How To Configure Automatic Purge(Drop) Of SQL Plan Baseline(SPM).
(Doc ID 1438701.1)
Last updated on SEPTEMBER 12, 2018
Applies to:Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.
From Oracle 11g Release 1, "SQL Plan Management" (SPM) records and evaluates the execution plans of SQL statements over time to maintain and manage Plan Stability. This mechanism can build a SQL plan baseline, which is a set of accepted plans for a SQL statement.
This article looks at the configuration and retention of plan baseline.
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