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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

undefined99-oracle-asmdevices.rules file, undefined

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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

The above is "Redhat 6 Oracle 11g RAC installation considerations what" all the content of this article, thank you for reading! I believe that everyone has a certain understanding, hope to share the content to help everyone, if you still want to learn more knowledge, welcome to pay attention to the industry information channel!

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