查看操作系統(tǒng)塊大小oracle建庫(kù)一般設(shè)置數(shù)據(jù)庫(kù)塊大小8192K，一般是OS塊大小的整數(shù)倍，要避免數(shù)據(jù)庫(kù)塊大小小于系統(tǒng)塊大小的情況。1.在WINDOWS系統(tǒng)上，可以用命令fsutil來(lái)查看，測(cè)試如下：C:\Documents and Settings\administrator>fsutil fsinfo ntfsinfo c:

NTFS卷序列號(hào):?????? 0x72ccb5f2ccb5b129版本:

3.1區(qū)數(shù)量:

0x0000000008ff8235簇總數(shù):

0x00000000011ff046可用簇:

0x0000000000547b73保留總數(shù):

0x0000000000000050每個(gè)扇區(qū)字節(jié)數(shù):

512每個(gè)簇字節(jié)數(shù):

4096每個(gè)FileRecord段的字節(jié)數(shù): 1024每個(gè)FileRecord段的簇?cái)?shù): 0

Mft有效數(shù)據(jù)長(zhǎng)度:

0x0000000009cac000

Mft起始Lcn

:

0x00000000000c4df6

Mft2起始Lcn

:

0x00000000008ff823

Mft區(qū)域起始:

0x0000000001067920

Mft區(qū)域結(jié)尾:

0x000000000108ce60上面簇字節(jié)數(shù)既為塊大小。2.在linux系統(tǒng)上，可以用命令tune2fs，測(cè)試如下[root@localhost test10g]# df

Filesystem

1K-blocks????? Used Available Use% Mounted on

/dev/sda2

8776068?? 7576504??? 753764 91% /

/dev/sda1

497829???? 16303??? 455824?? 4%

/boot

none

517300???????? 0

517300?? 0% /dev/shm

/dev/sda5

1035660???? 96452??? 886600 10% /tmp

[root@localhost test10g]# tune2fs -l /dev/sda1|grep Block

Block

count:

514048

Block

size:

1024

Blocks per group:???????? 8192

[root@localhost test10g]# tune2fs -l /dev/sda2|grep Block

Block

count:

2229018

Block

size:

4096

Blocks per group:???????? 32768上面Block size即為塊大小。

--查看共享內(nèi)存頁(yè)大小

root@rh6a_[/root]# getconf PAGESIZE

4096

--查看塊大小

root@rh6a_[/root]# tune2fs -l /dev/sda1 |grep 'Block size'

Block size: ? ? ? ? ? ? ? 1024

3.在Solaris系統(tǒng)上，可以用命令fstyp，測(cè)試如下:

bash-2.05# fstyp -v /dev/rdsk/c0t2d0s0 |more

ufs

magic? ?11954? ?format??dynamic time

Mon Nov??4 17:46:05 2002

sblkno??16? ?? ?cblkno??24

iblkno??28

dblkno??408

sbsize??2048? ? cgsize??4096

cgoffset 160? ? cgmask??0xfffffff0

ncg? ???697? ???size

17827200? ?? ???blocks??17553949

bsize? ?4096? ? shift? ?12

mask? ? 0xfffff000

fsize? ?1024? ? shift? ?10

mask? ? 0xfffffc00

frag? ? 4? ?? ? shift? ?2

fsbtodb 1

minfree 1%? ?? ?maxbpg??1024

optim? ?time

maxcontig 256? ?rotdelay 0ms? ? rps

120

csaddr??408? ???cssize??11264

shift? ?8? ?? ? mask? ? 0xffffff00

ntrak? ?10? ?? ?nsect? ?320

spc? ???3200? ? ncyl

11142

cpg? ???16? ?? ?bpg

6400? ? fpg? ???25600

ipg? ???3040

nindir??1024? ? inopb? ?32

nspf? ? 2

nbfree??4388485 ndir? ? 2

nifree??2118876 nffree??4

cgrotor 0? ?? ? fmod? ? 0

ronly? ?0? ?? ? logbno??0上面sbsize即為塊大小。

4.AIX

root@jnrac1_[/]# df

Filesystem??? 512-blocks????? Free

%Used??? Iused %Iused Mounted on

/dev/hd4???????? 2097152?? 1676656

21%??? 10339???? 6% /

/dev/hd2???????? 6291456??? 934376

86%??? 51593??? 33% /usr

……

5.HPUNIX

root@$HPRX2800::[/]#df -g

/home????????????????? (/dev/vg00/lvol5?????? ) :

8192 file system

block size??????????? 8192

fragment size

16384 total blocks

15296 total free blocks

15208 allocated free blocks

3872 total i-nodes

3801 total free i-nodes

3801 allocated free i-nodes

1073741829 file system id??????????????????? vxfs file system type

0x10 flags

255 file system name length

/home file system specific string

總結(jié)

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