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oracle-randolf.blogspot.com
| | www.xt-r.com
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| | ????????? ???? ????? ?? ?????? ??????, ??? ?????????? ??????????, ??????, ???????, ????? ? ??????? ??????????? ?????? : ???? ????? ????????...
| | www.dbaglobe.com
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| | A blog about on new technologie. Hands-on note about Hadoop, Cloudera, Hortonworks, NoSQL, Cassandra, Neo4j, MongoDB, Oracle, SQL Server, Linux, etc.
| | jonathanlewis.wordpress.com
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| | Here's a simple detail about bind peeking (during optimisation) that makes a big difference to "fetch first/next" queries. The optimizer knows about your bind types, and can peek at the bind values - but that doesn't mean it will do something sensible with them. Here's a little model to demonstrate the problem - starting with...
| | 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...