Linux下使用裸设备存储选项安装Oracle

1.5.1.3 Raw Devices

Raw devices are disk partitions or logical volumes that have not been formatted with a file system. When you use raw devices for database file storage, Oracle writes data directly to the partition or volume, bypassing the operating system file system layer. For this reason, you can sometimes achieve performance gains by using raw devices. However, because raw devices can be difficult to create and administer, and because the performance gains over modern file systems are minimal, Oracle recommends that you choose Automatic Storage Management or file system storage in preference to raw devices.

Linux下使用裸设备存储选项安装oracle时可以参照以下方式进行配置

此例中linux下有/dev/sda /dev/sdb /dev/sdc /dev/sdd /dev/sde /dev/sdf
/dev/sda 用于操作系统软件安装 
/dev/sdb 用于做ocr disk
/dev/sdc 用于做votingdisk
/dev/sdd /dev/sde /dev/sdf 用于做共享磁盘存储，每块磁盘按照指定大小（500M）划分分区
磁盘分区情况如下
[root@node1 ~]# fdisk -l

Disk /dev/sda: 16.1 GB, 16106127360 bytes
255 heads, 63 sectors/track, 1958 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes


   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          64      514048+  83  Linux
/dev/sda2             833        1958     9044595   83  Linux
/dev/sda3              65         701     5116702+  83  Linux
/dev/sda4             702         832     1052257+   5  Extended
/dev/sda5             702         832     1052226   82  Linux swap / Solaris


Partition table entries are not in disk order


Disk /dev/sdb: 536 MB, 536870912 bytes
64 heads, 32 sectors/track, 512 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes


   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1         512      524272   83  Linux


Disk /dev/sdc: 536 MB, 536870912 bytes
64 heads, 32 sectors/track, 512 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes


   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1               1         512      524272   83  Linux


Disk /dev/sdd: 3221 MB, 3221225472 bytes
255 heads, 63 sectors/track, 391 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes


   Device Boot      Start         End      Blocks   Id  System
/dev/sdd1               1         391     3140676    5  Extended
/dev/sdd5               1          62      497952   83  Linux
/dev/sdd6              63         124      497983+  83  Linux
/dev/sdd7             125         186      497983+  83  Linux
/dev/sdd8             187         248      497983+  83  Linux
/dev/sdd9             249         310      497983+  83  Linux
/dev/sdd10            311         391      650601   83  Linux


Disk /dev/sde: 3221 MB, 3221225472 bytes
255 heads, 63 sectors/track, 391 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes


   Device Boot      Start         End      Blocks   Id  System
/dev/sde1               1         391     3140676    5  Extended
/dev/sde5               1          74      594342   83  Linux
/dev/sde6              75         148      594373+  83  Linux
/dev/sde7             149         222      594373+  83  Linux
/dev/sde8             223         296      594373+  83  Linux
/dev/sde9             297         391      763056   83  Linux


Disk /dev/sdf: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes


   Device Boot      Start         End      Blocks   Id  System
/dev/sdf1               1        1044     8385898+   5  Extended
/dev/sdf5               1          62      497952   83  Linux
/dev/sdf6              63         124      497983+  83  Linux
/dev/sdf7             125         186      497983+  83  Linux
/dev/sdf8             187         248      497983+  83  Linux
/dev/sdf9             249         310      497983+  83  Linux
/dev/sdf10            311         372      497983+  83  Linux
/dev/sdf11            373         434      497983+  83  Linux
/dev/sdf12            435         496      497983+  83  Linux
/dev/sdf13            497         558      497983+  83  Linux
/dev/sdf14            559         620      497983+  83  Linux
/dev/sdf15            621         682      497983+  83  Linux


Disk /dev/sdg: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes