My quotes will be inaccurate but that was the gist of it. He encouraged people to advance themselves or take part but seemed reluctant to burden anyone. I wonder now if he ended up running it for so long as he was just so damned good at it and we wanted to keep him? I bought him a pint (I nearly had to argue with him on that one) as he was being so nice to me and encouraged me to keep doing my SIG so long as punters turned up.

Graham, for me, epitomises the User Group mentality. We help one another and we do it as we want to, well, help each other. I’ve met a fair few ….arseholes… who do user group stuff for the CV or to get recognition or some other personal gain. You can quickly spot them as they want the label but do very little for it, or do loads for 6 months and then drop out the picture when they realise it is not giving them that immediate reward they wanted. I don’t like those people, it’s like people who do stuff for charity and then thrust it down your throat. They did it for themselves, not the recipient. Thankfully I know many people who do the user group stuff because they “just want to help” and many of them never present (as presenting is not their thing) or blog or crow. They just help. I must try and be more appreciative of them.

Well, Graham did his bit quietly and consistently for years and years, because he wanted to help. He helped a lot of us. A round of drinks will be bought tomorrow after the SIG in his honour. It’s the least we can do – and I mean the least.

Friday Philosophy – Level of Presentations March 8, 2013

Posted by mwidlake in Exadata, Friday Philosophy, Perceptions, Presenting.
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7 comments

This FF is a bit of a follow-up to the one I posted last week on PL/SQL skills and a comment made by Noons on how much knowledge you need to be an OakTable member.

I have a question to answer and I would appreciate other people’s opinion. Should there be more intro talks at conferences? If so, should the experts be giving them?

I am an OakTable member (and really quite worryingly proud about that) and I guess that means I know a lot about some aspects of Oracle. But also, and this is a key part of being asked to be a member of the OakTable, I both try and base my “knowledge” on scientific testing of what I think I know (be it by myself or others willing to show their workings) and I try and pass that knowledge on. I don’t think there is a member of the OT that does not abide by those two concepts.

This is not false modesty on my part, but most other people on the OT know a shed load {UK colloquialism for “really quite a lot”} more than I do about the Oracle database and how it works. Some of them are so smart I can’t but secretly dislike them for it :-). But I have a reasonable stash of knowledge in my head and I am a stong proponent of those last two factors. In particular, I want to put what I have in my head about {ohh, let’s pick partition pruning} in other people’s heads. Which is why for the last 4 years most of my presentations have run over horribly. I must get every detail into the audiences’ heads, even if they don’t want to know it!

Of late I have started to feel that I present in the wrong way. I take a subject, I write down what I know about it and I try to present that knowledge. I’ve only picked topics I feel I know well and in which I can handle almost any question the audience asks. For me to be that confident I have to have used that aspect of Oracle technology a lot and had months, if not years of experience. You cannot pass that on in 1 hour. I’ve already said I am not that smart, but I learn over time. So I started to strip out the basics and present just the clever stuff, which shows how fabulous I am. {British self-deprecating sarcasm, please}. Just like so many other experts. Hell, if we are experts, we should be talking expert stuff!!!

To balance that I think there is a gap in what is talked about at conferences. I know this is felt by some conference organisers and attendees too, but there is just way too much “impressive smart stuff” and not enough “how X works in the real world, for people who have never done it”. Not 10,000 feet up sales pitch rubbish that gives no substance, but talks on a topic where you can go from level 1 for knowledge-free beginners to level 5 for the 25 people at the conference who know this stuff inside out – and the talk stops at level 2. I’ve made a decision to try and address that gap, which is why I now offer more talks on “an intro to Exadata” and “how to get going with performance tuning” than the smart stuff.

The problem is, how many people, probably mostly young people, go to conferences? Am I wasting my time trying to offer these talks if no one going to the conferences wants them? Do people going to conferences, generally speaking, want the technical nitty-gritty or do they want the intro stuff? Yes, I know there is a spread but where is the real need? I suppose I thought of this recently when I did a talk on Index Organized Tables and almost everyone in the room already used them. Then, a few hours later, I did an intro to database design. Almost everyone in the room was a seasoned database designer… I doubt I said much of real value to either audience.

That leaves my last point about should the experts do intro talks? A problem with experts doing intro talks is the expert knows it all. It can be hard to remember what you really needed to know at the start (and also, my own problem, knowing what to drop out the talk as, really, it is “being smart as an ego-trip” that the new people can do without). But if you are not an expert, can you handle the What If questions? I have played with this issue with my Intro to Exadata talk. I wrote the draft when I had very little real experience and I have only modified it as I gained more experience. I’m glad I did as when I revisited the presentation recently I started putting loads of stuff in that only makes sense when you are used to it’s peculiarities. Thankfully, I realised this and stripped most of it out again. So well, in fact, that one person who wrote about the talk said “it was nice to see someone talk about it who was an Oracle expert who obviously knew little about the topic”. Well, something like that :-)

Enough. I would appreciate other people’s opinions and experiences on this.

Friday Philosophy: It’s Not What you Know – It’s What you are Getting To Know. December 7, 2012

Posted by mwidlake in Friday Philosophy, Meeting notes, Perceptions.
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This has been a good but tiring week. It started with the UKOUG TEBS conference where I saw lots of people I know, a few who I didn’t but now do and I had good times in pubs and restaurants. One evening culminated in my singing part of “Two out of Three ain’t bad” in the style of a munchkin with Nial Litchfield in a pub at 1am, which I am sure he woud rather forget about – so if you know him, ask him about it. For me that was the indicator to go lie down in the dark and sleep. Irrespectve of drunken singing, I must had talked about 20 topics with 40 people over the conference, exchanging ideas, tricks and war stories.

I also presented on the Sunday, teaching people. I went to many fine presentations through the week and learnt stuff, balancing the knowledge books. This included one talk on Wednesday where I found out I had been teaching people wrong on Sunday! *sigh* Oh dear. And it is something I have been getting wrong for years. I’ll check the fine detail before I blog about that though. I now hate SQL Maria for pointing out my error – which is unfair but that’s life. Sorry Maria, I’ll buy you a beer sometime to make up for it.

After all that, I came back to work to find we had some big issues with one system. I won’t go into the details but there were half a dozen of us working on it, coming up with ideas, knocking each other’s suggestions down or agreeing with them – and coming up with working solutions. None of us could have done it alone and I reckon most of us learnt a couple of things in the process (such as how bad some of the app design was :-) ).

So all in all, a week of learning that has worn me out but left me happy and that is what I like about my work life at present. I am working with people who know stuff and who want to know stuff. I am in a role that exposes me to a lot of issues. I am working for a boss (and team) who let me take time out from the official job to learn stuff too. I suspect it is going to end soon though as the company I am working for are taking large numbers of people to the carpark and shooting them (figuratively speaking only, I should point out). It will be a shame if it does end. But then, just as when I worked with the best IT person I ever worked with, I’ll be happy I had the experience.

Yes, I know I am lucky to have such a good working life at present {but, you know something? I did take efforts to make it like this – maybe a future FF on that}.

So having said I like my working life so much, who is willing to bet I’ll be complaining like a spoilt child all next week?!?

Friday Philosophy – The Tech to Do What You Need Probably Exists Already November 30, 2012

Posted by mwidlake in Friday Philosophy, Perceptions.
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4 comments

How many of you have read the Oracle Concepts manual for the main version you are working on?

This is a question I ask quite often when I present and over the last 10 years the percentage number of hands raised has dropped. It was always less than 50%, it’s been dropping to more like 1 in 10 and Last year (at the UKOUG 2011 conference) was the nadir when not a single hand was raised. {Interestingly I asked this at the Slovenian User Group 3 months ago and something like 40% raised their hand – impressive!}.

Why do I feel this is important? Well, do you know all the technology solutions available across just the core RDBMS with no cost options?. No, you don’t, you (and I) really don’t. If you read the concepts manual, even just skimming it, you will be reminded of a whole load of stuff you have only dim memories of and perhaps you will even see some features that passed you by when they were first introduced.

Of course, you would need to read a few more manuals to get the full picture, such as the PL/SQL Packages and Types References, as so much good stuff is introduced via built-in packages, and the SQL Language Reference, as SQL has been extended quite a lot over the last couple of versions. Dull reading indeed but I’d estimate that if you read those three you would be aware of 90%+ of the Oracle technologies that are available to you out-of-the-box and considerably more than all but a handful of Oracle Experts. You’d know more than I as (a) I have not skimmed the PL/SQL one for years and (b) I have a rotten memory.

My point it, you can’t consider using Oracle technologies you don’t know about or remember – and they could be just what you need to fix the problem you see in front of you.

I’ll give a couple of examples.

Problem, physical IO is too high, your storage system is bottle-necked.
Answers, Reducing Physical IO:
-First up, Index Organized tables. Some of you will be aware that I am very keen on IOTs and the reason I am is that I’ve used them to physically group data that the application needed to select over and over again. It can make a massive improvement to that sort of system. They are rarely used.
-Clustered Tables. Even less used, in fact has anyone reading this used them in anger in the last 10 years? Great for situations where you need parent-children or parent-children-type-1+parent-children-type-2 data. I confess, I have not used them in anger for years.
-Move table (and order them as you do it!) and re-build indexes to remove “dead” space. This one got a bad name, especially the index rebuilds, as people were doing it needlessly without appreciating what the intention was, but now I hardly ever see it done – even when it is of benefit.
-Compress your tables and indexes. With normal Oracle compress (no need for HCC). In tests I’ve done I pretty much always see a drop in physical IO and run time. Being candid, I can’t remember doing any tests and NOT seeing an improvement but I usually only test when I expect and improvement and I don’t want to give anyone the impression it will always help.

All the above were available in Oracle 7 or 8 and all have improved over the versions.

Problem, you want to carry out some long,complex data processing in PL/SQL and if a step fails, be able to handle it and carry on.
Answers:
– Savepoints. You can rollback to a savepoint, not just to the last commit. In this way you can break the task into chunks and, if something towards the end fails, you roll back one step (or several, your choice) and call an alternative routine to handle the exception.
– Autonomous Transactions. You want to record that an error occurred but not fail the original action or not save anything it has done to date. An autonomous transaction runs in it’s own sub-session and commits in it do not effect the calling session.
– Temporary Tables. You can put your working information in them as you progress and if you need to bomb out (or some evil DBA kills your session for running too long) the temp table contents just disappear. No clean up needed.

Maybe the above is not so fair, I have not been a proper PL/SQL developer for a while now, but I hardly see the above used. Especially Savepoints. I can’t remember not having savepoints available (hmm, maybe Oracle 6) and Autonomous Transactions and Temporary tables are Oracle 8 (I thought Temporary tables might be 9 but Tim Hall’s OracleBase says 8)

Another thing I have noticed over the years is that so often I will read up on some oracle feature I know little about, only for it to come up in the next few weeks! There is a psychological aspect to this, that we only remember these “coincidences” and not the more common situations where we read up on something which does not subsequently come up before we forget about it, but I think that it is also that we tend to use only a few solutions to solve the problems we see and adding another solution to our list means the chances are high it will be suitable for something soon.

OK, so it would help us all to read the manuals (or other Oracle technical books) more. Now the big problem is finding the time.

Friday Philosophy – The Importance of Context November 23, 2012

Posted by mwidlake in Friday Philosophy, Perceptions.
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1 comment so far

A couple of weeks ago I was making my way through the office. As I came towards the end of the large, open-plan room I became aware that there was someone following behind me so, on passing through the door I held it briefly for the person behind me {there was no where else they could be going}, turned left and through the next door – and again held it and this time looked behind me to see if the person was still going the same way as I. The lady behind gave me the strangest look.

The strange look was reasonable – the door I’d just held for her was the one into the gentleman’s bathroom. *sigh*

I was doing the correct thing, I was attempting to be helpful to a fellow person, I was in fact being very polite. But because I had utterly failed to consider the context, there is now a lady who works on the same floor as I who considers me, at best, as strange. At worst she thinks I am very strange – and more than a little creepy. I fear the latter given her reaction when she saw me in the kitchen area recently and turned around. {By the way, if anyone can think of a good way I can clear this up I’d appreciate it. After all, I can’t exactly go up to her and say “sorry about holding the door to the gents for you the other day, I did not realise you were a woman”}.

My point is that you can do what you believe is the right thing but, because you are not thinking of the context or are unaware of the full situation, you end up giving utterly the wrong impression. I had a work situation like this a while back.

Without going into too much detail, I was working with a client on a data warehouse project. The Oracle database bulk-processed large quantities of data, did classic big-data queries and was sitting on some fairly expensive hardware with dedicated storage and the intention of implementing Dataguard. One of the issues they had was with a subsidiary part of the system that created a very large number of small transactions, lots of updates. High volume OLTP on a DW setup. It was hammering the storage and eating up all the available IO. The data for this subsidiary system was transient, no need to protect it.
I realised that the hardware was not correct for this subsidiary system and it needed no archived redo. Archiving redo is an all or nothing situation for an Oracle instance. So happy that I had worked out what to do I proposed {with a smile} moving the subsidiary system to it’s own database on it’s own hardware.
When I said this to the client, their response was a stony look and the comment “We’ve just spent a fortune on this platform……”. Having dug my hole I proceeded to jump right in there “It’s OK, what I am proposing is only about 5, 7 thousand pounds of kit – nothing compared to what you spent already!”. The client now got very, very annoyed indeed.

You see, the context is that they had been sold a system that was very expensive – it was to do a demanding job. They had been getting poor performance with the system and that is partly why I was there. They also did not really understand the technical nuances well (at least, not the chaps I was talking to) and they did not appreciate why I said what I did. From their perspective, this smiling loon was suggesting that a system costing 2-3% of what they had spent on their data warehouse platform was going to be able to do the processing that the expensive system could not. Either they had spent waaay too much, this new “expert” was an idiot or else I was lying to them. And they did not like any of those options.

Looking back it is clear I should have been more aware of how they would receive what I said. I’ve done this before {several times}, bounded into a situation like a wide-eyed puppy and gone “Look! We can just do that!” without considering things like upsetting the guy who had suggested the original solution, or making the on-site expert look stupid or blowing away a salesman’s pitch. Or that I have missed a glaring and valid reason why they can’t “just do that”.

I suspect that a few people would say “no, you just tell them the way it is and if they don’t like it or you upset someone then tough”. Well, maybe, but not if you want to be there to help fix the next problem. Also, I know I am not great at appreciating the context sometimes. That is part of why I will never run a company or be a senior manager, I lack the skills to judge the impact of what I propose or say sometimes, in my rush to be helpful. I am slowly learning to just hold back on ideas though and to run things past friends or colleagues with more “whole picture” skills first though. I might be rubbish at it but I can learn I am rubbish at it.

In the case of the situation above, the expensive system was correct for what they wanted to do – and maybe not quite expensive enough. I was suggesting a slightly unusual fix for a specific problem and I should have been more laboured in explaining the problem and more circumspect in leading them to the solution. I should have taken more time.

I should have checked who was following me and where I was going before I held the door open.

Friday Philosophy – New Game: Phone Zombies! (You Too can Play) August 17, 2012

Posted by mwidlake in Friday Philosophy, humour, off-topic, Perceptions.
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8 comments

I’m spending a lot more time in Central London at the moment due to current work commitments. A few weeks ago I was having a quiet stroll through the streets and had what I can only describe as an odd moment:

I looked around and found I was being converged upon by 5 or 6 people walking slowly and aimlessly towards me – all from different angles, all only vaguely aware of their surroundings, all looking like they were making straight for me. I instantly thought of one of the scenes from “Shaun of the Dead” {A cracking film, go hire it tonight}.

They were all on their smart phones of course, intent on the little glowing screens of whatever it was they could not drag their eyes from – despite them also trying to navigate a busy city landscape. As some of you know, I have a bit of a “hate-mild dislike-grudging acceptance” relationships with Smart Phones.

I was so struck by this scene that I nearly did not move in time, but finally I did step to one side as I watched them do this quite wonderful, little, shuffling-dance around each other. I think only one of them actually looked up properly, the others all did that micro-glance; frown; direction shift; re-engage-with-screen procedure that is becoming so common. As a species we must be somehow pre-designed to cope with this as none of them actually bumped into each other – but it took several micro-glance manoeuvres for some of them to make it through.

This has resulted in a new game I can’t stop playing as I make my way through London:

Phone Zombies – How many people can I see at any time who are effectively lobotomised by their personal electronic device?

I have a few rules:

  • I has to be an electronic device – phones, smart phones, crackberries, tablets, electronic books etc.
  • Real books and papers do not count.
  • They must be upright (so no sitting).
  • If they are moving they count.
  • If they are stopped in the middle of the path they count.
  • If they have put themselves in a doorway or some other sensible place they do not count.
  • Unless, even though they have done that, they are still e.g. blocking ingress and egress from the doorway.
  • A bonus point if they micro-glance manoeuvre.
  • 5 bonus points if contact is made with another person in the time I am watching.
  • 10 bonus points for contact with something inanimate {only once to date}.
  • 20 points if they go “uuurrrgggghhh” and have blood on them. {no one has got 20 bonus points yet, but I live in hope}

I think my best so far is about 14, but that is because two phone-zombies both walked into each other. Classic.

Friday Philosophy – I Am An Exadata Expert August 10, 2012

Posted by mwidlake in Exadata, Friday Philosophy, Perceptions.
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5 comments

(Can I feel the angry fuming and dagger looks coming from certain quarters now?)

I am an Exadata Expert.

I must be! – I have logged onto an Exadata quarter rack and selected sysdate from Dual.

The pity is that, from some of the email threads and conversations I have had with people over the last 12 months, this is more real-world experience than some people I have heard of who are offering consultancy services. It’s also more experience than some people I have actually met, who have extolled their knowledge of Exadata – which is based solely on the presentations by Oracle sales people looking at the data sheets from 10,000 feet up and claiming it will solve world hunger.

Heck, hang the modesty – I am actually an Exadata Guru!

This must be true as I have presented on Exadata and it was a damned fine, technical presentation based on real-world experience and I have even debated, in public, the pros and cons of point releases of exadata. Touching base with reality once more, I did an intro talk “the first 5 things you need to know about Exadata” and the “debate” was asking Julian Dyke if he had considered the impact of serial direct IO on a performane issue he had seen and he had not only done so but looked into the issue far more than I – so he was able to correct me.

But joking aside –  I really am a true consulting demi-god when it comes to Exadata

I have years of experience across a wide range of Exadata platforms. That would be 0.5 years and I’ve worked intensively on just one system and am in a team now with some people who are proper experts. So a range of two. Yes, tongue is still firmly in cheek.

This situation always happens with the latest-greatest from Oracle (and obviously all other popular computing technologies). People feel the need to claim knowledge they do not have. Sometimes it is to try and get consultancy sales or employment, sometimes it is because they don’t want to be seen to be behind the times and sometimes it is because they are just deluded. The deluded have seen some presentations, a few blog posts and maybe even got the book and read the first few chapters and are honeslty convinced in their own minds that they now know enough to make effective use of the technology, teach {or, more usually, preach} others and so proclaim on it. {See Dunning Kruger effect, the certainty of idiots}. I’m certainly not arguing against going to presentations, reading blogs and books and learning, just don’t make the mistake of thinking theoretical, second-hand knowledge equates to expert.

With Exadata this situation is made worse as the kit is expensive and much of what makes it unusual cannot be replicated on a laptop, so you cannot as an individual set up a test system and play with it. Real world experince is required. This is growing but is still limited. So the bullshit to real skills quotient remains very, very high.

If you are looking for help or expertise with Exadata, how do you spot the people with real knowledge from the vocal but uninformed? Who do you turn to? {NB don’t call me – I’m busy for 6 months and I really am not an expert – as yet}. If your knowledge to date is based on sales presentations and tidbits from the net which may or may not be based on a depth of experience, it is going to be hard to spot. When I was still without real world experience I had an unfair advantage in that I saw email threads between my fellow OakTable members and of course some of those guys and gals really are experts. But I think I was still hoodwinked by the odd individual on the web or presenting and, I can tell you, though this background knowledge really helped – when I DID work on my first exadata system, I soon realised I did not understand a lot about the subtulties and not-so-subtulties of using a system where massively improved IO was available under key conditions. I had to put a lot of time and effort and testing to move from informed idoit to informed, partially experienced semi-idiot.

I know this issue of the non-expert proclaiming their skills really frustrates some people who do know their stuff for real and it is of course very annoying if you take someone’s advice (or even hire them) only to find their advice to be poor. Let’s face it, is is simple lying at best and potentially criminal mis-selling.

I guess the only way is for peopel needing help to seek the help of someone who has already proven themselves to be honest about their skills or can demonstrate a real-world level experience and success. I would suggest the real experts should do that most difficult task of pointing out the mistakes of the false prophets, but it is very tricky to do without looking like a smartarse or coming over as a big head or jealous.

I’ll finish on one thing. Last year I said how I thought maybe I should do more blog posts about things I did not know much about, and be honest about it and explore the process of learning. I did actualy draft out about 3 posts on such a topic but never pushed them out as I was way too busy to complete them… That and, being candid, I really did not want to look like an idiot. After all, this Oracle lark is what puts beer in my hand, hat fabric on my wife’s millinary worktop and food in my cat’s bowl. The topic was….? Correct, Exadata. Maybe I should dust them off and put them out for you all to laugh at.

Friday Philosophy – The Abuse of Favours March 30, 2012

Posted by mwidlake in Friday Philosophy, humour, Perceptions, rant.
Tags: , , ,
8 comments

You probably all recognise this situation:

Dave needs something doing that he can’t do himself – let’s say it is creating an API for the file management package. It isn’t your job to do but it is something you can do. Dave is blocked until the API is created.

So, being a nice person, you tell Dave you will see what you can do for him over the next couple of days.

So why is it that what Dave hears is “Dave, I love you more than life itself, I am dedicated to this task and I WILL complete it before the end of tomorrow. My other tasks, emergency production issues and the untimely demise of my cat are all secondary to this endeavour.”.

You see, 24 hours later, Dave is at your desk “When will this be done?! I’m blocked until I get this!!!”. If he’s the guy I had recently his next step is to slap his fist into his palm as he utters, almost shouts “I NEED this!”.

No. No you don’t need it. What you need is for that slap to be in your face, followed by “wake up! You don’t go shouting at the guy digging you out the hole!”.

I find this particularly unacceptable when the favour is to be fixing some mess that Dave created, or doing something Dave told his boss he had finished last week. Of course, those are the exactly situations where Dave is most likely to get upset, as he is in real trouble and most likely to commit that ultimate Favour sin:-

Dave to Boss “I Didn’t get my task done as Martin promised to create the API and he hasn’t. I’d be there now if I only did it myself”.

If you are thinking “Hmmm, I think I might have been ‘Dave’ recently” then Shame On You and go beg forgiveness. Of course, if you were ‘Dave’ you may well be the sort of sod who will twist the situation around in your head so it was not your fault anyway. Grrr, bad Dave.

For a while I gave up doing work favours as I got sick of the situation above playing out. Then I started doing favours again but being a bore about saying repeatedly, up front, that this was a favour, it was only if I had time, not to rely on me and, if it is that important, go ask someone else. Yeah, sounds really grumpy doesn’t it? That gave me a reputation for not being a Team Player (which is code for “mug”).

Now I have a rule system. As soon as someone starts getting demanding about the favour, I immediately challenge it. If they get shouty they lose their favour rights. No more favours for you until the requisite number of beers have been bought. It’s three.

Of course, you see this scene played out on help forums all the time. Initial message is nearly always in upper case text speak “PLS HLP ME, IS URGNT! CN U TELL ME HOW 2 DO MY JOB – THNX!!!” and soon degrades into helfull person asking for details of the exact person and Mr Shouty demanding more and more help. I don’t help. After all, this guy is never going to buy me a beer.

OUGN 2012 First Day – First Panic March 21, 2012

Posted by mwidlake in Meeting notes, Perceptions, Private Life.
Tags: , ,
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I’m not really one for blogging about conferences – I mean who cares what someone else saw being presented? But this is the first time I have stopped moving long enough (and been in contact with the internet world) to blog and my brain is too fried to do a technical one.

The journey here was very smooth and the train from the airport to central Oslo makes the ratty, tatty, confined coaches of the UK look as awful as they really are. So I arrive in the central station and decide I will need some local Kroner to pay the taxi to the hotel. So I find an ATM, put in the card and ask for money. Card refused. Huh? But I rang my bank at the weekend and let them know there would be transactions from a foreign country (after some issues a couple of years back my wife always lets the bank know when she will be away and she made me do the same). I tried another ATM from a different company. Refused. OK, damned bank, I’ll use my other card. Refused. Errrr…… In a foreign country, no idea really where I am, not got any local currency. Not looking good.

I wander into Oslo looking for a real, proper bank. Most Norwegians speak perfect English, maybe if I still have problems I can go in and ask. Find bank, go to ATM, about to ask for money….Notice the figures being suggested on this ATM are a lot smaller than the last place. Yes, I had my mental decimal place in the wrong location and I had been asking for almost £1,000 rather than £100. No wonder the request got refused (I keep my daily limit low, it stops be buying too much rubbish on any given day).

So, I head off to the event, get there for Lunch and have a great afternoon. My presentation on IOTS went well and, as I said yesterday, I think I’ll put it to sleep for a while now.

I saw Harald Van Breederode talk about Oracle Database Smart Flash Cache before I did my slot and I always like to hear Harald talk. It was good as ever, but I found myself not so much interested in the idea of using SSD-type storage as an extra “slow SGA” extension (as opposed to a “fast storage” extension) but more that in 3 or 4 years, memory-based storage will be the default and a whole swathe of my knowledge will once more become redundant. I mean, how important will it be to keep physical reads down via things like IOTs once physical reads are relatively cheap? You won’t really care much about expanding your SGA with a secondary cache when you have 4TB of main memory and 100,000 IPS (inputs per second, we will have to see how much faster Output can be made with memory-based storage).

This highlights one of the things I really like about conferences, meetings and chatting to fellow techies in the pub. The actual main topic or point might well be interesting but the secondary thoughts and ideas can be just as striking. I was talking to Uwe Hesse after the talks had finished and part of that was about learning new stuff and training courses. It made me realise that it is way too long since I ran any training courses. I love running training courses.

OK, I’ve had a rest, back to socialising with fellow OUGN 2012 attendees.

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