Tag: Oracle

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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Oracle DBA & DEV: MERRY CHRISTMAS!

Just to make you smile and let you remember all those sweet holidays I would like to congratulate you and wish you MERRY CHRISTMAS! in Oracle style:

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Just Learned I have Passed 2 Oracle Certification Exams …

Hey ALL! I just got a very good present from Santa :) I Passed 1Z1-536 Oracle Exadata 11g Essentials and 1Z1-515 Data Warehousing 11g Essentials certification exams. How cool it is if small things like these can make you rejoice like a child :) I am still smiling ….

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11G R2 Cluster: AVOID using sqlplus & lsnrctl for Oracle

For last few months I was part of the Pythian’s team helping implement Oracle 11gR2 Clusters for different Oracle customers. All the implementations had different requirements and configurations, however, in all cases, the client’s DBAs made the same mistake over and over again. They used sqlplus and lsnrctl utilities to manage (start/stop) databases and listeners. This is totally wrong in the 11gR2 Cluster world. The following commands are just few examples on how you should start/stop Oracle processes

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DBD::Oracle and Oracle 11gR2 – Battle of Bits

11gR2, lib32 directory no longer exists and 32 bit libraries are no longer provided. Which means that there is no way to use 32 bit Perl to connect to Oracle. BTW. This applies to other 32 bit clients as well. I’ve heard that SAP can’t support 11gR2 for a similar reason. What do we do? Here are the options.

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DBD Release 1.27 Release Candidate 1

Sorry, no funny nick name for version 1.27 but here is the scoop on it anyway. This version removes ‘PERL_POLLUTE’ and adds in PL_ so it will be fully compatible with Perl 5.13. So in a nutshell 1.27 is a single issue maintenance release.

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Log Buffer #209, A Carnival of the Vanities for DBAs

Welcome to Log Buffer, the weekly news update of happenings in the database world.

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Updating ASMLIB Driver Using “update-driver”

In this post I want to talk about updating ASMLIB after or before updating kernel version. Beginning oracleasm-support version 2.1.0 and higher we can use the embedded function “update-driver” which can help us to save time and simplify the process of updating ASMLIB driver.

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Failure Scenarios for your Restore Practice

I always tell DBAs to practice their restore skills because this is one area that you are not allowed to get wrong. Having experience with different types of restores give you the confidence to do the right thing in an emergency. However, I noticed that when it comes to practicing, not all DBAs are equally imaginative on what to practice. Practicing the same failure over and over is not the best possible practice. Here are few scenarios you should be able to recover from

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