Tag: Oracle Exadata

Physical Disk, Cell Disk, Grid Disk, and ASM Disk in Exadata

This blog post mentions some of very important components of Exadata Storage Server, which are physical disks, cell disks, grid disks and ASM disks and their correspondence.

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Potential Data Loss Issue on Exadata

I just got an Exadata Customer Advisory e-mail from Oracle, identifying “an important issue that needs your immediate attention” and pointing to MOS note 1265396.1. The only fix is to upgrade to the newly-released version 11.2.2.1.1 of the storage server software.

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Log Buffer #206, A Carnival of the Vanities for DBAs

Welcome to Log Buffer, the weekly news blog about blogs in the datasphere.

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Oracle Exadata V1 Documentation is Published

I was searching oracle.com for some Exadata-related wait events, and noticed some hits popping up from formerly closely-held Exadata documentation. Upon closer look, I found the full Exadata V1 user’s guide. I hope the V2 documentation will be posted soon.

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Exadata Implementation Results: Recordings Available

For those of you who weren’t able to attend my webinar last week “Implementing Exadata: the results are in, recordings are now available here online.

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Exadata smart scans and the flash cache

One of the key features of Exadata V2 is the flash cache. Although commonly thought of as an OLTP-specific feature, it has also been marketed as a data warehouse accelerator. According to this frequently-used presentation slide, a full Exadata rack provides 21 GB/sec of disk throughput and 50GB/sec of flash throughput. was testing throughput using a simple query, making use of both smart scans and parallel execution. Here’s what the objects look like. They’re running on a quarter rack system with a stated capacity of 4.5GB/sec disk and 11GB/sec flash.

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Implementing Exadata: The results are in

Following up on my earlier webinar Implementing Oracle Exadata – Strategies for Success, I’ll be giving another webinar to present the results of the Exadata implementation at LinKShare. I’ll be talking about actual performance results, our zero-downtime go-live, compression experiences, and performance tuning in an Exadata environment.

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Log Buffer #203, A Carnival of the Vanities for DBAs

Welcome to Log Buffer. The weekly roundup of posts, and news of what’s happening in the database world.

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Lucky Winners of the Exadata Flight Giveaway

Congratulations to Chris Marlowe of Oppenheimer Funds and Bill Mitchell of Alliant Energy, attendees to my Exadata session yesterday. Both are lucky winners of the a flight with the inimitable Sean D Tucker and the Oracle Challenger. For those of you who missed the session, keep your eyes on this blog for a recording, coming soon.

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Oracle Exadata Database Machine v2 vs x2-2 vs x2-8 Deathmatch

This post has bee updated live from the Oracle OpenWorld as I’m learning what’s new. Last update done on 28-Sep-2010. X2-2 and X2-8 configurations have evolved over time so if you are reading this post now — beware of its age. The referenced data-sheets seems to be up to date though.

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