Log Buffer #196, A Carnival of the Vanities for DBAs

Jul 23, 2010 / By Vanessa Simmons

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Welcome to Log Buffer, the weekly roundup of database industry news.

For your reading pleasure this week we have Log Buffer #196:

Charles Hooper blogs about an in-depth investigation on what can cause Oracle to ignore a hint.

Doug Burns reminds his readers that there are only two weeks left to submit papers for UKOUG. The deadline is Aug. 2.

A while back Greg Rahn at Structured Data blog thought that the best way to get results out of Exadata is by changing your application to get the most out of Exadata. He was very happy to see that Pythian thinks the same. On the subject of Exadata and data warehousing, Greg posts this week on the core performance fundamentals of Oracle Data Warehousing – set processing vs row processing.

Jonathan Lewis links to instructions and explanations on how to switch to a different UNDO tablespace. It is trickier than it sounds and Jonathan provided additional traps to watch out for.

Jonathan also continues his fragmentation series with an explanation of table fragmentation and its causes.

Alex Fatkulin explains about ASM mirroring and disk partnership and why you may have less redundancy than you thought.

On the same subject, Jeremy Schneider of Ardent Performance blog explains about hot disks, raid and what it means for ASM mirroring.

Back to blogging after a recent trip to TechInsights 2010, Edwin Sarmiento answers questions on what needs to be done as part of the installation of a SQL Server 2008 R2 Failover Cluster on Windows Server 2008 R2. A number of things related to Windows Clustering need to be considered.

Willie Favero introduces the “IBM zEnterprise System”, on his blog Getting the Most out of DB2 for z/OS and System z.

On Join-fu! the Art of SQL blog, Jay Pipes talks about getting started developing Nova on Linux, as he’s involved in a new OpenStack project.

Peter Zaitsev, on MySQL Performance Blog, posts about estimating replication capacity so that replication load can be dealt with before slave is unable to catch up.

Paul Randal publishes his survey results around the purchase and use of SSIDs.

And, if you happen to be attending Oracle OpenWorld, register before July 30 to take advantage of early bird rates.

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