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akorotkov.github.io | ||
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www.bobbydurrettdba.com
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| | | | | We have been discussing query tuning at work and I've come back to an example of the Oracle optimizer choosing the wrong plan due to an error in its calculation of the number of rows returned... | |
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sqlmaria.com
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| | | | | At the recent OUG Ireland conference I had the privilege of participating in a panel discussion on the Oracle Database. During the course of the session the topic of Optimizer histograms came up. A... | |
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jonathanlewis.wordpress.com
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| | | | | A couple of weeks ago, having just arrived home from Spain, I got a phone call in Heathrow airport from an old client that I hadn't seen for about 18 months. They had a problem; as far as they could tell a business critical query had suddenly stopped using an index and was doing a... | |
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blog.yannickjaquier.com
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| | | SQL Plan Management feature overview through concrete example and its interactions with Adaptive Cursor Sharing (ACS) and SQL Profile | ||
