If a row is rejected due to an integrity constraint violation or invalid data, then Import displays a warning message but continues processing the rest of the table. Some errors, such as "tablespace full," apply to all subsequent rows in the table. These errors cause Import to stop processing the current table and skip to the next table.
A "tablespace full" error can suspend the import if the
RESUMABLE=y parameter is specified.
Primary key (not null and unique) constraints
Referential integrity constraints