impdp ... transform=segment_attributes:n # bypass storage clashes
grep -A 20 "ORA-39126" import.log Typical stack: dump file checksum
If the error persists, contact Oracle Support with the full import log, dump file checksum, and parfile used. dump file checksum
-- Pre-create target table with partitions impdp ... exclude=table_data # import only metadata first -- Then retry with data and TABLE_EXISTS_ACTION=APPEND dump file checksum