oracle11g with 临时表不能出现多个union all count(distinct )

Question

这是什么原因 在10g里没有问题

 WITH ABC AS
 (SELECT 1 A
  FROM   DUAL
  UNION ALL
  SELECT 1
  FROM   DUAL
  UNION ALL
  SELECT 1
  FROM   DUAL)
SELECT COUNT(DISTINCT A)
FROM   ABC
UNION ALL
SELECT COUNT(DISTINCT A)
FROM   ABC

Answer 1

在11g中出现的错误是ORA-03113: 通信管道的文件结束