Oracle® Database 11g / 12c / 18c error codes ORA-54004: resultant data type of virtual column is not supported

ORA-54004: resultant data type of virtual column is not supported

Oracle Error Code: ORA-54004

Cause: The data type of the underlying expression is not supported. Only scalar data types are supported for virtual columns. LONG, BLOB, REF, and BFILE data types are not supported for virtual columns.

Action: Specify the expression of virtual column to return a supported scalar data type.