High Waits for 'cursor: pin S wait on X' due to Dynamic Sampling Against Parallel Queries
(Doc ID 2006145.1)
Last updated on MARCH 12, 2021
Applies to:
Oracle Database - Enterprise Edition - Version 12.1.0.1 to 12.1.0.1 [Release 12.1]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 Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.
Symptoms
- The top wait event from AWR report shows 'cursor:pin s wait on X' as the top event:
- This issue may also occur when running Real Application Testing and replaying data. The AWR Compare Period report after the replay may show higher waits for 'cursor:pin s wait on X' compared to the original in the top wait events section
Cause
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In this Document
| Symptoms |
| Cause |
| Solution |
| References |