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Step by Step Oracle RAC on Veritas DBE/AC( 七 )

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*/
使用應用程序vxfentsthdw來測試磁盤陣列是否支持SCSI-3 PR（I/O Fencing）：
# cd /opt/VRTSvcs/rac/bin
# ./vxfentsthdw
******** WARNING!!!!!!!! ********
THIS UTILITY WILL DESTROY THE DATA ON THE DISK!!
Do you still want to contnue : [y/n] (default: n)
y
Enter the first node of the cluster:
rac1
Enter the second node of the cluster:
rac2
Enter the disk name to be checked for SCSI-3 PGR on node rac1 in
the format: /dev/rdsk/cxtxdxsx
/dev/rdsk/c2t0d0s2
Enter the disk name to be checked for SCSI-3 PGR on node rac2 in
the format: /dev/rdsk/cxtxdxsx
Make sure it"s the same disk as seen by nodes rac1 and rac2
/dev/rdsk/c2t0d0s2
Keys registered for disk /dev/rdsk/c2t8d0s2 on node rac1
Verifying registrations of keys for disk /dev/rdsk/c2t8d0s2
on node rac1: passed
Reads from disk /dev/rdsk/c4t8d0s2 successful on node rac1
Reads from disk /dev/rdsk/c4t8d0s2 successful on node rac2
Writes from disk /dev/rdsk/c4t8d0s2 successful on node rac1
Writes from disk /dev/rdsk/c4t8d0s3 successful on node rac2
.
.
.
/* 出現(xiàn)如下信息表示SCSI-3 PR（I/O Fencing）測試成功 */
The disk /dev/rdsk/c4t8d0s2 is ready to be configured for I/O
Fencing on node rac1
The disk /dev/rdsk/c4t8d0s2 is ready to be configured for I/O
Fencing on node rac2

/* 注意：需要對每一個共享磁盤陣列進行這種測試，只有通過這種測試，才能用于安裝Oracle RAC */


十五、 配置veritas I/O Fensing
在rac1上，執(zhí)行如下命令：
rac1# vxdg init vxfencoorddg c2t0d1 c2t0d2 c2t0d3 /* 創(chuàng)建有三個協(xié)作盤的卷 */
rac1# vxdg deport vxfencoorddg /* 卸載卷vxfencoorddg */
rac1# vxdg –t import vxfencoorddg
/* 安裝卷vxfencoorddg,但重起時不在安裝該卷 */
rac1# vxdg deport vxfencoorddg /* 卸載卷vxfencoorddg */

在rac2上執(zhí)行如下命令：
rac2# vxdg –t import vxfencoorddg
/* 安裝卷vxfencoorddg,但重起時不在安裝該卷 */
rac2# vxdg deport vxfencoorddg /* 卸載卷vxfencoorddg */



/* 以上步驟是創(chuàng)建協(xié)作卷組 */

在rac1上，執(zhí)行如下的步驟，配置和啟動I/O Fensing：
rac1# echo "vxfencoorddg" > /etc/vxfendg
rac1# /etc/init.d/vxfen start
執(zhí)行完這兩條命令后生成如下文件：
l 文件 /etc/vxfendg，其內容為：
vxfencoorddg
l 文件/etc/vxfentab，其內容為：
/dev/rdsk/c2t0d1s2
/dev/rdsk/c2t0d2s2
/dev/rdsk/c2t0d3s2

在rac2上，執(zhí)行如下的步驟，配置和啟動I/O Fensing：
rac2# echo "vxfencoorddg" > /etc/vxfendg
rac2# /etc/init.d/vxfen start
同樣，這兩條命令也生成文件/etc/vxfendg和/vxfentab


下面的命令，驗證I/O Fensing的功能是否啟動：
# /sbin/gabconfig -a
GAB Port Memberships
===============================================================
Port a gen 4a1c0001 membership 01
Port b gen g8ty0002 membership 01
Port d gen 40100001 membership 01
Port f gen f1990002 membership 01
Port h gen d8850002 membership 01
Port o gen f1100002 membership 01
Port q gen 28d10002 membership 01
Port v gen 1fc60002 membership 01
Port w gen 15ba0002 membership 01

如果有Port b gen g8ty0002 membership 01這一行信息顯示，則表示I/O Fensing的功能已經(jīng)啟動 。


十六、 為SRVM創(chuàng)建共享卷組和卷，以下的命令，在rac1上執(zhí)行就可以了：
vxdg -s init orasrv_dg c2t0d4
vxassist -g orasrv_dg make srvm_vol 300M
vxedit set diskdetpolicy=local orasrv_dg
vxdg -g orasrv_dg set activation=sw
rsh -l root rac2 vxdg -g orasrv_dg set activation=sw


十七、 在rac1和rac2上創(chuàng)建dba組和oracle用戶：oracle用戶的主組是dba；主目錄是/opt/oracle；shell是Bourne Shell，其環(huán)境文件如下
stty istrip
PATH=/usr/bin:/usr/ucb:/etc:.
export PATH
ORACLE_BASE=/opt/oracle
export ORACLE_BASE
ORACLE_OWNER=oracle

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