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Memory_TopSegmentsInBufferPools.sql

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SELECT /*+ OPT_PARAM ('_COMPLEX_VIEW_MERGING', 'FALSE') OPT_PARAM('_PUSH_JOIN_UNION_VIEW', 'FALSE')
OPT_PARAM ('_OPTIMIZER_NEW_JOIN_CARD_COMPUTATION', 'FALSE') */
NULL INST, NULL OWNER, NULL SEGMENT_NAME, NULL PART_NAME, NULL SEGMENT_TYPE, NULL POOL,
NULL BLKSIZE, NULL POOL_GB, NULL SEG_POOL_MB, NULL "POOL_%",
NULL SEG_DISK_MB, NULL "SEG_CACHED_%", NULL "DIRTY_%", NULL "CR_%"
FROM DUAL WHERE 1 = 0
UNION ALL (
SELECT
NULL INST, NULL OWNER, NULL SEGMENT_NAME, NULL PART_NAME, NULL SEGMENT_TYPE, NULL POOL,
NULL BLKSIZE, NULL POOL_GB, NULL SEG_POOL_MB, NULL "POOL_%",
NULL SEG_DISK_MB, NULL "SEG_CACHED_%", NULL "DIRTY_%", NULL "CR_%"
FROM DUAL WHERE 1 = 0
) UNION ALL ( SELECT * FROM (
WITH BASIS_INFO AS
( SELECT /*+ MATERIALIZE */
DECODE(INSTANCE_NUMBER, -1, USERENV('INSTANCE'), INSTANCE_NUMBER) INSTANCE_NUMBER,
OWNER,
SEGMENT_NAME,
BUFFER_POOL,
SEGMENT_TYPE,
BLOCK_SIZE,
NUM_RECORDS
FROM
( SELECT
-1 INSTANCE_NUMBER,
'%' OWNER,
'%' SEGMENT_NAME,
'%' BUFFER_POOL,
'%' SEGMENT_TYPE,
-1 BLOCK_SIZE,
30 NUM_RECORDS
FROM
DUAL
)
),
SEGMENTS AS
( SELECT /*+ MATERIALIZE */
DS.OWNER,
DS.SEGMENT_NAME,
DS.SEGMENT_TYPE,
DS.PARTITION_NAME,
DS.BUFFER_POOL,
DS.TABLESPACE_NAME,
DS.BYTES,
DT.BLOCK_SIZE
FROM
BASIS_INFO SI,
DBA_SEGMENTS DS,
DBA_TABLESPACES DT
WHERE
DS.OWNER LIKE SI.OWNER AND
DS.SEGMENT_NAME LIKE SI.SEGMENT_NAME AND
DS.TABLESPACE_NAME = DT.TABLESPACE_NAME
UNION ALL
( SELECT
'SYS' OWNER,
'Undo data' SEGMENT_NAME,
'UNDO SEGMENT' SEGMENT_TYPE,
NULL PARTITION_NAME,
'DEFAULT' BUFFER_POOL,
MIN(P.VALUE) TABLESPACE_NAME,
SUM(BYTES) BYTES,
MIN(DT.BLOCK_SIZE) BLOCK_SIZE
FROM
BASIS_INFO BI,
DBA_SEGMENTS S,
GV$PARAMETER P,
DBA_TABLESPACES DT
WHERE
P.INST_ID = BI.INSTANCE_NUMBER AND
P.NAME = 'undo_tablespace' AND
DT.TABLESPACE_NAME = P.VALUE AND
S.TABLESPACE_NAME = P.VALUE AND
'Undo data' LIKE BI.SEGMENT_NAME
)
),
OBJECTS AS
( SELECT /*+ MATERIALIZE */
OWNER,
OBJECT_NAME,
SUBOBJECT_NAME,
DATA_OBJECT_ID,
OBJECT_TYPE
FROM
DBA_OBJECTS
UNION ALL
( SELECT
'SYS' OWNER,
'Undo data' OBJECT_NAME,
NULL SUBOBJECT_NAME,
4294967295 DATA_OBJECT_ID,
'UNDO SEGMENT' OBJECT_TYPE
FROM
DUAL
)
),
CACHES AS
( SELECT /*+ MATERIALIZE */
SDC.COMPONENT CACHE_NAME,
SDC.CURRENT_SIZE / 1024 / 1024 POOL_SIZE_MB,
DECODE(SDC.COMPONENT,
'KEEP buffer cache', 'KEEP',
'RECYCLE buffer cache', 'RECYCLE',
'DEFAULT') BUFFER_POOL,
DECODE(SDC.COMPONENT,
'DEFAULT 2K buffer cache', 2048,
'DEFAULT 4K buffer cache', 4096,
'DEFAULT 8K buffer cache', 8192,
'DEFAULT 16K buffer cache', 16384,
'DEFAULT 32K buffer cache', 32768,
B.VALUE) BLOCK_SIZE
FROM
BASIS_INFO BI,
GV$SGA_DYNAMIC_COMPONENTS SDC,
GV$PARAMETER B
WHERE
BI.INSTANCE_NUMBER = SDC.INST_ID AND
BI.INSTANCE_NUMBER = B.INST_ID AND
SDC.COMPONENT IN
( 'DEFAULT buffer cache',
'KEEP buffer cache',
'RECYCLE buffer cache',
'DEFAULT 2K buffer cache',
'DEFAULT 4K buffer cache',
'DEFAULT 8K buffer cache',
'DEFAULT 16K buffer cache',
'DEFAULT 32K buffer cache'
) AND
B.NAME = 'db_block_size'
)
SELECT
'Eva.' INST,
'Time:' OWNER,
TO_CHAR(SYSDATE, 'dd.mm.yyyy hh24:mi:ss') SEGMENT_NAME,
NULL PART_NAME,
NULL SEGMENT_TYPE,
NULL POOL,
NULL BLKSIZE,
NULL POOL_GB,
NULL SEG_POOL_MB,
NULL "POOL_%",
NULL SEG_DISK_MB,
NULL "SEG_CACHED_%",
NULL "DIRTY_%",
NULL "CR_%"
FROM
DUAL
UNION ALL
( SELECT
NULL INST,
NULL OWNER,
NULL SEGMENT_NAME,
NULL PART_NAME,
NULL SEGMENT_TYPE,
NULL POOL,
NULL BLKSIZE,
NULL POOL_GB,
NULL SEG_POOL_MB,
NULL "POOL_%",
NULL SEG_DISK_MB,
NULL "SEG_CACHED_%",
NULL "DIRTY_%",
NULL "CR_%"
FROM
DUAL
)
UNION ALL
( SELECT
INST,
OWNER,
SEGMENT_NAME,
PARTITION_NAME PART_NAME,
SEGMENT_TYPE,
POOL,
BLKSIZE,
POOL_GB,
SEG_POOL_MB,
"POOL_%",
SEG_DISK_MB,
"SEG_CACHED_%",
"DIRTY_%",
"CR_%"
FROM
( SELECT
TO_CHAR(INST_ID, 990) INST,
OWNER,
SEGMENT_NAME,
PARTITION_NAME,
SEGMENT_TYPE,
BUFFER_POOL POOL,
TO_CHAR(BLOCK_SIZE, 999990) BLKSIZE,
TO_CHAR(POOL_SIZE_MB / 1024, 990.99) POOL_GB,
TO_CHAR(BLOCKS * BLOCK_SIZE / 1024 / 1024, 9999990.99) SEG_POOL_MB,
TO_CHAR(DECODE(POOL_SIZE_MB, 0, 0, BLOCKS * BLOCK_SIZE / 1024 / 1024 /
POOL_SIZE_MB * 100), 990.99) "POOL_%",
TO_CHAR(SEG_DISK_BYTE / 1024 / 1024, 9999990.99) SEG_DISK_MB,
TO_CHAR(DECODE(SEG_DISK_BYTE, 0, 0, BLOCKS * BLOCK_SIZE / SEG_DISK_BYTE * 100), 99999990.99) "SEG_CACHED_%",
TO_CHAR(DECODE(BLOCKS, 0, 0, DIRTY_BLOCKS / BLOCKS * 100), 990.99) "DIRTY_%",
TO_CHAR(DECODE(BLOCKS, 0, 0, CR_BLOCKS / BLOCKS * 100), 990.99) "CR_%",
NUM_RECORDS
FROM
( SELECT
BI.INSTANCE_NUMBER INST_ID,
S.OWNER,
S.SEGMENT_NAME,
S.PARTITION_NAME,
S.SEGMENT_TYPE,
S.BYTES SEG_DISK_BYTE,
COUNT(*) BLOCKS,
SUM(DECODE(B.DIRTY, 'Y', 1, 0)) DIRTY_BLOCKS,
SUM(DECODE(B.STATUS, 'cr', 1, 0)) CR_BLOCKS,
C.POOL_SIZE_MB,
C.BUFFER_POOL,
C.BLOCK_SIZE,
ROW_NUMBER() OVER (PARTITION BY O.DATA_OBJECT_ID
ORDER BY O.OBJECT_TYPE) CLUSTRN,
BI.NUM_RECORDS
FROM
SEGMENTS S,
OBJECTS O,
GV$BH B,
CACHES C,
BASIS_INFO BI
WHERE
BI.INSTANCE_NUMBER = B.INST_ID AND
S.OWNER = O.OWNER AND
S.SEGMENT_NAME = O.OBJECT_NAME AND
NVL(S.PARTITION_NAME, ' ') = NVL(O.SUBOBJECT_NAME, ' ') AND
O.DATA_OBJECT_ID = B.OBJD AND
C.BUFFER_POOL LIKE BI.BUFFER_POOL AND
(BI.BLOCK_SIZE = -1 OR C.BLOCK_SIZE = BI.BLOCK_SIZE) AND
S.SEGMENT_TYPE LIKE BI.SEGMENT_TYPE AND
C.BUFFER_POOL = S.BUFFER_POOL AND
C.BLOCK_SIZE = S.BLOCK_SIZE AND
C.POOL_SIZE_MB > 0
GROUP BY
BI.INSTANCE_NUMBER,
S.OWNER,
S.SEGMENT_NAME,
S.PARTITION_NAME,
S.SEGMENT_TYPE,
S.BYTES,
C.POOL_SIZE_MB,
C.BUFFER_POOL,
C.BLOCK_SIZE,
O.DATA_OBJECT_ID,
O.OBJECT_TYPE,
BI.NUM_RECORDS
)
WHERE
CLUSTRN = 1
ORDER BY
BLOCKS DESC
)
WHERE
ROWNUM <= NUM_RECORDS
)
));
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