” The simple answer is that they are very compatible, and map easily.The table below shows an Oracle to Postgre SQL data type comparison and mapping for the most common Oracle types.
This stores all values in UTC, even if the server or db client are in different timezones which avoids a lot of problems.
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It also allows you to downgrade back to the old major version, assuming logical replication is still working properly.
Quicker upgrade switching and the ability to downgrade in case of problems have been frequent feature requests that A common first question during a database migration is “How do Oracle datatypes compare to Postgre SQL?