How To Identify LOB Segment Use PCTVERSION Or RETENTION From Data Dictionary
(Doc ID 422826.1)
Last updated on FEBRUARY 01, 2022
Applies to:Oracle Database - Enterprise Edition - Version 18.104.22.168 to 10.2.0.5.0 [Release 9.2 to 10.2]
Oracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database 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.
Oracle Server Enterprise Edition - Version: 22.214.171.124 to 126.96.36.199
The Purpose of this Note Is To explain the behavior of PCTVERSION and RETENTION in LOB Segments.
The Following Example shows the issue.
Create a LOB specifying PCTVERSION = 5 and create another one specifying RETENTION.
When query DBA_LOBS, would not expect to see default PCTVERSION = 10 when RETENTION was specified.
see the change in value under PCTVERSION, but both PCTVERSION and RETENTION columns are populated.
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