High Number of Executions for Recursive SQL Statements Due to Use of Pending Statistics (SQL ID: a2059j2q1bpm5, ct8wd6x64w8rf, gf9z4nnhvsa8s)
(Doc ID 2234532.1)
Last updated on DECEMBER 05, 2019
Applies to:
Oracle Database - Enterprise Edition - Version 11.2.0.4 and laterOracle 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
Information in this document applies to any platform.
Symptoms
- Large number of executions of recursive query with SQL_ID(s) : gf9z4nnhvsa8s or ct8wd6x64w8rf or a2059j2q1bpm5
- The SQL Text may have the comment /* QOSPS_TAB */ which indicates that the queries are looking for pending statistics for table objects (SQL_ID: a2059j2q1bpm5)
- The recursive SQL(s) statements may appear near the top of the AWR reports under the section SQL Ordered by Executions
Changes
Changed the value of the parameter optimizer_use_pending_statistics to a value of TRUE at system level
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |