DBMS_STATS Job Poor Performance on a Large Partition or Sub-partitioned Table Due to Statement Syntax Missing Proper Granularity
(Doc ID 1318065.1)
Last updated on FEBRUARY 02, 2022
Applies to:
Oracle Database - Enterprise Edition - Version 11.1.0.7 to 11.2.0.2 [Release 11.1 to 11.2]Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud 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
Information in this document applies to any platform.
Symptoms
- There is a problem regarding the amount of time required to collect stats for an existing table.
- You are using DBMS_STATS to collect statistics for the object
- This table is partitioned and has many partitions
Changes
Some common changes associated with newly detected slow statistics collection include: Upgrade, patching or migration.
Other sources include new statistics collection methods such as changes from scheduled stats collection or granularity
For the specific SR leading to this note the user was re-introducing statistics collection for a targeted table after a prolonged suspension of statistics collection.
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |