Answer / guest

Cause: Supplemental logging was not turned on while there is
a logical standby database in the configuration. This could
happen either on the primary or on the logical standby that
is being switched over to be the primary.

Action: Check Data Guard broker log for more details. Issue
"ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (PRIMARY KEY,
UNIQUE INDEX) COLUMNS" to add supplemental logging.

Please add more information about this Error

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