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SQL Profile and SQL Baseline in Oracle Database SQL Profile and SQL Baseline are both used to optimize the performance of SQL statements in Oracle databases However, they work in slightly different ways: SQL Profile: It is a set of performance-related statistics and hints that can be applied to a specific SQL statement to improve its execution plan It is generated by the Oracle Optimizer and is based on the statistics and other
What is the difference between SQL Profiles and SQL Plan Baselines? In addition, a SQL profile created with the script prevents the optimizer from finding better plans if there are (for example) data volume or database schema changes SQL plan baselines report if a plan is not reproducing properly, and will properly manage plan changes in the long term using SQL plan management evolution
SQL Tuning Guide - Oracle Help Center No strict relationship exists between the SQL profile and a SQL plan baseline If a statement has multiple plans in a SQL plan baseline, then a SQL profile is useful because it enables the optimizer to choose the lowest-cost plan in the baseline
WHAT IS SQL PROFILE IN ORACLE DBACLASS You might have heard of SQL profile and SQL baselines in performance tuning chapters Lets today go through details about sql profile What is SQL profile: SQL profile is a collection of additional statistical information stored in the data dictionary that helps the optimizer to generate the best plan for the query SQL profile is […]
Oracle Live SQL Tutorial SQL Macros - Creating parameterised views This tutorial explains how to create a parameterized view using SQL Macros The examples use the built-in sales history schema so there are no setup steps Script Simple Explain Plan This script explains the plan for a query of the sh sales and sh products tables
how to create sql baseline in oracle 19c - Techgoeasy What is sql baseline? SQL Plan Baselines in Oracle Database are a way to maintain the performance stability of SQL statements When an SQL statement is executed, the Oracle optimizer determines the optimal execution plan for that statement based on various factors such as statistics, system settings, and bind variables
SQL Profile和SQL Plan Baseline有什么不同？ - 墨天轮 The best accepted plan is selected based on cost Again, if a SQL profile exists, it will influence the estimated cost and thus the accepted plan chosen for comparison against the non-accepted plan Hopefully this information gives you a clear picture of how SQL profile and SQL plan baselines differ and how they interact with one another!