Oracle Database Error Code ORA-16806 Description :
supplemental logging is not turned on
Error 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 database that is being switched over to be the primary database.
How to Solve :
Check Data Guard broker log for more details. Issue the ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (PRIMARY KEY, UNIQUE INDEX) COLUMNS to add supplemental logging.
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