删除表空间的时候无法删除

[dctg2003]

drop tablespace AKKSS INCLUDING CONTENTS

ORA-00604: 递归 SQL 层 1 出现错误
ORA-02429: 无法删除用于强制唯一/主键的索引

请问如何删除啊

[dctg2003]

我是9I的版本

[bobfang]

drop tablespace AKKSS INCLUDING CONTENTS cascade;

[bobfang]

drop tablespace AKKSS INCLUDING CONTENTS cascade constraints;