About

Martin Klier

usn-it.de

Oracle DML Parallel Execution Don’ts

Have you ever waited on a parallelized statement? Parallel execution is said to be fast, efficient, system-exhausting. Far from that! There’s a 10.2.0.4 x86_64 system with 16 cores and over 600MB/s write-IO ability, one statement running, one CPU burning, one developer waiting. For days. Finally, at the end of the week, the admin is involved. […]

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Nerd compliments.

If anybody ever considers joining irc.freenode.net #oracle (what I’d recommend for all Oracle interested folks), be prepared for being treated like that: <nayyares> it worked !!! <usn> wait some time, it might crash, or restart all cluster services to see if there is a boot bug <nayyares> ok, i am monitoring usn <Rudemeister> Im also […]

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Sun ZFS – cool stuff

Basically, I don’t like mirroring google. But this one is really cool stuff, and, by the way, it’s merely linking google. ZFS-Video by Systemhelden Yeah, I really like it! But the video has a weak point: After randomizing the devices this way, you can’t simply pull the plug of one USB hub any more. Anyway, […]

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