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 savvinov.com
Reading SQL plans - Oracle Diagnostician
| | rwijk.blogspot.com
About Oracle: Filter predicates with NVL on mandatory columns using the index
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| | www.dbaglobe.com
Donghua's Blog - DBAGlobe: Performance Tuning using Windowing Aggregate Functions to avoid table self-join
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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.
| | dincosman.com
Direct Path Read Decision in Oracle: Beyond the Optimizer - Osman's DBlog
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| | The performance issue with an SQL query was resolved by using the /*+ PARALLEL(2) */ hint, reducing execution time from 180-200 seconds to milliseconds. The decision to perform a direct read from disk to memory instead of reading blocks from disk was made by the database engine and is controlled by the hidden "_serial_direct_read" parameter....
| | blog.yannickjaquier.com
SQL Plan Management
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| SQL Plan Management feature overview through concrete example and its interactions with Adaptive Cursor Sharing (ACS) and SQL Profile