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I see why people get a bit upset about the privacy aspects of Google Streetview! On the other hand, it is rather amazing. To sit here in my office in Vienna and be able to walk around where I used to live at Southampton University. First house (where I lived Summer 1996 – Summer 1997) Second house (where I lived Summer 1997 – Summer 1998) In comparison to my first house, even the flat I’m living in now doesn’t look too bad :)
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There is ample detailed information out there on installing wordpress. However, I wanted to just provide a small supplement about setting up two distinct wordpress blogs within a single apache2 web site. The system I am using is Ubuntu Linux 8.10, but other than the package installation, the configuration steps should be the same on other linux distributions. As a first step, read through the Wordpress Installation Instructions . You wil....
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Flat fee music subscription service has changed my life. I wish there was some less dramatic way to put it, but it's the honest truth. I don't remember exactly when, but somewhere in late 2006 probably, after reading this Joel on Software - The infinite music collection article, I was intrigued by the idea and did a little shopping. I know I looked at Napster, Virgin, Yahoo, and Rhapsody at least. I think I initially went with Rhapsody be....
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I have decided to start a "professional" blog. I use the word "professional" only in the sense of "not personal". I will post about software engineering, computers, consumer electronics, and music technology primarily. I hope you enjoy it and look forward to any conversations this generates.
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Anyone who’s looked into Oracle X$ tables, knows that their names are really complicated and quite unreadable (and non-pronouncable), such X$KZSRT, X$KCPXPL, X$KQFSZ and so on. A few years ago at some conference someone came up with a thought that the reason why Oracle has so unreadable names for its X$ tables is that the leading edge database source code was actually stolen in the 80’s from a Soviet Union intelligence agency.
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Anyone who’s looked into Oracle X$ tables, knows that their names are really complicated and quite unreadable (and non-pronouncable), such X$KZSRT, X$KCPXPL, X$KQFSZ and so on. A few years ago at some conference someone came up with a thought that the reason why Oracle has so unreadable names for its X$ tables is that the leading edge database source code was actually stolen in the 80’s from a Soviet Union intelligence agency.
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When debugging, I often found that NSLog is really boring, here is an attempt to make it nicer: ` NSLog(@"mycar: %@",myCar); NSLog(@" I'M HERE "); ` NSLog doesn’t tell you where the call was made (which file or which method), so you end with a lot of: 2009-03-11 22:30:53.789 ObjCTest[1565:10b] mycar: Porsche 2009-03-11 22:30:53.791 ObjCTest[1565:10b] I’M HERE A better NSLog could tell us: 2009-03-11 22:32:25.823 ObjCTest[1581:10b] Car.m:32 ..
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Today and tomorrow I am at an Ask Tom Live Seminar in Prague . Tom Kyte works for Oracle and has written many books on Oracle. For me he’s a bit of a “star”, so when I heard he was talking in Europe, I had to come. (But is that wrong? Normal people are in to stars like Robbie Williams surely, not Oracle experts.) Wow there is so much I don’t know about Oracle evidently. I mean the solutions that he is presenting concerning Oracle 11g, ar..
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Yanko Design's You-SB concept : Jerry's real prosthetic USB finger storage : The story behind this is that Jerry had a motorcycle accident last May and lost a finger. When the doctor working on the artificial finger heard he is a hacker , the immediate suggestion was to embed a USB "finger drive" to the design. Now he carries a Billix Linux distribution and the Freddy Got Fingered movie as part of his hand. Yan..
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I haven’t blogged for a while. This is partly because my daughter and I have been enjoying some major events in Toronto (Ontario Science Centre, ROM, shopping, more shopping, etc.), and not much has happened in the Geek world aside from the new Apple hardware updates and Firefox achieving 100% market share in Antarctica. However, the main reason I haven’t blogged is that I have been engrossed with reading the 10th Anniversary book from ..
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I haven’t blogged for a while. This is partly because my daughter and I have been enjoying some major events in Toronto (Ontario Science Centre, ROM, shopping, more shopping, etc.), and not much has happened in the Geek world aside from the new Apple hardware updates and Firefox achieving 100% market share in Antarctica. However, the main reason I haven’t blogged is that I have been engrossed with reading the 10th Anniversary book from ..
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I thought to post about another new interest of mine, TimestTen, as I’ve worked with it in past and I have become a fan of it, especially after Oracle bought the company. Oracle has announced that TimesTen in-memory database will support PL/SQL in the upcoming release. That’s in 11gR2, where TimesTen is named the “in-memory database cache”. I’m happy to see the deep level of integration Oracle is doing with it. It looks like both classi..
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I thought to post about another new interest of mine, TimestTen, as I’ve worked with it in past and I have become a fan of it, especially after Oracle bought the company. Oracle has announced that TimesTen in-memory database will support PL/SQL in the upcoming release. That’s in 11gR2, where TimesTen is named the “in-memory database cache”. I’m happy to see the deep level of integration Oracle is doing with it. It looks like both classi..
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If you read my previous blog on the economy, you’ll see how I explain recessions as part of the inherent flaw of capitalism. As a recap, it is essentially because business people need to earn more than their customers, and their customers need to make more than the business people. This concept would make one wonder how capitalism works at all.
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The full power of Oracle’s diagnostic events, part 1: Syntax for KSD debug event handling
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tanelpoder.com
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17 years ago
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eng
There’s a recent thread in Oracle-L about deadlocks and a recommendation to dump various instance information when the deadlock happens. A deadlock trace dumps some useful things automatically, but sometimes you want more, especially in RAC environment. So is it possible to make Oracle dump additional things when the deadlock event happens? Yes it is and it’s doable with Oracle diagnostic event handling infrastructure. First I’ll take....
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The full power of Oracle’s diagnostic events, part 1: Syntax for KSD debug event handling
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tanelpoder.com
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17 years ago
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eng
There’s a recent thread in Oracle-L about deadlocks and a recommendation to dump various instance information when the deadlock happens. A deadlock trace dumps some useful things automatically, but sometimes you want more, especially in RAC environment. So is it possible to make Oracle dump additional things when the deadlock event happens? Yes it is and it’s doable with Oracle diagnostic event handling infrastructure. First I’ll take....
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Cool, just discovered: if you’re using the (UNIX command-line program) “less” to view a file, you can hit the “v” character to open the file in “vi”!
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Being a geek, I’ve always liked the word 'metric.’ A metric is a number or other quantitative object (physicists like 'metric tensors’) which measures something. I have three paintings drying right now (i.e., too wet to work into without screwing up areas). A thought occurred to me as I was thinking about what to work on next, that the number of drying paintings could be a metric of how artistically busy you happen to be at the moment. C....
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Being a geek, I’ve always liked the word 'metric.’ A metric is a number or other quantitative object (physicists like 'metric tensors’) which measures something. I have three paintings drying right now (i.e., too wet to work into without screwing up areas). A thought occurred to me as I was thinking about what to work on next, that the number of drying paintings could be a metric of how artistically busy you happen to be at the moment. C....
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My friends at ProgramUtvikling just published the first PodCast in the series Oslo Developer Conversations. In this PodCast, yours truly interviews Uncle Bob about software craftsmanship. The podcast is still only available as video, but audio will come shortly. I had a great time doing this interview and I’m particularly happy that we managed to have a good combination of a technical discussion and an informal discussion. I’m looking forwa..
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It might strike you odd that I’m libertarian - that is, I want government as small and harmless as possible - and that my political view is rooted deeply in my faith. You see, I believe God gave us a gift, a gift so very precious that we have created a government to protect it. The government has often mishandled this gift, and so have we. We don’t really deserve this gift, but we have it.
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ZFS is all about performance (many levels of caching, pre-fetch, …) and memory consumption :-) Here are my last links about ZFS [internals](http://src.opensolaris.org/source/xref/onnv/onnv- gate/usr/src/cmd/mdb/common/modules/zfs/zfs.c#333), it’s worth a read if you plan to use ZFS on large productions : The slides of Adam Leventhal’s talk for the OpenSolaris Storage Summit : ZFS, Cache, and Flash c0t0d0s0.org : a very good explanation of t..
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60000 bind variables?! Maybe it’s time to use a temporary table instead…
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tanelpoder.com
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17 years ago
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eng
I just noticed a bug 8277300 filed in Metalink with following description: ORA-7445[XTYQBCB] OCCURS DURING EXECUTING SQL THAT USES 60000 BIND VARIABLES . Wow! That’s about 100 times more bind variables in a single query than what I’ve seen in past. And I thought that query was bad!!! :) I suspect this is a massive IN list passed to a query. Maybe it’s time to use a temporary table or a collection for passing in the IN values instead?
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60000 bind variables?! Maybe it’s time to use a temporary table instead…
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tanelpoder.com
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17 years ago
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eng
I just noticed a bug 8277300 filed in Metalink with following description: ORA-7445[XTYQBCB] OCCURS DURING EXECUTING SQL THAT USES 60000 BIND VARIABLES . Wow! That’s about 100 times more bind variables in a single query than what I’ve seen in past. And I thought that query was bad!!! :) I suspect this is a massive IN list passed to a query. Maybe it’s time to use a temporary table or a collection for passing in the IN values instead?
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The sky is falling. Everyone’s losing their job. The dollar isn’t worth what it used to be. Everything’s doom and gloom. Yet economists and politicians seem to insist that this is all part of a cycle, which includes recessions, booms, depressions, bull markets, bear markets, and other mumbo jumbo.
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We all know that cigarettes and alcohol can be expensive because states will tax the hell out of time. Currently, California has virtually no money, and one politician has come up with a solution: tax recreational marijuana.
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Five unit testing tips #4: Don't mock your way into accidental complexity
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jhannes.github.io
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17 years ago
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eng
I’ve all but stopped using mock objects in my tests. The reason is that mocking have had a detrimental effect on the design of my systems. I’ve often ended up having the mocks trick me into adding a needless layer of indirection that does nothing except delegate to the next layer, just to satisfy the mocks. For a while, I was wondering whether I was the only one with this problem, but then I saw this tutorial on JBehave, which so perfectly ..
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Or in other words, how to translate SQL_ID to a hash value :) I once wrote a script to demo this in my Advanced Oracle Troubleshooting class. Check this, I’ll run a query and then check what is its SQL_ID and HASH_VALUE from V$SQL: SQL> select * from dual ; D - X SQL> select sql_id, hash_value from v$sql 2 where sql_text = ' select * from dual '; SQL_ID HASH_VALUE ------------- ---------- a5ks9fhw2v9s1 942515969 So, V$SQL..
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Or in other words, how to translate SQL_ID to a hash value :) I once wrote a script to demo this in my Advanced Oracle Troubleshooting class. Check this, I’ll run a query and then check what is its SQL_ID and HASH_VALUE from V$SQL: SQL> select * from dual ; D - X SQL> select sql_id, hash_value from v$sql 2 where sql_text = ' select * from dual '; SQL_ID HASH_VALUE ------------- ---------- a5ks9fhw2v9s1 942515969 So, V$SQL..
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Cuba Street Fair, Wellington At the end of a few days here in Wellington, I am flying home today. This is one of my favorite cities in the world. It has been fabulous to see Neil and Amelia again, to go shopping (the US dollar is finally stronger after several years in the gutter), to go to art galleries and to walk up and down Cuba Street . Yesterday we braved the crowds at the Cuba Street Carnival, then came home and made dinne....
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Cuba Street Fair, Wellington At the end of a few days here in Wellington, I am flying home today. This is one of my favorite cities in the world. It has been fabulous to see Neil and Amelia again, to go shopping (the US dollar is finally stronger after several years in the gutter), to go to art galleries and to walk up and down Cuba Street . Yesterday we braved the crowds at the Cuba Street Carnival, then came home and made dinne....
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Cuba Street Fair, Wellington At the end of a few days here in Wellington, I am flying home today. This is one of my favorite cities in the world. It has been fabulous to see Neil and Amelia again, to go shopping (the US dollar is finally stronger after several years in the gutter), to go to art galleries and to walk up and down Cuba Street . Yesterday we braved the crowds at the Cuba Street Carnival, then came home and made dinne....
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Welcome to my blog! Bear with us here, were just now getting the site set up, getting the kinks and the bugs out of the system.
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In NAT mode (the default one), virtualbox does not give you the possibility to directly connect to your guest os. Here is how to configure your Virtualbox to simply ssh myguest For example my guest is called “Solaris10u6”, configured to used e1000 card, the default in solaris configuration, (The host os is a Mac). Type this command in terminal: `VBoxManage setextradata Solaris10u6 “VBoxInternal/Devices/e1000/0/LUN#0/Config/ssh/Protocol” TCP..
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From the autodie manual : It is better to die() than to return() in failure. — Klingon programming proverb. (“die” in perl is like throwing an exception.) (via $foo magazin )
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Monday morning and Jan, Timo and I are on the Northbound train from Christchurch to Picton. Outside, greens and browns of grasses, dry scrub, and trees blur together with grey skies, rain and the dun coats of sheep. It always seems to rain during my train trips here. It’s hard to believe that just Friday morning we were at the South Pole. Thursday night, having Bag Dragged and then sweated in the sauna ('Epic’ was how colleague St....
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Monday morning and Jan, Timo and I are on the Northbound train from Christchurch to Picton. Outside, greens and browns of grasses, dry scrub, and trees blur together with grey skies, rain and the dun coats of sheep. It always seems to rain during my train trips here. It’s hard to believe that just Friday morning we were at the South Pole. Thursday night, having Bag Dragged and then sweated in the sauna ('Epic’ was how colleague St....
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Monday morning and Jan, Timo and I are on the Northbound train from Christchurch to Picton. Outside, greens and browns of grasses, dry scrub, and trees blur together with grey skies, rain and the dun coats of sheep. It always seems to rain during my train trips here. It’s hard to believe that just Friday morning we were at the South Pole. Thursday night, having Bag Dragged and then sweated in the sauna ('Epic’ was how colleague St....
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As part of my chess goal for 2009 I’m am working on entering as many tournaments as possible. My first one was a 6 round 25+5 at The Manukau Institute of Technology on the Saturday after Waitangi Day. The venue is close to the Otara Markets so my partner dropped me off and went shopping … Continue reading MIT Waitangi Rapid – 7 Feb 2009
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Just a quick one-liner to let everyone know I’m safely in New Zealand enjoying oxygen- and moisture-rich air. Will post photos and more details tomorrow or as time allows.
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This Thursday I attended a Twestival organized by jenleereeves and finally got to meet up with a ton of local “tweeters” I’ve followed for quite a while as well as meet several for the first time. In addition to finally meeting face to face, we also bid on auction items for charity:water. Good times plus helping support a good cause. I have to say it was a really awesome experience… an interesting mix of local tech heads, photographers, jou..
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Just a quick one-liner to let everyone know I’m safely in New Zealand enjoying oxygen- and moisture-rich air. Will post photos and more details tomorrow or as time allows.
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