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Tuesday: it’s raining today

aggregator — Fri, 12 Mar 2010 23:45:20 +0000

The streets of San Franscisco are awash with rain. So are the pavements, sorry, sidewalks. Here and there stand clumps of delegates, in shock. Not just at the rain, but the fact that it is cold rain. Apparently Californians are only used to warm rain. My colleagues back in Englan have gleefully e-mailed me to say they are having some lovely sunny autumn days. I say it just goes to show, Open World is work and not a jolly. Anyway, next year Oracle are going to scale out the Howard Street tent to

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The return of The Scott And Larry Show

aggregator — Fri, 12 Mar 2010 23:45:19 +0000

Waiting for the keynote to start, the screens loop an animation of stacked cubes labeled “Database”,”Applications”, “Infrastructure” etc unfurling themselves into strands of little cubes which click-clack across the screen and then reform into the big cube. The effect is like a 3D version of the old skool game, Snake, in which you have to direct an ever-elongating python so it swallows mice, spiders and other small creatures. So anyway, on comes Scott McNealy in a sweater he describes as being “Oracle maroon”. I think Open World has missed Scott.. He was one of the few keynote

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Tuesday: it’s raining today

aggregator — Fri, 12 Mar 2010 23:45:19 +0000

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Tuesday: it’s raining today

aggregator — Fri, 12 Mar 2010 23:45:19 +0000

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The return of The Scott And Larry Show

aggregator — Fri, 12 Mar 2010 23:45:19 +0000

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Sunday: still on the same kick

aggregator — Fri, 12 Mar 2010 23:45:19 +0000

One of the advantages of membership of the Jet Lag Junta is that I had already been awake for several hours when Tom Kyte kicked off Oracle Develop at 09:00 on Sunday morning. The topic of Tom’s talk was What are we still doing wrong? It was a good mix of insight and humour. He covered: Underestimating complexity Not knowing how to ask for help We write/generate way too much code We pretend everything will be alright Security matters. I think Tom would be the first to admit that most of these are things he has been banging on about for years.

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The return of The Scott And Larry Show

aggregator — Fri, 12 Mar 2010 23:45:18 +0000

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Sunday: still on the same kick

aggregator — Fri, 12 Mar 2010 23:45:18 +0000

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Saturday: The light of San Francisco is a sea light

aggregator — Fri, 12 Mar 2010 23:45:18 +0000

Weather is going to be a feature of the conference this year. As the plane made its final approach into SFO out of the windows we could see this enormous blanket of fog laying siege to the city. The city itself was clear and the towers of Downtown glittered in the sunshine. Outside the airport, waiting for a taxi the sun was shining strongly enough to make me wish I had brought some sunscreen. But walking about SF later there was a cool wind. So a jacket, while not strictly required, was

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Sunday: still on the same kick

aggregator — Fri, 12 Mar 2010 23:45:18 +0000

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Saturday: The light of San Francisco is a sea light

aggregator — Fri, 12 Mar 2010 23:45:17 +0000

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Saturday: The light of San Francisco is a sea light

aggregator — Fri, 12 Mar 2010 23:45:17 +0000

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Speaking at Open World 2009

aggregator — Fri, 12 Mar 2010 23:45:17 +0000

All the leaves are brown and the sky is grey. Which hackneyed line can only mean one thing: OpenWorld 2009 is upon us. I have applied for Bloggers’ credentials so it occurred to me that I had better resume posting, in case anybody checks up on these things. One of the reasons why I haven’t blogged anything recently is that I have been working hard on my presentation. My talk is called Designing PL/SQL with Intent (seats still available!). I haven’t coded any PL/SQL for work this year, which ironically has given me time to

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Speaking at Open World 2009

aggregator — Fri, 12 Mar 2010 23:45:17 +0000

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Speaking at Open World 2009

aggregator — Fri, 12 Mar 2010 23:45:17 +0000

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How to CANCEL a query running in another session?

aggregator — Fri, 12 Mar 2010 23:45:14 +0000

Here’s a treat for Oracle geeks, hackers and maniacs out there… Update: As the beginning says, this article was meant as something interesting about Oracle’s internals and CTRL+C / OCICancel() handling. There’s a more practical way for canceling session calls if you are running Oracle Enterprise Edition and are currently using resource manager: You can set the consumer group for a session to CANCEL_SQL to cancel its current call: DBMS_RESOURCE_MANAGER.SWITCH_CONSUMER_GROUP_FOR_SESS ( session_id IN NUMBER, session_serial IN NUMBER, consumer_group IN VARCHAR2); Thanks to commenter “null” for this info. Note that I haven’t tested how/whether this feature works correctly so there’s homework for you I recently received a

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A Free afternoon seminar in Singapore (24th Feb)

aggregator — Fri, 12 Mar 2010 23:45:13 +0000

If you are in Singapore and have 24th Feb afternoon available then you can register and join a free Oracle performance troubleshooting seminar I’m doing in Singapore Management University’s (SMU) campus. The seminar will be about: Systematic Oracle Performance Troubleshooting Identifying performance troublemakers Understanding execution plans The date is Wednesday, 24th Feb The seminar time is from 15:30-19:00 (don’t be late) Registration and more details are here: http://tech.e2sn.com/events/singapore-oracle-meetup/

New versions of LatchProf and LatchProfX for latch contention troubleshooting and tuning

aggregator — Fri, 12 Mar 2010 23:45:13 +0000

The LatchProf and LatchProfX scripts allow you to be more systematic with latch contention troubleshooting and tuning. No more guesswork is needed as these scripts give you exact session IDs and in this version also SQLIDs of the troublemaking applications. You can download the new versions here: LatchProf (reads V$ views) LatchProfX (reads X$ tables, but gives better info, run as SYS) Example output (with SQLID info) is below: SQL> @latchprof name,sid,sqlid % % 100000 -- LatchProf 1.21 by Tanel Poder ( http://www.tanelpoder.com ) NAME SID SQLID Held Gets Held % Held ms Avg hold ms ----------------------------------- ---------- ------------- ---------- ---------- ------- ----------- ----------- cache buffers chains 133 3jbwa65aqmkvm

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Oracle Troubleshooting: How to read Oracle ERRORSTACK output?!

aggregator — Fri, 12 Mar 2010 23:45:12 +0000

I have written the first article to the troubleshooting section of my new website tech.E2SN.com: It’s about a very valuable Oracle troubleshooting tool -> ERRORSTACK trace. I cover 4 frequently asked questions there: Reading the current executing SQL statement text from errorstack trace Reading the current executing PL/SQL package and PL/SQL source code line number from errorstack trace Reading the current bind variable values from errostack trace Identifying how much private (UGA) memory a cursor is using You can read it here: http://tech.e2sn.com/oracle/troubleshooting/how-to-read-errorstack-output By the way, if you like my new website, feel free to link to it !!! http://tech.e2sn.com

Future appearances, conferences and seminars

aggregator — Fri, 12 Mar 2010 23:45:12 +0000

Just to let you know where I’ll be in the near future Seminars Advanced Oracle Troubleshooting 2.0 I have rearranged and adjusted the material so it flows smoother, has even more practical tools and scripts and describes some internals even deeper 3-5 March – New York 15-17 March – San Francisco These dates are close, last chance to register Note that after these I won’t be doing an Advanced Oracle Troubleshooting class in US for a while… Conferences Hotsos Symposium, Dallas, TX, 8-11 March I will deliver 2 presentations at the Hotsos Symposium 2010 Back to Basics: Choosing the Starting

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