Tag: Oracle

Log Buffer #213, A Carnival of the Vanities for DBAs

Warm welcome to the Log Buffer, a weekly amalgamation of database news across different technologies. Let’s get warmed up with sizzling Log Buffer #213.

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Encryption RMAN Backup

Here’s a test scenario of encryption RMAN backup sets on disk:

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Congrats to Fahd Mirza on Becoming an Oracle ACE

Last week brought great news to Pythian – one of our DBAs in Pakistan, Fahd Mirza, has become an Oracle ACE. Fahd joined Pythian in September 2010 as the very first Pythian employee in Pakistan and thanks to his skills and ambitions ended up on the team supporting Exadata environments. I should also mention that another Oracle ACE DBA joined us recently – Jared Still. Jared is a well respected member of Oracle community, member of the OakTable Network and a veteran of the Oracle-L mailing list

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Making the Most of Exadata, Revisited

Greg Rahn of Oracle’s real-world performance group posted a technical review of an article I wrote last summer, entitled Making the Most of Oracle Exadata. I have a few comments on the technical concerns Greg raised.

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Presenting at TCOUG 2011 Winter Meeting

I will be speaking at the Twin Cities Oracle Users Group 2011 Winter Meeting. It’s the first time I’m speaking for this user group so I’m excited to meet the new audience. I will present one hour version of my Grid Infrastructure Internals session. Of course, no demos during presentation as it’s just enough to cover the theory slides but I’ll leave the demo as a homework as usual. :)

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Oracle Database Consolidation – What’s Your Story?

I’m working on a small story about database consolidation and interested to learn what are success and failures that others are going through. While we have our own experience at Pythian, I find it interesting to learn about what others are going through. If you have enough details, it would be nice to see your feedback along these lines…

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Seems Oracle is Giving us some Extra Time

I just read on Metalink (1130327.1) that we Commodore 64 users who have to patch our 10.2.0.4. will get extened support untill April 30, 2011

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ORA-00214 and Control File Mismatch

The scenario goes like this: The instance was in nomount stage and was unable to mount the database. Checked the uptime, and found that the server was rebooted some 5 minutes ago, and the instance tried to come up automatically but failed to mount the database. Checked the alert log and found the following error: ORA-214 signaled during: ALTER DATABASE MOUNT…Made a quick searched about ORA-00214 and it was about mismatched control files. It was probably due to the fact that control files got out of sync as the not-so-graceful reboot of the server was done without first cleanly shutting down the database. This is what doc says:

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Choosing the Appropriate Driver

For this blog I have compiled the main information regarding JDBC drivers specifically considering the 11gR2 platform, but the concepts and idea also apply for older platforms as well.

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Installing 11gR2 Grid Infrastructure in 5 Easy Lessons

It started out innocently enough: Two node RAC cluster on two Linux RHEL5 with Netapp NFS used as shared filesystem for all shared files. My favorite OS and storage, so I felt confident that clusterware installation will be as smooth as it usually is. I told the customer that this can be done in 3 hours. What I didn’t take into account is that this was my first 11gR2 installation, and that much have changed since 11gR1. As things turned out, it took over 20 hours of my time and a lot of help from colleagues and even former colleagues before we had a successful installation. The time it takes you to read this blog post (and any other on this subject) is likely to be time well spent.

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