High Executions Of Statement "delete from smon_scn_time..."
(Doc ID 375401.1)
Last updated on FEBRUARY 03, 2022
Applies to:
Oracle Database - Enterprise Edition - Version 10.1.0.2 to 10.2.0.4 [Release 10.1 to 10.2]Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.
A delete from smon_scn_time is performing excessive gets and executions as viewed from AWR report:
Buffer Gets Executions Gets per Exec %Total CPU Time (s) Elapsed Time (s)
205,501,888 30,508 6,736.00 54.05 9,733.97 61,180.96 delete from smon_scn_time where...
The AWR report shows the following SQL with an excessive amount of executions:
delete from smon_scn_time where thread=0 and time_mp = (select min(time_mp) from smon_scn_time where thread=0);
Cause
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In this Document
| Symptoms |
| Cause |
| Solution |