Oracle10g创建表空间慢问题

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系统环境 CPU info: Number of CPUs = 4 Clock speed = 1595 MHz Bus speed = 532 MT/s CPUID registers vendor

系统环境

CPU info:
Number of CPUs = 4
Clock speed = 1595 MHz
Bus speed = 532 MT/s
CPUID registers
vendor information = "GenuineIntel"
processor serial number = 0x0000000000000000
processor version info = 0x0000000020000704
architecture revision: 0
processor family: 32 Intel(R) Itanium 2 9000 series
processor model: 0 Intel(R) Itanium 2 9000 series
processor revision: 7 Stepping C2
largest CPUID reg: 4
processor capabilities = 0x0000000000000005
implements long branch: 1
implements 16-byte atomic operations: 1
Bus features
implemented = 0xbdf0000020000000
selected = 0x0000000000000000

Cache info (per core):
L1 Instruction: size = 16 KB, associativity = 4
L1 Data: size = 16 KB, associativity = 4
L2 Instruction: size = 1024 KB, associativity = 8
L2 Data: size = 256 KB, associativity = 8
L3 Unified: size = 9216 KB, associativity = 9

Memory = 16364 MB (15.980469 GB)

Platform info:
model string = "ia64 hp server rx2660"
machine id number = d3a7307e-6c0c-11dc-9a43-073f36ab3df2
machine serial number = SGH4735167

OS info:
sysname = HP-UX
nodename = xxx
release = B.11.23
version = U (unlimited-user license)
machine = ia64
idnumber = 3550949502
vmunix _release_version:

数据库系统：Oracle 10g r2

安装的时候把系统80%的内存都分配给oracle数据库（大概是10G左右）

问题：

在/data目录建表空间
1G需要时间为2分多钟
2G需要时间为5分多钟

在/oradata目录建表空间
1G需要时间为5分多钟
2G需要时间为10分多钟

在本机的window系统下安装oracle 11g，，

创建表空间1G大概15到20秒，2G大概30到40秒左右。

为什么在hp-ux上创建表空间会那么慢呢？

具体在hp-ux上简表过程如下：

$ vi create_tablespace.sh
"create_tablespace.sh" 10 lines, 395 characters
#!/bin/sh
echo "===========start date:`date` ============"
sqlplus / as sysdba <<EOF
create tablespace test1 datafile '/data/test1.dbf' size 1024M;
quit;
EOF
echo "===========end date:`date`==============="
$ ./create_tablespace.sh
===========start date:Mon Dec 5 10:55:48 EAT 2011 ============

SQL*Plus: Release 10.2.0.1.0 - Production on Mon Dec 5 10:55:48 2011

Copyright (c) 1982, 2005, Oracle. All rights reserved.

Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options

SQL> SQL> SQL>
Tablespace created.

SQL> Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
===========end date:Mon Dec 5 10:57:53 EAT 2011===============
$ vi create_tablespace.sh
"create_tablespace.sh" 10 lines, 394 characters
#!/bin/sh
echo "===========start date:`date` ============"
sqlplus / as sysdba <<EOF
create tablespace test2 datafile '/oradata/test2.dbf' size 1024M;
quit;
EOF
echo "===========end date:`date`==============="

"create_tablespace.sh" 10 lines, 397 characters
$ ./create_tablespace.sh
===========start date:Mon Dec 5 10:59:13 EAT 2011 ============

SQL*Plus: Release 10.2.0.1.0 - Production on Mon Dec 5 10:59:13 2011

Copyright (c) 1982, 2005, Oracle. All rights reserved.

Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options

SQL> SQL> SQL>
Tablespace created.

SQL> Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
===========end date:Mon Dec 5 11:04:01 EAT 2011===============
$ vi create_tablespace.sh
"create_tablespace.sh" 10 lines, 397 characters
#!/bin/sh
echo "===========start date:`date` ============"
sqlplus / as sysdba <<EOF
create tablespace test4 datafile '/oradata/test4.dbf' size 2048M;
quit;
EOF
echo "===========end date:`date`==============="

"create_tablespace.sh" 10 lines, 397 characters
$ ./create_tablespace.sh
===========start date:Mon Dec 5 11:05:32 EAT 2011 ============

SQL*Plus: Release 10.2.0.1.0 - Production on Mon Dec 5 11:05:32 2011

Copyright (c) 1982, 2005, Oracle. All rights reserved.

Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options

SQL> SQL> SQL>
Tablespace created.

SQL> Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
===========end date:Mon Dec 5 11:16:03 EAT 2011===============
$ vi create_tablespace.sh
"create_tablespace.sh" 10 lines, 397 characters
#!/bin/sh
echo "===========start date:`date` ============"
sqlplus / as sysdba <<EOF
create tablespace test3 datafile '/data/test3.dbf' size 2048M;
quit;
EOF
echo "===========end date:`date`==============="

$ vi create_tablespace.sh
"create_tablespace.sh" 10 lines, 397 characters
#!/bin/sh
echo "===========start date:`date` ============"
sqlplus / as sysdba <<EOF
create tablespace test3 datafile '/data/test3.dbf' size 2048M;
quit;
EOF
echo "===========end date:`date`==============="

$ ./create_tablespace.sh
===========start date:Mon Dec 5 12:43:34 EAT 2011 ============

SQL*Plus: Release 10.2.0.1.0 - Production on Mon Dec 5 12:43:34 2011

Copyright (c) 1982, 2005, Oracle. All rights reserved.

Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options

SQL> SQL> SQL>
Tablespace created.

SQL> Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
===========end date:Mon Dec 5 12:47:39 EAT 2011===============

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