begin DBMS_STATS.gather_table_stats (ownname => 'OWNER',tabname => 'TABLE_EXT'); end;

[Error] Execution (3: 1): ORA-29913: error in executing ODCIEXTTABLEOPEN callout
ORA-29400: data cartridge error
KUP-04084: The ORACLE_DATAPUMP access driver does not support the ROWID column.
ORA-06512: at "SYS.DBMS_STATS", line 23829
ORA-06512: at "SYS.DBMS_STATS", line 23880
ORA-06512: at line 1

CREATE TABLE TABLE_EXT
(
...
)
ORGANIZATION EXTERNAL
  (  TYPE ORACLE_DATAPUMP
     DEFAULT DIRECTORY PATH1
     ACCESS PARAMETERS 
       (  )
     LOCATION (PATH1:'file.dmp')
  )
REJECT LIMIT 0
NOPARALLEL
NOMONITORING;