ORA-12805：并行查询服务器意外死亡

Question

我有一个像这样的PL / SQL脚本......

DECLARE
      CURSOR curs_delete
      IS      
         SELECT cus_num
          FROM dob.cust_table GROUP BY cust_num HAVING COUNT(*)>1;                
      TYPE row_cust_num IS TABLE OF dob.cust_table.cust_num%TYPE;      
      col_cust_num row_cust_num;
   BEGIN
      OPEN curs_delete;
      LOOP
         FETCH curs_delete
         BULK COLLECT INTO col_cust_num LIMIT 10000;
         EXIT WHEN col_cust_num.EXISTS (1) = FALSE;
         FORALL i IN 1 .. col_cust_num.LAST
            DELETE FROM cust_table 
             WHERE cust_num = col_cust_num (i);
             COMMIT;
      END LOOP;
      CLOSE curs_delete;
END;

此查询返回ORA-12805:parallel query server died unexpectedly错误。我不确定为什么会这样。当我收到此错误时，游标中的select查询返回415条记录。

任何人都明白为什么会出现此错误？

Answer 1

这是您的DBA要解决的问题，因为有很多可能的原因。有人需要查看警报日志并检查bdump目录中的跟踪文件以获取诊断信息。

与此同时，如果您只删除415条记录，则应该直接使用SQL：

DELETE FROM cust_table
WHERE cust_num in (SELECT cus_num           
                   FROM dob.cust_table 
                   GROUP BY cust_num HAVING COUNT(*)>1);