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Logminer Returns EMPTY_CLOB For LOB Columns (Doc ID 1328520.1)

Last updated on FEBRUARY 25, 2019

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 10.2 to 11.2]
Oracle 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 Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.


Even if the supplemental logging is set at the database level, when mining redo logs with Logminer, you cannot extract the LOB data, EMPTY_CLOB is returned.


The example below shows the Logminer behavior in 11g:


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