----------------------------
--dbcc page內(nèi)容解釋
--author:boyi55
----------------------------
dbcc page ( {'dbname' | dbid}, filenum, pagenum [, printopt={0|1|2|3} ])
The printopt parameter has the following meanings:
-
0 - print just the page header
-
1 - page header plus per-row hex dumps and a dump of the page slot array (unless its a page that doesn't have one, like allocation bitmaps)
-
2 - page header plus whole page hex dump
-
3 - page header plus detailed per-row interpretation
=========================
dbcc traceon(3604)
dbcc page(northwind,1,100,1)
go
=========================?
數(shù)據(jù)文件的頁面結(jié)構(gòu)（管理頁面 比較重要）
0?文件頭頁面?1 PFS?頁 面?2 GAM?頁面?3 SGAM?頁面?6 DCM?頁面?7 BCM?頁面
一個GAM?和一個SGAM?可以管理4GB?的數(shù)據(jù)空間
dbcc page(northwind,1,100,1)
go
=========================?
數(shù)據(jù)文件的頁面結(jié)構(gòu)（管理頁面 比較重要）
0?文件頭頁面?1 PFS?頁 面?2 GAM?頁面?3 SGAM?頁面?6 DCM?頁面?7 BCM?頁面
一個GAM?和一個SGAM?可以管理4GB?的數(shù)據(jù)空間
==========================
DBCC?執(zhí)行完畢。如果?DBCC?輸出了錯誤信息，請與系統(tǒng)管理員聯(lián)系。
PAGE: (1:100)
-------------
-------------
BUFFER:
-------
內(nèi)存中頁面的管理信息
-------
內(nèi)存中頁面的管理信息
BUF @0x19217B80--?內(nèi)存中頁號?
---------------
bpage = 0x19A3C000?（對應(yīng)物理 頁面?）? bhash = 0x00000000?（hash?）?bpageno = (1:100)?（對應(yīng)物理文件的頁面號?）
bdbid = 6 (?對應(yīng)的數(shù)據(jù)庫ID?）?????????????? breferences = 0?????????? bstat = 0x9
bspin = 0????????????????????????? bnext = 0x00000000???????
---------------
bpage = 0x19A3C000?（對應(yīng)物理 頁面?）? bhash = 0x00000000?（hash?）?bpageno = (1:100)?（對應(yīng)物理文件的頁面號?）
bdbid = 6 (?對應(yīng)的數(shù)據(jù)庫ID?）?????????????? breferences = 0?????????? bstat = 0x9
bspin = 0????????????????????????? bnext = 0x00000000???????
PAGE HEADER:
------------
頁頭：96?字節(jié)?
Page @0x19A3C000
----------------
m_pageId = (1:100)?（頁號?）?? m_headerVersion = 1?????????????????????? m_type = 1 （數(shù)據(jù)頁類型，1： 堆表和聚集索引的葉子節(jié)點(diǎn)數(shù)據(jù) ）
m_typeFlagBits = 0x0???????? m_level = 0?（索引級別?）????????????????? m_flagBits = 0x8000
m_objId = 2041058307?（對應(yīng)表ID?）? m_indexId = 0??????????????????????? m_prevPage = (0:0)
m_nextPage = (0:0)?????????? pminlen = 8?????????????????????????????? m_slotCnt = 8?（頁面中數(shù)據(jù)的行數(shù)，八行?）
m_freeCnt = 7504?（空余空間?）? m_freeData = 672?（空余空間偏 移量，已用空間數(shù)?）?????? m_reservedCnt = 0
m_lsn = (4:270:16)?????????? m_xactReserved = 0??????????????????????? m_xdesId = (0:0)
m_ghostRecCnt = 0??????????? m_tornBits = 1???????????
------------
頁頭：96?字節(jié)?
Page @0x19A3C000
----------------
m_pageId = (1:100)?（頁號?）?? m_headerVersion = 1?????????????????????? m_type = 1 （數(shù)據(jù)頁類型，1： 堆表和聚集索引的葉子節(jié)點(diǎn)數(shù)據(jù) ）
m_typeFlagBits = 0x0???????? m_level = 0?（索引級別?）????????????????? m_flagBits = 0x8000
m_objId = 2041058307?（對應(yīng)表ID?）? m_indexId = 0??????????????????????? m_prevPage = (0:0)
m_nextPage = (0:0)?????????? pminlen = 8?????????????????????????????? m_slotCnt = 8?（頁面中數(shù)據(jù)的行數(shù)，八行?）
m_freeCnt = 7504?（空余空間?）? m_freeData = 672?（空余空間偏 移量，已用空間數(shù)?）?????? m_reservedCnt = 0
m_lsn = (4:270:16)?????????? m_xactReserved = 0??????????????????????? m_xdesId = (0:0)
m_ghostRecCnt = 0??????????? m_tornBits = 1???????????
Allocation Status
-----------------
GAM (1:2) = ALLOCATED?（管理盤區(qū)位于第三個頁面編號2?）??? SGAM (1:3) = ALLOCATED?（管理混合盤區(qū)位于第四個頁面編號是三??）
PFS (1:1) = 0x60 MIXED_EXT ALLOCATED?? 0_PCT_FULL?? DIFF (1:6) = CHANGED
ML (1:7) = NOT MIN_LOGGED
-----------------
GAM (1:2) = ALLOCATED?（管理盤區(qū)位于第三個頁面編號2?）??? SGAM (1:3) = ALLOCATED?（管理混合盤區(qū)位于第四個頁面編號是三??）
PFS (1:1) = 0x60 MIXED_EXT ALLOCATED?? 0_PCT_FULL?? DIFF (1:6) = CHANGED
ML (1:7) = NOT MIN_LOGGED
DATA:
-----
-----
Slot 0, Offset 0x60
-------------------
Record Type = PRIMARY_RECORD????????????????????????
Record Attributes =? NULL_BITMAP VARIABLE_COLUMNS???
19a3c060:? 00080030? 00000001? 03000004? 35002500 0............%.5
19a3c070:? 42804580? 76006500? 72006500? 67006100 .E.B.e.v.e.r.a.g
19a3c080:? 73006500? 87000000? 00000000? 00005f00 .e.s........._..
19a3c090:? 01000100? 88000000? 00000000? 00005f00 ............._..
19a3c0a0:? 03000100??????? 00???????????????????? .....
-------------------
Record Type = PRIMARY_RECORD????????????????????????
Record Attributes =? NULL_BITMAP VARIABLE_COLUMNS???
19a3c060:? 00080030? 00000001? 03000004? 35002500 0............%.5
19a3c070:? 42804580? 76006500? 72006500? 67006100 .E.B.e.v.e.r.a.g
19a3c080:? 73006500? 87000000? 00000000? 00005f00 .e.s........._..
19a3c090:? 01000100? 88000000? 00000000? 00005f00 ............._..
19a3c0a0:? 03000100??????? 00???????????????????? .....
Slot 1, Offset 0xa5
-------------------
Record Type = PRIMARY_RECORD????????????????????????
Record Attributes =? NULL_BITMAP VARIABLE_COLUMNS???
19a3c0a5:? 00080030? 00000002? 03000004? 37002700 0............'.7
19a3c0b5:? 43804780? 6e006f00? 69006400? 65006d00 .G.C.o.n.d.i.m.e
19a3c0c5:? 74006e00? 00007300? 00008900? 5f000000 .n.t.s........._
19a3c0d5:? 01000000? 00000500? 00008a00? 5f000000 ..............._
19a3c0e5:? 01000000??? 000700???????????????????? .......
-------------------
Record Type = PRIMARY_RECORD????????????????????????
Record Attributes =? NULL_BITMAP VARIABLE_COLUMNS???
19a3c0a5:? 00080030? 00000002? 03000004? 37002700 0............'.7
19a3c0b5:? 43804780? 6e006f00? 69006400? 65006d00 .G.C.o.n.d.i.m.e
19a3c0c5:? 74006e00? 00007300? 00008900? 5f000000 .n.t.s........._
19a3c0d5:? 01000000? 00000500? 00008a00? 5f000000 ..............._
19a3c0e5:? 01000000??? 000700???????????????????? .......
Slot 2, Offset 0xec
-------------------
Record Type = PRIMARY_RECORD????????????????????????
Record Attributes =? NULL_BITMAP VARIABLE_COLUMNS???
19a3c0ec:? 00080030? 00000003? 03000004? 39002900 0............).9
19a3c0fc:? 43804980? 6e006f00? 65006600? 74006300 .I.C.o.n.f.e.c.t
19a3c10c:? 6f006900? 73006e00? 8b000000? 00000000 .i.o.n.s........
19a3c11c:? 00005f00? 09000100? 8c000000? 00000000 ._..............
19a3c12c:? 00006900? 01000100??????? 00?????????? .i.......
-------------------
Record Type = PRIMARY_RECORD????????????????????????
Record Attributes =? NULL_BITMAP VARIABLE_COLUMNS???
19a3c0ec:? 00080030? 00000003? 03000004? 39002900 0............).9
19a3c0fc:? 43804980? 6e006f00? 65006600? 74006300 .I.C.o.n.f.e.c.t
19a3c10c:? 6f006900? 73006e00? 8b000000? 00000000 .i.o.n.s........
19a3c11c:? 00005f00? 09000100? 8c000000? 00000000 ._..............
19a3c12c:? 00006900? 01000100??????? 00?????????? .i.......
Slot 3, Offset 0x135
--------------------
Record Type = PRIMARY_RECORD????????????????????????
Record Attributes =? NULL_BITMAP VARIABLE_COLUMNS???
19a3c135:? 00080030? 00000004? 03000004? 3f002f00 0............/.?
19a3c145:? 44804f80? 69006100? 79007200? 50002000 .O.D.a.i.r.y. .P
19a3c155:? 6f007200? 75006400? 74006300? 00007300 .r.o.d.u.c.t.s..
19a3c165:? 00008d00? 5f000000? 01000000? 00000a00 ......._........
19a3c175:? 00008e00? 5f000000? 01000000??? 000b00 ......._.......
--------------------
Record Type = PRIMARY_RECORD????????????????????????
Record Attributes =? NULL_BITMAP VARIABLE_COLUMNS???
19a3c135:? 00080030? 00000004? 03000004? 3f002f00 0............/.?
19a3c145:? 44804f80? 69006100? 79007200? 50002000 .O.D.a.i.r.y. .P
19a3c155:? 6f007200? 75006400? 74006300? 00007300 .r.o.d.u.c.t.s..
19a3c165:? 00008d00? 5f000000? 01000000? 00000a00 ......._........
19a3c175:? 00008e00? 5f000000? 01000000??? 000b00 ......._.......
Slot 4, Offset 0x184
--------------------
Record Type = PRIMARY_RECORD????????????????????????
Record Attributes =? NULL_BITMAP VARIABLE_COLUMNS???
19a3c184:? 00080030? 00000005? 03000004? 3f002f00 0............/.?
19a3c194:? 47804f80? 61007200? 6e006900? 2f007300 .O.G.r.a.i.n.s./
19a3c1a4:? 65004300? 65007200? 6c006100? 00007300 .C.e.r.e.a.l.s..
19a3c1b4:? 00008f00? 5f000000? 01000000? 00000c00 ......._........
19a3c1c4:? 00009000? 6c000000? 01000000??? 000100 .......l.......
--------------------
Record Type = PRIMARY_RECORD????????????????????????
Record Attributes =? NULL_BITMAP VARIABLE_COLUMNS???
19a3c184:? 00080030? 00000005? 03000004? 3f002f00 0............/.?
19a3c194:? 47804f80? 61007200? 6e006900? 2f007300 .O.G.r.a.i.n.s./
19a3c1a4:? 65004300? 65007200? 6c006100? 00007300 .C.e.r.e.a.l.s..
19a3c1b4:? 00008f00? 5f000000? 01000000? 00000c00 ......._........
19a3c1c4:? 00009000? 6c000000? 01000000??? 000100 .......l.......
Slot 5, Offset 0x1d3
--------------------
Record Type = PRIMARY_RECORD????????????????????????
Record Attributes =? NULL_BITMAP VARIABLE_COLUMNS???
19a3c1d3:? 00080030? 00000006? 03000004? 3b002b00 0............+.;
19a3c1e3:? 4d804b80? 61006500? 2f007400? 6f005000 .K.M.e.a.t./.P.o
19a3c1f3:? 6c007500? 72007400? 00007900? 00009100 .u.l.t.r.y......
19a3c203:? 69000000? 01000000? 00000400? 00009200 ...i............
19a3c213:? 69000000? 01000000??? 000500?????????? ...i.......
--------------------
Record Type = PRIMARY_RECORD????????????????????????
Record Attributes =? NULL_BITMAP VARIABLE_COLUMNS???
19a3c1d3:? 00080030? 00000006? 03000004? 3b002b00 0............+.;
19a3c1e3:? 4d804b80? 61006500? 2f007400? 6f005000 .K.M.e.a.t./.P.o
19a3c1f3:? 6c007500? 72007400? 00007900? 00009100 .u.l.t.r.y......
19a3c203:? 69000000? 01000000? 00000400? 00009200 ...i............
19a3c213:? 69000000? 01000000??? 000500?????????? ...i.......
Slot 6, Offset 0x21e
--------------------
Record Type = PRIMARY_RECORD????????????????????????
Record Attributes =? NULL_BITMAP VARIABLE_COLUMNS???
19a3c21e:? 00080030? 00000007? 03000004? 31002100 0............!.1
19a3c22e:? 50804180? 6f007200? 75006400? 65006300 .A.P.r.o.d.u.c.e
19a3c23e:? 93000000? 00000000? 00006900? 06000100 .........i......
19a3c24e:? 94000000? 00000000? 00007200? 01000100 .........r......
19a3c25e:??????? 00?????????????????????????????? .
--------------------
Record Type = PRIMARY_RECORD????????????????????????
Record Attributes =? NULL_BITMAP VARIABLE_COLUMNS???
19a3c21e:? 00080030? 00000007? 03000004? 31002100 0............!.1
19a3c22e:? 50804180? 6f007200? 75006400? 65006300 .A.P.r.o.d.u.c.e
19a3c23e:? 93000000? 00000000? 00006900? 06000100 .........i......
19a3c24e:? 94000000? 00000000? 00007200? 01000100 .........r......
19a3c25e:??????? 00?????????????????????????????? .
Slot 7, Offset 0x25f
--------------------
Record Type = PRIMARY_RECORD????????????????????????
Record Attributes =? NULL_BITMAP VARIABLE_COLUMNS???
19a3c25f:? 00080030? 00000008? 03000004? 31002100 0............!.1
19a3c26f:? 53804180? 61006500? 6f006600? 64006f00 .A.S.e.a.f.o.o.d
19a3c27f:? 95000000? 00000000? 00006900? 07000100 .........i......
19a3c28f:? 96000000? 00000000? 00006900? 08000100 .........i......
19a3c29f:??????? 00?????????????????????????????? .
--------------------
Record Type = PRIMARY_RECORD????????????????????????
Record Attributes =? NULL_BITMAP VARIABLE_COLUMNS???
19a3c25f:? 00080030? 00000008? 03000004? 31002100 0............!.1
19a3c26f:? 53804180? 61006500? 6f006600? 64006f00 .A.S.e.a.f.o.o.d
19a3c27f:? 95000000? 00000000? 00006900? 07000100 .........i......
19a3c28f:? 96000000? 00000000? 00006900? 08000100 .........i......
19a3c29f:??????? 00?????????????????????????????? .
OFFSET TABLE:
-------------
Row - Offset???96?（頁頭）+?（672-96?）（數(shù)據(jù)空間）+7504?（空余空間）+16?（行偏移指針數(shù)組）=8192?（頁面大小）
8190-8191 slot0
...
...???行偏移數(shù)組
8176-8177 slot7
672-8175?空余空間??????????
7 (0x7) - 607 (0x25f) 607-671????
6 (0x6) - 542 (0x21e) 542-606????
5 (0x5) - 467 (0x1d3) 467-541????
4 (0x4) - 388 (0x184) 388-466????
3 (0x3) - 309 (0x135) 309-387????
2 (0x2) - 236 (0xec)? 236-308
1 (0x1) - 165 (0xa5)? 165-235????
0 (0x0) - 96 (0x60)?? 96-164
0-95 pageheader
DBCC?執(zhí)行完畢。如果?DBCC?輸出了錯誤信息，請與系統(tǒng)管理員聯(lián)系。
============================================
-------------
Row - Offset???96?（頁頭）+?（672-96?）（數(shù)據(jù)空間）+7504?（空余空間）+16?（行偏移指針數(shù)組）=8192?（頁面大小）
8190-8191 slot0
...
...???行偏移數(shù)組
8176-8177 slot7
672-8175?空余空間??????????
7 (0x7) - 607 (0x25f) 607-671????
6 (0x6) - 542 (0x21e) 542-606????
5 (0x5) - 467 (0x1d3) 467-541????
4 (0x4) - 388 (0x184) 388-466????
3 (0x3) - 309 (0x135) 309-387????
2 (0x2) - 236 (0xec)? 236-308
1 (0x1) - 165 (0xa5)? 165-235????
0 (0x0) - 96 (0x60)?? 96-164
0-95 pageheader
DBCC?執(zhí)行完畢。如果?DBCC?輸出了錯誤信息，請與系統(tǒng)管理員聯(lián)系。
============================================
create table demodb1..table10(
id int not null,
name char(5) not null,
address char(10) null)
id int not null,
name char(5) not null,
address char(10) null)
select * from demodb1..sysindexes
where id=object_id('demodb1..table10')
============================================
id????????? status????? first????????? indid? root?????????? minlen keycnt groupid dpages????? reserved??? used??????? rowcnt?????????????? rowmodctr?? reserved3 reserved4 xmaxlen maxirow OrigFillFactor StatVersion reserved2?? FirstIAM?????? impid? lockflags pgmodctr??? keys?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? name???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? statblob???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? maxlen????? rows????????
----------- ----------- -------------- ------ -------------- ------?
1977058079? 0?????????? 0x000000000000 0????? 0x000000000000 23???? 0????? 1?????? 0?????????? 0?????????? 0?????????? 0??????????????????? 0?????????? 0???????? 0???????? 40????? 0?????? 0????????????? 0?????????? 0?????????? 0x000000000000 -1???? 0???????? 0?????????? NULL?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? table10????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? NULL???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? 8000??????? 0
無數(shù)據(jù)?first?為指向第一列或者根頁的指針。
where id=object_id('demodb1..table10')
============================================
id????????? status????? first????????? indid? root?????????? minlen keycnt groupid dpages????? reserved??? used??????? rowcnt?????????????? rowmodctr?? reserved3 reserved4 xmaxlen maxirow OrigFillFactor StatVersion reserved2?? FirstIAM?????? impid? lockflags pgmodctr??? keys?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? name???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? statblob???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? maxlen????? rows????????
----------- ----------- -------------- ------ -------------- ------?
1977058079? 0?????????? 0x000000000000 0????? 0x000000000000 23???? 0????? 1?????? 0?????????? 0?????????? 0?????????? 0??????????????????? 0?????????? 0???????? 0???????? 40????? 0?????? 0????????????? 0?????????? 0?????????? 0x000000000000 -1???? 0???????? 0?????????? NULL?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? table10????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? NULL???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? 8000??????? 0
無數(shù)據(jù)?first?為指向第一列或者根頁的指針。
=============================================
insert into demodb1..table10(id,name,address)values(1,'abcde','suzhou')
=================================
id????????? status????? first????????? indid? root?????????? minlen keycnt groupid dpages????? reserved??? used??????? rowcnt?????????????? rowmodctr?? reserved3 reserved4 xmaxlen maxirow OrigFillFactor StatVersion reserved2?? FirstIAM?????? impid? lockflags pgmodctr??? keys?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? name???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? statblob???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? maxlen????? rows????????
----------- ----------- -------------- ------ -------------- ------ ------??
1977058079? 0???????????0x0F0000000100?0????? 0x0F0000000100 23???? 0????? 1?????? 1?????????? 2?????????? 2?????????? 1??????????????????? 1?????????? 0???????? 0???????? 40????? 0?????? 0????????????? 0?????????? 0?????????? 0x190000000100 -1???? 0???????? 0?????????? NULL?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? table10????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? NULL???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? 8000??????? 1
=================================
id????????? status????? first????????? indid? root?????????? minlen keycnt groupid dpages????? reserved??? used??????? rowcnt?????????????? rowmodctr?? reserved3 reserved4 xmaxlen maxirow OrigFillFactor StatVersion reserved2?? FirstIAM?????? impid? lockflags pgmodctr??? keys?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? name???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? statblob???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? maxlen????? rows????????
----------- ----------- -------------- ------ -------------- ------ ------??
1977058079? 0???????????0x0F0000000100?0????? 0x0F0000000100 23???? 0????? 1?????? 1?????????? 2?????????? 2?????????? 1??????????????????? 1?????????? 0???????? 0???????? 40????? 0?????? 0????????????? 0?????????? 0?????????? 0x190000000100 -1???? 0???????? 0?????????? NULL?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? table10????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? NULL???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? 8000??????? 1
first 0x0F?編號十五頁
=================================
create table table11(id int,name text)
create table table11(id int,name text)
select * from demodb1..sysindexes
where id=object_id('demodb1..table11')
where id=object_id('demodb1..table11')
insert into demodb1..table11 values(1,'boyi55')
=================================
id????????? status????? first????????? indid? root?????????? minlen keycnt groupid dpages????? reserved??? used??????? rowcnt?????????????? rowmodctr?? reserved3 reserved4 xmaxlen maxirow OrigFillFactor StatVersion reserved2?? FirstIAM?????? impid? lockflags pgmodctr??? keys?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? name???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? statblob???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? maxlen????? rows????????
----------- ----------- -------------- ------ -------------- ------??
1993058136? 0???????????0x1E0000000100?0????? 0x1E0000000100 8????? 0????? 1?????? 1?????????? 2?????????? 2?????????? 1??????????????????? 1?????????? 0???????? 0???????? 43????? 0?????? 0????????????? 0?????????? 0?????????? 0x1F0000000100 -1???? 0???????? 0?????????? NULL?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? table11????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? NULL???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? 8000??????? 1
1993058136? 2???????????0x1C0000000100?255??? 0x1C0000000100 0????? 0????? 1?????? 0?????????? 2?????????? 2?????????? 0??????????????????? 0?????????? 0???????? 0???????? 0?????? 0?????? 0????????????? 0?????????? 0?????????? 0x1D0000000100 -1???? 0???????? 0?????????? NULL?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? ttable11???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? NULL???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? 8000??????? 0
first 0x1E?編號三十頁
first 0x1C?編號二十八頁
id????????? status????? first????????? indid? root?????????? minlen keycnt groupid dpages????? reserved??? used??????? rowcnt?????????????? rowmodctr?? reserved3 reserved4 xmaxlen maxirow OrigFillFactor StatVersion reserved2?? FirstIAM?????? impid? lockflags pgmodctr??? keys?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? name???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? statblob???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? maxlen????? rows????????
----------- ----------- -------------- ------ -------------- ------??
1993058136? 0???????????0x1E0000000100?0????? 0x1E0000000100 8????? 0????? 1?????? 1?????????? 2?????????? 2?????????? 1??????????????????? 1?????????? 0???????? 0???????? 43????? 0?????? 0????????????? 0?????????? 0?????????? 0x1F0000000100 -1???? 0???????? 0?????????? NULL?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? table11????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? NULL???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? 8000??????? 1
1993058136? 2???????????0x1C0000000100?255??? 0x1C0000000100 0????? 0????? 1?????? 0?????????? 2?????????? 2?????????? 0??????????????????? 0?????????? 0???????? 0???????? 0?????? 0?????? 0????????????? 0?????????? 0?????????? 0x1D0000000100 -1???? 0???????? 0?????????? NULL?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? ttable11???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? NULL???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? 8000??????? 0
first 0x1E?編號三十頁
first 0x1C?編號二十八頁
=====================
DBCC?執(zhí)行完畢。如果?DBCC?輸出了錯誤信息，請與系統(tǒng)管理員聯(lián)系。
PAGE: (1:30)
------------
------------
BUFFER:
-------
-------
BUF @0x192192C0
---------------
bpage = 0x19AF6000??????? bhash = 0x00000000??????? bpageno = (1:30)
bdbid = 7???????????????? breferences = 1?????????? bstat = 0xb
bspin = 0???????????????? bnext = 0x00000000???????
---------------
bpage = 0x19AF6000??????? bhash = 0x00000000??????? bpageno = (1:30)
bdbid = 7???????????????? breferences = 1?????????? bstat = 0xb
bspin = 0???????????????? bnext = 0x00000000???????
PAGE HEADER:
------------
------------
Page @0x19AF6000
----------------
m_pageId = (1:30)???????? m_headerVersion = 1?????? m_type = 1
m_typeFlagBits = 0x0????? m_level = 0?????????????? m_flagBits = 0x8000
m_objId = 1993058136????? m_indexId = 0???????????? m_prevPage = (0:0)
m_nextPage = (0:0)??????? pminlen = 8?????????????? m_slotCnt = 1
m_freeCnt = 8063????????? m_freeData = 127????????? m_reservedCnt = 0
m_lsn = (5:49:1)????????? m_xactReserved = 0??????? m_xdesId = (0:0)
m_ghostRecCnt = 0???????? m_tornBits = 0???????????
----------------
m_pageId = (1:30)???????? m_headerVersion = 1?????? m_type = 1
m_typeFlagBits = 0x0????? m_level = 0?????????????? m_flagBits = 0x8000
m_objId = 1993058136????? m_indexId = 0???????????? m_prevPage = (0:0)
m_nextPage = (0:0)??????? pminlen = 8?????????????? m_slotCnt = 1
m_freeCnt = 8063????????? m_freeData = 127????????? m_reservedCnt = 0
m_lsn = (5:49:1)????????? m_xactReserved = 0??????? m_xdesId = (0:0)
m_ghostRecCnt = 0???????? m_tornBits = 0???????????
Allocation Status
-----------------
GAM (1:2) = ALLOCATED???? SGAM (1:3) = ALLOCATED????
PFS (1:1) = 0x61 MIXED_EXT ALLOCATED? 50_PCT_FULL?? DIFF (1:6) = CHANGED
ML (1:7) = NOT MIN_LOGGED
-----------------
GAM (1:2) = ALLOCATED???? SGAM (1:3) = ALLOCATED????
PFS (1:1) = 0x61 MIXED_EXT ALLOCATED? 50_PCT_FULL?? DIFF (1:6) = CHANGED
ML (1:7) = NOT MIN_LOGGED
Slot 0 Offset 0x60
------------------
Record Type = PRIMARY_RECORD????????????????????????
Record Attributes =? NULL_BITMAP VARIABLE_COLUMNS???
19af6060:? 00080030? 00000001? 01000002? 00801f00 0...............
19af6070:? 0000c900? 1c000000? 01000000??? 000000 ...............
id?????????????????????????????? = 1???????????????
------------------
Record Type = PRIMARY_RECORD????????????????????????
Record Attributes =? NULL_BITMAP VARIABLE_COLUMNS???
19af6060:? 00080030? 00000001? 01000002? 00801f00 0...............
19af6070:? 0000c900? 1c000000? 01000000??? 000000 ...............
id?????????????????????????????? = 1???????????????
name???????????????????????????? = [TextPointer]
------------------------------------------------
TextTimeStamp = 13172736? RowId = (1:28:0)?
指針指向頁號28.?
------------------------------------------------
TextTimeStamp = 13172736? RowId = (1:28:0)?
指針指向頁號28.?
DBCC?執(zhí)行完畢。如果?DBCC?輸出了錯誤信息，請與系統(tǒng)管理員聯(lián)系。
==============================
sp_tableoption table11,'text in row',1000
==============================
sp_tableoption table11,'text in row',1000
update table11 set name='boyi55555' where id =1
?
DBCC?執(zhí)行完畢。如果?DBCC?輸出了錯誤信息，請與系統(tǒng)管理員聯(lián)系。
PAGE: (1:30)
------------
------------
BUFFER:
-------
-------
BUF @0x192192C0
---------------
bpage = 0x19AF6000??????? bhash = 0x00000000??????? bpageno = (1:30)
bdbid = 7???????????????? breferences = 4?????????? bstat = 0xb
bspin = 0???????????????? bnext = 0x00000000???????
---------------
bpage = 0x19AF6000??????? bhash = 0x00000000??????? bpageno = (1:30)
bdbid = 7???????????????? breferences = 4?????????? bstat = 0xb
bspin = 0???????????????? bnext = 0x00000000???????
PAGE HEADER:
------------
------------
Page @0x19AF6000
----------------
m_pageId = (1:30)???????? m_headerVersion = 1?????? m_type = 1
m_typeFlagBits = 0x0????? m_level = 0?????????????? m_flagBits = 0x8000
m_objId = 1993058136????? m_indexId = 0???????????? m_prevPage = (0:0)
m_nextPage = (0:0)??????? pminlen = 8?????????????? m_slotCnt = 1
m_freeCnt = 8070????????? m_freeData = 127????????? m_reservedCnt = 7
m_lsn = (5:52:5)????????? m_xactReserved = 7??????? m_xdesId = (0:188)
m_ghostRecCnt = 0???????? m_tornBits = 0???????????
----------------
m_pageId = (1:30)???????? m_headerVersion = 1?????? m_type = 1
m_typeFlagBits = 0x0????? m_level = 0?????????????? m_flagBits = 0x8000
m_objId = 1993058136????? m_indexId = 0???????????? m_prevPage = (0:0)
m_nextPage = (0:0)??????? pminlen = 8?????????????? m_slotCnt = 1
m_freeCnt = 8070????????? m_freeData = 127????????? m_reservedCnt = 7
m_lsn = (5:52:5)????????? m_xactReserved = 7??????? m_xdesId = (0:188)
m_ghostRecCnt = 0???????? m_tornBits = 0???????????
Allocation Status
-----------------
GAM (1:2) = ALLOCATED???? SGAM (1:3) = ALLOCATED????
PFS (1:1) = 0x61 MIXED_EXT ALLOCATED? 50_PCT_FULL?? DIFF (1:6) = CHANGED
ML (1:7) = NOT MIN_LOGGED
-----------------
GAM (1:2) = ALLOCATED???? SGAM (1:3) = ALLOCATED????
PFS (1:1) = 0x61 MIXED_EXT ALLOCATED? 50_PCT_FULL?? DIFF (1:6) = CHANGED
ML (1:7) = NOT MIN_LOGGED
Slot 0 Offset 0x60
------------------
Record Type = PRIMARY_RECORD????????????????????????
Record Attributes =? NULL_BITMAP VARIABLE_COLUMNS???
19af6060:? 00080030? 00000001? 01000002? 62001800 0..............b
19af6070:? 3569796f? 35353535???????????????????? oyi55555
id?????????????????????????????? = 1????????????????
********************************************************
name???????????????????????????? = [BLOB Inline Data]
-----------------------------------------------------
19af606f:? 69796f62? 35353535??????? 35?????????? boyi55555?
DBCC?執(zhí)行完畢。如果?DBCC?輸出了錯誤信息，請與系統(tǒng)管理員聯(lián)系。
------------------
Record Type = PRIMARY_RECORD????????????????????????
Record Attributes =? NULL_BITMAP VARIABLE_COLUMNS???
19af6060:? 00080030? 00000001? 01000002? 62001800 0..............b
19af6070:? 3569796f? 35353535???????????????????? oyi55555
id?????????????????????????????? = 1????????????????
********************************************************
name???????????????????????????? = [BLOB Inline Data]
-----------------------------------------------------
19af606f:? 69796f62? 35353535??????? 35?????????? boyi55555?
DBCC?執(zhí)行完畢。如果?DBCC?輸出了錯誤信息，請與系統(tǒng)管理員聯(lián)系。
=============================================
DBCC EXTENTINFO?得到屬于一個對象的所有盤區(qū)的列表
dbcc traceon(3604)
dbcc extentinfo(northwind,categories)
DBCC EXTENTINFO?得到屬于一個對象的所有盤區(qū)的列表
dbcc traceon(3604)
dbcc extentinfo(northwind,categories)
DBCC?執(zhí)行完畢。如果?DBCC?輸出了錯誤信息，請與系統(tǒng)管理員聯(lián)系。
file_id???? page_id???? pg_alloc??? ext_size??? obj_id????? index_id??? pfs_bytes??????????
----------- ----------- ----------- ----------- ----------- ----------- ------------------?
1?????????? 98????????? 1?????????? 1?????????? 2041058307? 1?????????? 0x6000000000000000
1?????????? 100???????? 1?????????? 1?????????? 2041058307? 1?????????? 0x6000000000000000
1?????????? 389???????? 1?????????? 1?????????? 2041058307? 2?????????? 0x6000000000000000
1?????????? 95????????? 1?????????? 1?????????? 2041058307? 255???????? 0x6200000000000000
1?????????? 97????????? 1?????????? 1?????????? 2041058307? 255???????? 0x6400000000000000
1?????????? 103???????? 1?????????? 1?????????? 2041058307? 255???????? 0x6400000000000000
1?????????? 104???????? 1?????????? 1?????????? 2041058307? 255???????? 0x6400000000000000
1?????????? 105???????? 1?????????? 1?????????? 2041058307? 255???????? 0x6200000000000000
1?????????? 106???????? 1?????????? 1?????????? 2041058307? 255???????? 0x6400000000000000
1?????????? 107???????? 1?????????? 1?????????? 2041058307? 255???????? 0x6400000000000000
1?????????? 108???????? 1?????????? 1?????????? 2041058307? 255???????? 0x6200000000000000
1?????????? 112???????? 4?????????? 8?????????? 2041058307? 255???????? 0x4444424400000000
（所影響的行數(shù)為?12?行）
DBCC?執(zhí)行完畢。如果?DBCC?輸出了錯誤信息，請與系統(tǒng)管理員聯(lián)系。
page_id?對應(yīng)于obj_id
dbcc traceon(3604)
dbcc extentinfo(northwind)
用法：DBCC EXTENTINFO(dbname,tablename,indexid)
from csdn? http://blog.csdn.net/laohan8848/archive/2010/05/25/5622166.aspx
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