ORA-30036 UNDOTBS1

Question

SQL> declare
  2  num float(10);
  3  begin
  4  num:=1;
  5  loop
  6  insert into integer values(num);
  7  num:= num+1;
  8  exit when num>99999;
  9  end loop;
 10  end;
 11  /

 ERROR at line 1:
 ORA-30036: unable to extend segment by 8 in undo tablespace 'UNDOTBS1'
 ORA-06512: at line 6

这是什么ORA-30036错误以及如何解决它。我正在运行oracle plsql过程。有人可以找到解决方案。