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mauro-pagano.com | ||
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carlos-sierra.net
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| | | | | SQLTXPLAIN, also know as SQLT, is a tool that helps to diagnose SQL statements performing poorly in an Oracle database. This tool is free to download and use. You only need to have access to My Oracle Support (MOS) and search for Document Id: 215187.1. Q: What do you get from this tool? A: In... | |
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alexzeng.wordpress.com
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| | | | | Outline is the oldest way to fix SQL plan. It based on hints like use_nl etc. It's a road map. It still can be used in 11.2 although oracle said it's deprecated. Finally, it is free. SQL profile is trying to impact CBO by adding cost estimation hints. You need pay extra money to use... | |
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iggyfernandez.wordpress.com
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| | | | | Dear NoCOUG members and friends, The golden rule of not tuning SQL is "operate with as little information as possible." Not only will this increase your chances of failure but it will make it difficult for others to help you. Every exercise in problem solving - no matter how little - has exactly six stages:... | |
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jonathanlewis.wordpress.com
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| | | I've lost count of the number of times I've reminded people that hinting (correctly) is hard. Even the humble /*+ index() */ hint and its close relatives are open to misunderstanding and accidental misuse, leading to complaints that "Oracle is ignoring my hint". Strange though it may seem, I'm still not 100% certain of what... | ||
