select s.snap_id, s.dbid, s.cell_hash, s.incarnation_num,
s.reason_id, nm.reason_name, s.requests, s.bytes,
decode(s.con_dbid, 0, s.dbid, s.con_dbid),
0 con_id
from WRH$_CELL_IOREASON s,
WRH$_CELL_IOREASON_NAME nm,
(select distinct snap_id, dbid
from DBA_HIST_SNAPSHOT) sn
where s.reason_id = nm.reason_id
and s.dbid = nm.dbid
and s.snap_id = sn.snap_id
and s.dbid = sn.dbid
SELECT S.SNAP_ID
, S.DBID
, S.CELL_HASH
, S.INCARNATION_NUM
,
S.REASON_ID
, NM.REASON_NAME
, S.REQUESTS
, S.BYTES
,
DECODE(S.CON_DBID
, 0
, S.DBID
, S.CON_DBID)
,
0 CON_ID
FROM WRH$_CELL_IOREASON S
,
WRH$_CELL_IOREASON_NAME NM
,
(SELECT DISTINCT SNAP_ID
, DBID
FROM DBA_HIST_SNAPSHOT) SN
WHERE S.REASON_ID = NM.REASON_ID
AND S.DBID = NM.DBID
AND S.SNAP_ID = SN.SNAP_ID
AND S.DBID = SN.DBID
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