How to fix the Oracle error IMP-00079: Warning: National character set data in this table may be incorrect?

In this post, you’ll learn more about the Oracle ErrorIMP-00079: Warning: National character set data in this table may be incorrect with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

IMP-00079: Warning: National character set data in this table may be incorrect

Reason for the Error IMP-00079: Warning: National character set data in this table may be incorrect

Due to a problem in 8.0.2 Export, national character data in NCHAR and NVARCHAR2 columns was incorrectly assumed to be in the export server’s data base character set and was converted to the export client’s data base character set. This conversion would only be correct if the export server’s data base character set was the same as the export server’s national character set and the export client’s data base character set was the same as the export client’s national character set. All other combinations would likely be incorrect. This export dump file was generated by 8.0.2 Export and the export client and server characater sets did not fit that criteria.

How to fix the Error IMP-00079: Warning: National character set data in this table may be incorrect ?

You can fix this error in Oracle by following the below steps

Examine the national character data. If incorrect, update the data with correct data.