SQL> @?/rdbms/admin/utlu112i.sql
………………
Miscellaneous Warnings
WARNING: --> Database is using a timezone file older than version 14.
.... After the release migration, it is recommended that DBMS_DST package
.... be used to upgrade the 11.2.0.1.0 database timezone version
.... to the latest version which comes with the new release.
在升级模式下执行：
SQL> EXEC DBMS_DST.BEGIN_PREPARE(14);
PL/SQL procedure successfully completed.
SQL> EXEC DBMS_DST.END_PREPARE;
PL/SQL procedure successfully completed.
SQL> EXEC DBMS_DST.BEGIN_UPGRADE(14);
BEGIN DBMS_DST.BEGIN_UPGRADE(14); END;
*
ERROR at line 1:
ORA-00904: "VIRTUAL_COLUMN": invalid identifier
ORA-06512: at "SYS.DBMS_DST", line 113
ORA-06512: at "SYS.DBMS_DST", line 1101
ORA-06512: at line 1
找不到出错的原因，求大侠们帮忙？