What are the installation considerations of Oracle 11g RAC in Redhat 6
Xiaobian to share with you Redhat 6 Oracle 11g RAC installation precautions, I believe most people do not know how, so share this article for your reference, I hope you read this article after a lot of harvest, let us go to understand it!
SWAP must be>=16G, otherwise an error will be reported in the pre-check. change mode
mkdir -p /home/swapdd if=/dev/zero of=/home/swap/swapfile bs=1024 count=16777216mkswap /home/swap/swapfileswapon /home/swap/swapfile
edit the/etc/fstab
/home/swap/swapfile swap swap defaults 0 0
2. Set the host name/etc/hosts, the name should not be too long, it is best../ dm-3
datalunp2 lrwxrwxrwx. 1 root root 7 Dec 21 21:08 /dev/mapper/datalunp2 -> ../ dm-4
datalunp3 lrwxrwxrwx. 1 root root 7 Dec 21 21:08 /dev/mapper/datalunp3 -> ../ dm-5
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KERNEL=="dm-3",ENV{DM_UUID}=="part1-mpath-36001438009b064ce0000500000160000",OWNER="grid",GROUP="asmadmin",MODE="0660"
KERNEL=="dm-4",ENV{DM_UUID}=="part2-mpath-36001438009b064ce0000500000160000",OWNER="grid",GROUP="asmadmin",MODE="0660"
KERNEL=="dm-5",ENV{DM_UUID}=="part3-mpath-36001438009b064ce0000500000160000",OWNER="grid",GROUP="asmadmin",MODE="0660"
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2）emcpower
Because emcpower has configured multipath, you can directly give permissions, defined as follows:
fdisk -l Look at the defined partitions and create the file 50-udev.rules
[root@pos1 ~]# cat /etc/udev/rules.d/50-udev.rules
SUBSYSTEM=="block", KERNEL=="emcpowera", GROUP="asmadmin", OWNER="grid", MODE="0660"
SUBSYSTEM=="block", KERNEL=="emcpowerb", GROUP="asmadmin", OWNER="grid", MODE="0660"
SUBSYSTEM=="block", KERNEL=="emcpowerc", GROUP="asmadmin", OWNER="grid", MODE="0660"
SUBSYSTEM=="block", KERNEL=="emcpowerd", GROUP="asmadmin", OWNER="grid", MODE="0660"
SUBSYSTEM=="block", KERNEL=="emcpowere", GROUP="asmadmin", OWNER="grid", MODE="0660"
SUBSYSTEM=="block", KERNEL=="emcpowerf", GROUP="asmadmin", OWNER="grid", MODE="0660"
SUBSYSTEM=="block", KERNEL=="emcpowerg", GROUP="asmadmin", OWNER="grid", MODE="0660"
SUBSYSTEM=="block", KERNEL=="emcpowerh", GROUP="asmadmin", OWNER="grid", MODE="0660"
SUBSYSTEM=="block", KERNEL=="emcpoweri", GROUP="asmadmin", OWNER="grid", MODE="0660"
SUBSYSTEM=="block", KERNEL=="emcpowerj", GROUP="asmadmin", OWNER="grid", MODE="0660"
SUBSYSTEM=="block", KERNEL=="emcpowerk", GROUP="asmadmin", OWNER="grid", MODE="0660"
SUBSYSTEM=="block", KERNEL=="emcpowerl", GROUP="asmadmin", OWNER="grid", MODE="0660"
SUBSYSTEM=="block", KERNEL=="emcpowerm", GROUP="asmadmin", OWNER="grid", MODE="0660"
SUBSYSTEM=="block", KERNEL=="emcpowern", GROUP="asmadmin", OWNER="grid", MODE="0660"
Start ude
# start_udev
Starting udev: [OK]
View udev definitions
[root@pos1 ~]# ls -l /dev/emcpower*
brw-rw---- 1 grid asmadmin 120, 0 Jul 23 15:46 /dev/emcpowera
brw-rw---- 1 grid asmadmin 120, 16 Jul 23 15:46 /dev/emcpowerb
brw-rw---- 1 grid asmadmin 120, 32 Jul 23 15:46 /dev/emcpowerc
brw-rw---- 1 grid asmadmin 120, 48 Jul 23 15:46 /dev/emcpowerd
brw-rw---- 1 grid asmadmin 120, 64 Jul 23 15:46 /dev/emcpowere
brw-rw---- 1 grid asmadmin 120, 80 Jul 23 15:46 /dev/emcpowerf
brw-rw---- 1 grid asmadmin 120, 96 Jul 22 20:41 /dev/emcpowerg
brw-rw---- 1 grid asmadmin 120, 112 Jul 23 15:46 /dev/emcpowerh
brw-rw---- 1 grid asmadmin 120, 128 Jul 23 15:46 /dev/emcpoweri
brw-rw---- 1 grid asmadmin 120, 144 Jul 23 15:46 /dev/emcpowerj
brw-rw---- 1 grid asmadmin 120, 160 Jul 23 15:46 /dev/emcpowerk
brw-rw---- 1 grid asmadmin 120, 176 Jul 23 15:46 /dev/emcpowerl
brw-rw---- 1 grid asmadmin 120, 192 Jul 23 15:46 /dev/emcpowerm
brw-rw---- 1 grid asmadmin 120, 208 Jul 23 15:46 /dev/emcpowern
That's OK.
6. Configure Xmanager
Redhat6 configuration Xmanager method is as follows
1)Edit custom.conf file
# vi /etc/gdm/custom.conf
[xdmcp]
Enable=true
2)start GDM
RHEL6: init2 then init5
# init 2
# init 5
7. When installing CRS, if the machine is not configured with DNS or GNS, do not check when selecting GNS.
8. Execute root.sh script
11201 has a bug, the second server execution script will report an error, the solution is as follows:
When Adding daemon to inittab appears while executing root.sh script, execute command immediately below root in another window until execution succeeds
/bin/dd if=/var/tmp/.oracle/npohasd of=/dev/null bs=1024 count=1
(This is the Bug of 11201)
If you want to re-execute root.sh, execute rootas.pl before root.sh
./ app/grid/crs/install/roothas.pl -deconfig -force -verbose
9. After automatic restart, a node cannot be automatically started, and the ohasd process is not started.
The solution is as follows:
1) Inspection process
#ps -ef | grep d.bin
#ps -ef | grep ohasd
2) Manual start
#/etc/init.d/init.ohasd run
3) Add/etc/inittab
h2:35:respawn:/etc/init.d/init.ohasd run >/dev/null 2>&1
4) Add/etc/rc.d/rc.loacl
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