解決：ORA-01552 :非系統表空間 'xxxx'不能使用系統回退段 問題

SQL> select open_mode from v$database;

SQL> show parameter undo

SQL> alter system set undo_management=auto scope=spfile;

SQL> shutdown immediate

SQL> startup

SQL> shutdown abort

SQL> conn /as sysdba

SQL> startup mount

SQL> show parameter undo

SQL> alter system set undo_management=manual scope=spfile;

SQL> shutdown immediate;

SQL> startup

SQL> select name from v$datafile;

SQL> create undo tablespace undotbs2 datafile 'E:\ORACLE\PRODUCT\10.2.0\ORADATA\

ORACLE\UNDOTBS02.dbf' size 200m;

SQL> show parameter undo;

SQL> alter system set undo_tablespace=undotbs2 scope=spfile;

SQL> alter system set undo_management=auto scope=spfile;

SQL> show parameter spfile;

SQL> shutdown immediate;

SQL> startup

SQL> show parameter undo