ORA-54013 ON FLASHBACK TABLE WITH VIRTUAL COLUMNS

ORA-54013: INSERT operation disallowed on virtual columns

Solution:

Oracle does not support direct flashback on a table with virtual column. the reason for the same is that the values for virtual column are derived rather than being stored on disk and there is no undo for them.

 Virtual column is not officially supported by flashback table feature. ( Including 12c )

Refer Metalink note Doc ID 1943791.1 for more details