AWR Report Generation Slow After DB Version Upgrade. 10046 Trace File Shows Queries With High Elapse Time on DBA_HIST_SEG_STAT_OBJ & DBA_HIST_SEG_STAT
(Doc ID 2148489.1)
Last updated on DECEMBER 11, 2019
Applies to:
Oracle Database - Enterprise Edition - Version 11.2.0.4 and laterOracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Exadata Express Cloud 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
- Generating AWR reports is very slow.
- 10046 trace file collected for the generation of the AWR reports shows most time is spent on recursive queries on DBA_HIST_SEG_STAT_OBJ & DBA_HIST_SEG_STAT.
Changes
DB was upgraded to a higher version.
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |