You can use the SQL Performance Analyzer to analyze the impact on SQL performance of any type of system changes, including:
Database upgrade
Database consolidation testing for pluggable databases (PDBs) and manual schema consolidation
Configuration changes to the operating system or hardware
Schema changes
Changes to database initialization parameters
Refreshing optimizer statistics
Validating SQL tuning actions
» Database upgrade, patches, initialization parameter changes
» Configuration changes to the operating system, hardware, or database
» Schema changes such as adding new indexes, partitioning or materialized views
» Gathering optimizer statistics.
» SQL tuning actions, for example, creating SQL profiles
» Database consolidation testing using Oracle Pluggable Databases or schema consolidation methods
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