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Intermittent Malformed SQL_UNDO Containing NULL In V$LOGMNR_CONTENTS (Doc ID 2418630.1)

Last updated on APRIL 03, 2020

Applies to:

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
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.


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Update statement from SQL_UNDO contain NULL for columns values, instead of the actual values. Replicating this statement through Golden Gate, generates errors.

Golden Gate application fails with ORA-1403 error, intermittently, for some update operations. Logminer output for an update operation shows the following SQL_UNDO :

This malformed sql_undo is triggered only for DML on compressed tables .


 OLTP Compression enabled.


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