Oracle Virtualization and Cloud Consulting
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Plan change monitor prevents user impact from bad plan

This morning a colleague of mine noticed an alert from our plan change monitor and prevented any impact on the users by forcing a SQL’s plan to its normal fast plan before the users could be affected.  I want to share the monitor script and describe how we use its output.
I know this is long but I want to paste the SQL text of the monitor script here.  Review my comments on each step.  I can not remember the details of the script myself even though I wrote it but the comments hopefully will help:

Free Oracle Tuning Book

Quick Start Guide to Oracle Query TuningWho can resist a free book Rich Nimeiec book on SQL Tuning? O.K., those who know everything can resist. If you’re like me, this is an opportunity to learn from Rich.

I’m Graham Smith and this is how I work

I’m genuinely delighted that Graham Smith has added his profile to our ‘How I Work‘ series. Not just because he’s one of the World’s best known PeopleSoft experts, or just because he’s recently joined Cedar’s family of PeopleSoft consultants, but mainly because I was sure he’d give some really interesting answers.

Big companies are still reluctant to move some applications in the cloud

There is no doubt that cloud software is gaining ground among corporate users of all sizes, but while startups have been quick to adopt cloud computing, many corporate organizations have been more cautious to make the switch.

High-load clusters and desynchronized nodes on Percona XtraDB Cluster

There can be a lot of confusion and lack of planning in Percona XtraDB Clusters in regards to nodes becoming desynchronized for various reasons.  This can happen a few ways:

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