hello Huawei ！I get an EXP-00003 error when I use the oracle EXP tool to import data, please help me locate the issue

hello dear



When using EXP to export data by user in ORACLE, some user tables will have an error of ‘EXP-00003: no storage definition found for segment...’ and the table data export fails.
The EXP-00003: no storage definition found for segment .... error appears in the EXP log table, and the data export of the table with this error fails.
The problem is caused by a bug in ORACLE, and the view exu9tne needs to be modified
Execute the following statement:
CREATE OR REPLACE VIEW exu9tne
(tsno, fileno, blockno, length)
AS SELECT ts#, segfile#, segblock#, lengthFROM sys.uet$
WHERE ext# = 1
UNION ALL
SELECT * FROM SYS.EXU9TNEB/
Then export the data through the EXP tool can be successful
Then execute
CREATE OR REPLACE VIEW exu9tne
(tsno, fileno, blockno, length)
AS SELECT ts#, segfile#, segblock#, lengthFROM sys.uet$
WHERE ext# = 1
Restore the view back.