Oracle-Sql Error

Question

select Cnt1/Sum1*100
from (
SELECT count(*) AS Cnt1
FROM tsau_pre_msges
WHERE ( (EXTRACT (DAY FROM Jms_timestamp)-EXTRACT (DAY FROM ins_time))*24*60
+ (EXTRACT (HOUR FROM Jms_timestamp)-EXTRACT (HOUR FROM ins_time))*60
+ EXTRACT (MINUTE FROM Jms_timestamp)-EXTRACT (MINUTE FROM ins_time)
) BETWEEN 1 AND 5 ),
( select sum ( (EXTRACT (DAY FROM Jms_timestamp)-EXTRACT (DAY FROM ins_time))*24*60
+ (EXTRACT (HOUR FROM Jms_timestamp)-EXTRACT (HOUR FROM ins_time))*60
+ EXTRACT (MINUTE FROM Jms_timestamp)-EXTRACT (MINUTE FROM ins_time)
) Sum1 from tsau_pre_msges where portcode=10)
Error:missing right paranthesis ,but i have never miss any paranthesis over here

Answer 1

You have too many brackets, you are bracketting your seperate subqueries into one entity which can't be selected "from"...
i.e. you have:
select Cnt1/Sum1*100
from (
        SELECT count(*) AS Cnt1
        FROM   tsau_pre_msges
        WHERE (
                (EXTRACT (DAY FROM Jms_timestamp)-EXTRACT (DAY FROM ins_time))*24*60
              + (EXTRACT (HOUR FROM Jms_timestamp)-EXTRACT (HOUR FROM ins_time))*60
              + EXTRACT (MINUTE FROM Jms_timestamp)-EXTRACT (MINUTE FROM ins_time)
              ) BETWEEN 1 AND 5
       ( select sum ( (EXTRACT (DAY FROM Jms_timestamp)-EXTRACT (DAY FROM ins_time))*24*60
                    + (EXTRACT (HOUR FROM Jms_timestamp)-EXTRACT (HOUR FROM ins_time))*60
                    + EXTRACT (MINUTE FROM Jms_timestamp)-EXTRACT (MINUTE FROM ins_time)
                    ) Sum1
         from tsau_pre_msges where portcode=10
    ) and you should have something like...
select Cnt1/Sum1*100
from (SELECT count(*) AS Cnt1
      FROM   tsau_pre_msges
      WHERE (
              (EXTRACT (DAY FROM Jms_timestamp)-EXTRACT (DAY FROM ins_time))*24*60
            + (EXTRACT (HOUR FROM Jms_timestamp)-EXTRACT (HOUR FROM ins_time))*60
            + EXTRACT (MINUTE FROM Jms_timestamp)-EXTRACT (MINUTE FROM ins_time)
            ) BETWEEN 1 AND 5
     (select sum ( (EXTRACT (DAY FROM Jms_timestamp)-EXTRACT (DAY FROM ins_time))*24*60
                 + (EXTRACT (HOUR FROM Jms_timestamp)-EXTRACT (HOUR FROM ins_time))*60
                 + EXTRACT (MINUTE FROM Jms_timestamp)-EXTRACT (MINUTE FROM ins_time)
                 ) Sum1
      from tsau_pre_msges where portcode=10
     )