In this post, you’ll learn more about the Oracle ErrorORA-03278: duplicate ALLOCATE EXTENT option specification with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-03278: duplicate ALLOCATE EXTENT option specification
Reason for the Error ORA-03278: duplicate ALLOCATE EXTENT option specification
An option (DATAFILE, SIZE or INSTANCE) was specified more than once.
How to fix the Error ORA-03278: duplicate ALLOCATE EXTENT option specification ?
You can fix this error in Oracle by following the below steps
Specify each option at most once.