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Logminer Raises The Error "In Memory Undo is unsupported" When Selecting From v$logmnr_contents (Doc ID 428167.1)

Last updated on APRIL 03, 2020

Applies to:

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


Q1: Why does the error "In Memory Undo is unsupported" appear when vselecting form v$logmnr_contents?

Q2: If the changes to supplemental logging were made, could we then read the transaction reads that were returning the UNSUPPORTED message?

Q3: Would enabling supplemental logging make the logminer able to read transaction records that were created before supplemental logging was enabled?


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