Can we downgrade from 19c to 12.1.0 if the compatibility is set to 12.2.0 Team:
Recently i upgraded a 12.1.0 database to 19c (non CDB architecture). Current compatibility is set to 12.2.0. Can I downgrade it to the earlier version - 12.1.0? Documentation states the downgrade is possible but am not sure about the compatibility parameter.
https://docs.oracle.com/en/database/oracle/oracle-database/19/upgrd/downgrading-oracle-db-after-upgrade.html#GUID-59F92E2A-DC4D-46A3-9AC9-63F47BE4A86F
Check for Incompatibilities When Downgrading Oracle Database

If the compatibility level of your Oracle Database 12c database is set
to 12.2.0, then you are not able to downgrade.

You can downgrade to 12.2, but not to 12.1.