Data missing in reporting views

Question

Hi,
As you can see below in the query, I am trying to report on hourly data (say 9:00 am, 10:00 am, 11:am , 12 pm) of current date time...I am finding data only in the CURRENT and DAILY views (whereas the DETAILS and HOURLY views are empty).
Where do I get the hourly information (not just current hour but for a window of 5-6 hrs from current time) ?
--25 hour period value for Read and write (Disk I/O)
--Details view
SELECT DISTINCT
  A.TARGET_NAME,
  A.TARGET_TYPE,
  A.COLLECTION_TIMESTAMP,
  sum(A.VALUE) AS READ_VALUE,
  sum(B.VALUE) AS WRITE_VALUE
  --A.KEY_VALUE 
FROM
  OEM_COPY.MGMT$METRIC_DETAILS A,
  OEM_COPY.MGMT$METRIC_DETAILS B 
WHERE
       A.TARGET_TYPE = B.TARGET_TYPE
   AND A.TARGET_NAME = B.TARGET_NAME
   AND A.TARGET_GUID = B.TARGET_GUID
   AND A.METRIC_LABEL = B.METRIC_LABEL
   AND TO_CHAR(A.collection_timestamp,'MM/DD/YYYY HH24') = TO_CHAR(B.collection_timestamp,'MM/DD/YYYY HH24')
   AND A.KEY_VALUE = B.KEY_VALUE
   AND A.METRIC_LABEL  In  ( 'Database Files'  )
   AND A.METRIC_COLUMN  In  ( 'write_cs'  )
   AND B.METRIC_COLUMN  In  ( 'read_cs'  )
   AND A.TARGET_TYPE  In  ( 'oracle_database'  )
   AND A.TARGET_NAME IN ('phadmdv')  
GROUP BY
  A.TARGET_NAME,
  A.TARGET_TYPE,
  A.COLLECTION_TIMESTAMP
ORDER BY
  A.TARGET_NAME,
  A.TARGET_TYPE,
  A.COLLECTION_TIMESTAMP
--Current value for Read and write (Disk I/O)
--From hourly table (empty)
SELECT DISTINCT
  C.TARGET_NAME,
  C.TARGET_TYPE,
  C.ROLLUP_TIMESTAMP,
  sum(C.KEY_VALUE) AS READ_VALUE,
  sum(B.KEY_VALUE) AS WRITE_VALUE
  --A.KEY_VALUE 
FROM
  OEM_COPY.MGMT$METRIC_HOURLY C,
  OEM_COPY.MGMT$METRIC_HOURLY B 
WHERE
       C.TARGET_TYPE = B.TARGET_TYPE
   AND C.TARGET_NAME = B.TARGET_NAME
   AND C.TARGET_GUID = B.TARGET_GUID
   AND C.METRIC_LABEL = B.METRIC_LABEL
   AND TO_CHAR(C.ROLLUP_TIMESTAMP,'MM/DD/YYYY HH24') = TO_CHAR(B.ROLLUP_TIMESTAMP,'MM/DD/YYYY HH24')
   AND C.KEY_VALUE = B.KEY_VALUE
   AND C.METRIC_LABEL  In  ( 'Database Files'  )
   AND C.METRIC_COLUMN  In  ( 'write_cs'  )
   AND B.METRIC_COLUMN  In  ( 'read_cs'  )
   AND C.TARGET_TYPE  In  ( 'oracle_database'  )
   AND C.TARGET_NAME IN ('phadmdv')
GROUP BY
  C.TARGET_NAME,
  C.TARGET_TYPE,
  C.ROLLUP_TIMESTAMP
ORDER BY
  C.TARGET_NAME,
  C.TARGET_TYPE,
  C.ROLLUP_TIMESTAMP
--Current value for Read and write (Disk I/O)
--From daily table (ONLY Daily averages)
SELECT DISTINCT
  C.TARGET_NAME,
  C.TARGET_TYPE,
  C.ROLLUP_TIMESTAMP,
  sum(C.AVERAGE) AS READ_VALUE,
  sum(B.AVERAGE) AS WRITE_VALUE
  --A.KEY_VALUE 
FROM
  OEM_COPY.MGMT$METRIC_DAILY C,
  OEM_COPY.MGMT$METRIC_DAILY B 
WHERE
       C.TARGET_TYPE = B.TARGET_TYPE
   AND C.TARGET_NAME = B.TARGET_NAME
   AND C.TARGET_GUID = B.TARGET_GUID
   AND C.METRIC_LABEL = B.METRIC_LABEL
   AND TO_CHAR(C.ROLLUP_TIMESTAMP,'MM/DD/YYYY HH24') = TO_CHAR(B.ROLLUP_TIMESTAMP,'MM/DD/YYYY HH24')
   AND C.KEY_VALUE = B.KEY_VALUE
   AND C.METRIC_LABEL  In  ( 'Database Files'  )
   AND C.METRIC_COLUMN  In  ( 'write_cs'  )
   AND B.METRIC_COLUMN  In  ( 'read_cs'  )
   AND C.TARGET_TYPE  In  ( 'oracle_database'  )
   AND C.TARGET_NAME IN ('phadmdv')
GROUP BY
  C.TARGET_NAME,
  C.TARGET_TYPE,
  C.ROLLUP_TIMESTAMP
ORDER BY
  C.TARGET_NAME,
  C.TARGET_TYPE,
  C.ROLLUP_TIMESTAMPThank you

Answer 1

I dont understand. what you say
you say that these query not returns rows and you need to know in what mgmt table is stored the mentioned information