Posts by Alex Gorbachev
REPORT SCHEMA is quite handy to get growth rate of your database/datafile/tablespace providing RMAN repository is used. I don’t remember what triggered that thought but I see it in my “to blog” list so here it goes.
In my UKOUG 06 presentation on block change tracking internals I assumed that “change tracking state change latch” is, probably, used by DBWR and CTWR to protect access to a buffer area in shared pool. I wanted to verify it and tried to trace this latch.
I worked on one site for a while and during 2.5 years it didn’t face a single media corruption of Oracle datafiles. But one day, my fellow DBA (who is usually extremely cautious and reviews his actions at least twice) overwrote a controlfile with some crap. Even the fact that controlfiles were on raw devices didn’t prevent this disaster from happening.
I believe that a good DBA should have well developed “peripheral vision”. It helps everywhere — troubleshooting production issues or performance problems, database/application design, system architecture, reading documentation, etc. I also notice that a newbie DBA with good peripheral vision catches up much faster than a strictly focused person.
First of all, there is now FREE Solaris 10 media kit available to order by mail if you’re not fancy downloading several GB. By the way, it also includes Sun Studio (anyone using it?). Second, I found a cool article on Solaris BigAdmin portal – Deployment Guide for an Open Source Stack on the Solaris 10 OS also available as PDF.
It will take me a while to follow up on all the presentations I’ve visited during UKOUG06 and photos I’ve taken. One of the best presentations was Inside RAC from Julian Dyke. Have a look.
I received a few emails from people who don’t have access to the UKOUG 2006 files, asking whether my presentations are available online. They are available and should appear on the Pythian Papers page shortly.
UKOUG 2006 is over and I was planning to finally provide a bit more details about it. I got a reminder that today is the last day to send IOUG abstracts. Since I planned to submit an abstract there – I rushed in and filled out two proposals based on responses I’ve got from my UKOUG presentations.
Interesting was the Anti-Tuning RAC round-table with conclusion that more or less majority is running RAC because they have way too much money/time/hardware/name it.
I can’t say a lot about presentations I went to as my head was completely empty after my 3 sessions. Last session was on Oracle Streams CDC – I am still not sure what the added value of CDC compare to regular Streams functionality. But the truth is I couldn’t think about anything else but Guinness at that point…