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kerryosborne.oracle-guy.com | ||
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dincosman.com
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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.... | |
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orastory.wordpress.com
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| | | | | There have been some interesting posts from Marcin Przepiorowski and Kerry Osborne about mapping sql plan management (spm) baselines to a corresponding sql id. The key to sql plan baselines (DBA_SQL_PLAN_BASELINES) is SIGNATURE. And why signature? It's not just another change to the key to identifying sql statements (HASH_VALUE -> (NEW_)HASH_VALUE / OLD_HASH_VALUE -> SQL_ID).... | |
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chandlerdba.com
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| | | | | Photo by Brian Patrick Tagalog on Unsplash July 2024. Oracle 19c, 23ai There are 3 main types of SQL Plan Management: SQL Profile SQL Plan Baseline SQL Patch So first some quick background info about the 3 options and then I'll tell you about my mistake. SQL Profile A SQL Profile is a collections of... | |
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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. | ||
