Monday, 28 August 2017

Oracle Database 12c Release 2 (12.2) RAC On Oracle Linux 7 Using VirtualBox Part-2

  • Install Guest Additions

Click on the "Devices > Install Guest Additions" menu option at the top of the VM screen. If you get the option to auto-run take it. If not, then run the following commands.

cd /media/VBOXADDITIONS*
sh ./VBoxLinuxAdditions.run

Add the "oracle" user into the "vboxsf" group so it has access to shared drives.

# usermod -G oinstall,dba,vboxsf oracle
# id oracle
uid=54321(oracle) gid=54321(oinstall) groups=54321(oinstall),54322(dba),54323(vboxsf)
#

Unzip the database software (but not the grid software) on the host machine.

unzip linuxx64_12201_database.zip

Create a shared folder (Devices > Shared Folders) on the virtual machine, pointing to the directory on the host where the Oracle software was unzipped. Check the "Auto-mount" and "Make Permanent" options before clicking the "OK" button.

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The VM will need to be restarted for the guest additions to be used properly. The next section requires a shutdown so no additional restart is needed at this time. Once the VM is restarted, the shared folder called "/media/sf_12.2.0.1" will be accessible by the "oracle" user.

  • Create Shared Disks


Shut down the "ol7-122-rac1" virtual machine using the following command.

# shutdown -h now

On the host server, create 4 sharable virtual disks and associate them as virtual media using the following commands. You can pick a different location, but make sure they are outside the existing VM directory.

$ mkdir -p /u04/VirtualBox/ol7-122-rac
$ cd /u04/VirtualBox/ol7-122-rac
$
$ # Create the disks and associate them with VirtualBox as virtual media.
$ VBoxManage createhd --filename asm1.vdi --size 20480 --format VDI --variant Fixed
$ VBoxManage createhd --filename asm2.vdi --size 20480 --format VDI --variant Fixed
$ VBoxManage createhd --filename asm3.vdi --size 20480 --format VDI --variant Fixed
$ VBoxManage createhd --filename asm4.vdi --size 20480 --format VDI --variant Fixed
$
$ # Connect them to the VM.
$ VBoxManage storageattach ol7-122-rac1 --storagectl "SATA" --port 1 --device 0 --type hdd --medium asm1.vdi --mtype shareable
$ VBoxManage storageattach ol7-122-rac1 --storagectl "SATA" --port 2 --device 0 --type hdd --medium asm2.vdi --mtype shareable
$ VBoxManage storageattach ol7-122-rac1 --storagectl "SATA" --port 3 --device 0 --type hdd --medium asm3.vdi --mtype shareable
$ VBoxManage storageattach ol7-122-rac1 --storagectl "SATA" --port 4 --device 0 --type hdd --medium asm4.vdi --mtype shareable
$
$ # Make shareable.
$ VBoxManage modifyhd asm1.vdi --type shareable
$ VBoxManage modifyhd asm2.vdi --type shareable
$ VBoxManage modifyhd asm3.vdi --type shareable
$ VBoxManage modifyhd asm4.vdi --type shareable

If you are using a Windows host, you will have to modify the paths, but the process is the same.

C:
mkdir C:\VirtualBox\ol7-122-rac
cd C:\VirtualBox\ol7-122-rac

"c:\Program Files\Oracle\VirtualBox\VBoxManage" createhd --filename asm1.vdi --size 5120 --format VDI --variant Fixed
"c:\Program Files\Oracle\VirtualBox\VBoxManage" createhd --filename asm2.vdi --size 5120 --format VDI --variant Fixed
"c:\Program Files\Oracle\VirtualBox\VBoxManage" createhd --filename asm3.vdi --size 5120 --format VDI --variant Fixed
"c:\Program Files\Oracle\VirtualBox\VBoxManage" createhd --filename asm4.vdi --size 5120 --format VDI --variant Fixed

"c:\Program Files\Oracle\VirtualBox\VBoxManage" storageattach ol7-122-rac1 --storagectl "SATA" --port 1 --device 0 --type hdd --medium asm1.vdi --mtype shareable
"c:\Program Files\Oracle\VirtualBox\VBoxManage" storageattach ol7-122-rac1 --storagectl "SATA" --port 2 --device 0 --type hdd --medium asm2.vdi --mtype shareable
"c:\Program Files\Oracle\VirtualBox\VBoxManage" storageattach ol7-122-rac1 --storagectl "SATA" --port 3 --device 0 --type hdd --medium asm3.vdi --mtype shareable
"c:\Program Files\Oracle\VirtualBox\VBoxManage" storageattach ol7-122-rac1 --storagectl "SATA" --port 4 --device 0 --type hdd --medium asm4.vdi --mtype shareable

"c:\Program Files\Oracle\VirtualBox\VBoxManage" modifyhd asm1.vdi --type shareable
"c:\Program Files\Oracle\VirtualBox\VBoxManage" modifyhd asm2.vdi --type shareable
"c:\Program Files\Oracle\VirtualBox\VBoxManage" modifyhd asm3.vdi --type shareable
"c:\Program Files\Oracle\VirtualBox\VBoxManage" modifyhd asm4.vdi --type shareable
Start the "ol7-122-rac1" virtual machine by clicking the "Start" button on the toolbar. When the server has started, log in as the root user so you can configure the shared disks. The current disks can be seen by issuing the following commands.

# cd /dev
# ls sd*
sda  sda1  sda2  sdb  sdc  sdd  sde
#

Use the "fdisk" command to partition the disks sdb to sde. The following output shows the expected fdisk output for the sdb disk.

# fdisk /dev/sdb
Welcome to fdisk (util-linux 2.23.2).

Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0x14a4629c.

Command (m for help): n
Partition type:
   p   primary (0 primary, 0 extended, 4 free)
   e   extended
Select (default p): p
Partition number (1-4, default 1): 
First sector (2048-41943039, default 2048): 
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-41943039, default 41943039): 
Using default value 41943039
Partition 1 of type Linux and of size 20 GiB is set

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.
#

In each case, the sequence of answers is "n", "p", "1", "Return", "Return" and "w".

Once all the disks are partitioned, the results can be seen by repeating the previous "ls" command.

# cd /dev
# ls sd*
sda  sda1  sda2  sdb  sdb1  sdc  sdc1  sdd  sdd1  sde  sde1
#

Configure your UDEV rules.

Add the following to the "/etc/scsi_id.config" file to configure SCSI devices as trusted. Create the file if it doesn't already exist.

options=-g

The SCSI ID of my disks are displayed below.

# /usr/lib/udev/scsi_id -g -u -d /dev/sdb1
1ATA_VBOX_HARDDISK_VB189c7a69-689f61b0
# /usr/lib/udev/scsi_id -g -u -d /dev/sdc1
1ATA_VBOX_HARDDISK_VBc4ae174e-fc756d12
# /usr/lib/udev/scsi_id -g -u -d /dev/sdd1
1ATA_VBOX_HARDDISK_VBa4e03079-ae751cbd
# /usr/lib/udev/scsi_id -g -u -d /dev/sde1
1ATA_VBOX_HARDDISK_VBf00747dc-10252f06
#

Using these values, edit the "/etc/udev/rules.d/99-oracle-asmdevices.rules" file adding the following 4 entries. All parameters for a single entry must be on the same line.

KERNEL=="sd?1", SUBSYSTEM=="block", PROGRAM=="/usr/lib/udev/scsi_id -g -u -d /dev/$parent", RESULT=="1ATA_VBOX_HARDDISK_VB189c7a69-689f61b0", SYMLINK+="oracleasm/asm-disk1", OWNER="oracle", GROUP="dba", MODE="0660"
KERNEL=="sd?1", SUBSYSTEM=="block", PROGRAM=="/usr/lib/udev/scsi_id -g -u -d /dev/$parent", RESULT=="1ATA_VBOX_HARDDISK_VBc4ae174e-fc756d12", SYMLINK+="oracleasm/asm-disk2", OWNER="oracle", GROUP="dba", MODE="0660"
KERNEL=="sd?1", SUBSYSTEM=="block", PROGRAM=="/usr/lib/udev/scsi_id -g -u -d /dev/$parent", RESULT=="1ATA_VBOX_HARDDISK_VBa4e03079-ae751cbd", SYMLINK+="oracleasm/asm-disk3", OWNER="oracle", GROUP="dba", MODE="0660"
KERNEL=="sd?1", SUBSYSTEM=="block", PROGRAM=="/usr/lib/udev/scsi_id -g -u -d /dev/$parent", RESULT=="1ATA_VBOX_HARDDISK_VBf00747dc-10252f06", SYMLINK+="oracleasm/asm-disk4", OWNER="oracle", GROUP="dba", MODE="0660"

Load updated block device partition tables.

# /sbin/partprobe /dev/sdb1
# /sbin/partprobe /dev/sdc1
# /sbin/partprobe /dev/sdd1
# /sbin/partprobe /dev/sde1

Test the rules are working as expected.

# /sbin/udevadm test /block/sdb/sdb1

Reload the UDEV rules.

# /sbin/udevadm control --reload-rules

The disks should now be visible and have the correct ownership using the following command. If they are not visible, your UDEV configuration is incorrect and must be fixed before you proceed.

# ls -al /dev/oracleasm/*
lrwxrwxrwx. 1 root root 7 Mar  6 17:41 /dev/oracleasm/asm-disk1 -> ../sdb1
lrwxrwxrwx. 1 root root 7 Mar  6 17:41 /dev/oracleasm/asm-disk2 -> ../sdc1
lrwxrwxrwx. 1 root root 7 Mar  6 17:41 /dev/oracleasm/asm-disk3 -> ../sdd1
lrwxrwxrwx. 1 root root 7 Mar  6 17:41 /dev/oracleasm/asm-disk4 -> ../sde1
#

The symbolic links are owned by root, but the devices they point to now have the correct ownership.

# ls -al /dev/sd*1
brw-rw----. 1 root   disk 8,  1 Apr 25 14:11 /dev/sda1
brw-rw----. 1 oracle dba  8, 17 Apr 25 14:11 /dev/sdb1
brw-rw----. 1 oracle dba  8, 33 Apr 25 14:11 /dev/sdc1
brw-rw----. 1 oracle dba  8, 49 Apr 25 14:11 /dev/sdd1
brw-rw----. 1 oracle dba  8, 65 Apr 25 14:11 /dev/sde1
#

The shared disks are now configured for the grid infrastructure.

  • Clone the Virtual Machine


Do not use VirtualBox to clone VM, as it will also attempt to clone the shared disks, which is not what we want. Instead we must manually clone the VM.

Shut down the "ol7-122-rac1" virtual machine using the following command.

# shutdown -h now

You may get errors if you create the virtual disk in the default location VirtualBox will use to create the VM. If that happens, rename the folder holding the new virtual disk and go through the creation process of the new VM again.

Manually clone the "ol7-122-rac1.vdi" disk using the following commands on the host server.

$ # Linux
$ mkdir -p /u03/VirtualBox/ol7-122-rac2
$ VBoxManage clonehd /u01/VirtualBox/ol7-122-rac1/ol7-122-rac1.vdi /u03/VirtualBox/ol7-122-rac2/ol7-122-rac2.vdi

Rem Windows
mkdir "C:\VirtualBox\ol7-122-rac2"
"c:\Program Files\Oracle\VirtualBox\VBoxManage" clonehd "C:\VirtualBox\ol7-122-rac1\ol7-122-rac1.vdi" "C:\VirtualBox\ol7-122-rac2\ol7-122-rac2.vdi"

Create the "ol7-122-rac2" virtual machine in VirtualBox in the same way as you did for "ol7-122-rac1", with the exception of using an existing "ol7-122-rac2.vdi" virtual hard drive.

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Remember to add the three network adaptor as you did on the "ol7-122-rac1" VM. When the VM is created, attach the shared disks to this VM.

$ # Linux : Switch to the shared storage location and attach them.
$ cd /u04/VirtualBox/ol7-122-rac
$
$ VBoxManage storageattach ol7-122-rac2 --storagectl "SATA" --port 1 --device 0 --type hdd --medium asm1.vdi --mtype shareable
$ VBoxManage storageattach ol7-122-rac2 --storagectl "SATA" --port 2 --device 0 --type hdd --medium asm2.vdi --mtype shareable
$ VBoxManage storageattach ol7-122-rac2 --storagectl "SATA" --port 3 --device 0 --type hdd --medium asm3.vdi --mtype shareable
$ VBoxManage storageattach ol7-122-rac2 --storagectl "SATA" --port 4 --device 0 --type hdd --medium asm4.vdi --mtype shareable


Rem Windows : Switch to the shared storage location and attach them.
C:
cd C:\VirtualBox\ol7-122-rac

"c:\Program Files\Oracle\VirtualBox\VBoxManage" storageattach ol7-122-rac2 --storagectl "SATA" --port 1 --device 0 --type hdd --medium asm1.vdi --mtype shareable
"c:\Program Files\Oracle\VirtualBox\VBoxManage" storageattach ol7-122-rac2 --storagectl "SATA" --port 2 --device 0 --type hdd --medium asm2.vdi --mtype shareable
"c:\Program Files\Oracle\VirtualBox\VBoxManage" storageattach ol7-122-rac2 --storagectl "SATA" --port 3 --device 0 --type hdd --medium asm3.vdi --mtype shareable
"c:\Program Files\Oracle\VirtualBox\VBoxManage" storageattach ol7-122-rac2 --storagectl "SATA" --port 4 --device 0 --type hdd --medium asm4.vdi --mtype shareable

Start the "ol7-122-rac2" virtual machine by clicking the "Start" button on the toolbar. Ignore any network errors during the startup.

Log in to the "ol7-122-rac2" virtual machine as the "root" user so we can reconfigure the network settings to match the following.
  • hostname: ol7-122-rac2.localdomain
  • enp0s3 (eth0): DHCP (*Not* Connect Automatically)
  • enp0s8 (eth1): IP=192.168.56.102, Subnet=255.255.255.0, Gateway=192.168.56.1, DNS=192.168.56.1, Search=localdomain (Connect Automatically)
  • enp0s9 (eth2): IP=192.168.1.102, Subnet=255.255.255.0, Gateway=<blank>, DNS=<blank>, Search=<blank> (Connect Automatically)
Amend the hostname in the "/etc/hostname" file.

ol7-122-rac2.localdomain

Unlike previous Linux versions, we shouldn't have to edit the MAC address associated with the network adapters, but we will have to alter their IP addresses.

Edit the "/etc/sysconfig/network-scripts/ifcfg-enp0s8" (eth1), amending only the IPADDR settings as follows and deleting the UUID entry.

IPADDR=192.168.56.102

Edit the "/etc/sysconfig/network-scripts/ifcfg-enp0s9" (eth2), amending only the IPADDR settings as follows and deleting the UUID entry.

IPADDR=192.168.1.102

Restart the virtual machines.

# shutdown -r now

At this point, the networking for the second node should look something like the following. Notice that enp0s3 (eth0) has no associated IP address because it is disabled.

# ifconfig
enp0s3 : flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        ether 08:00:27:dc:7c:74  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

enp0s8: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.56.102  netmask 255.255.255.0  broadcast 192.168.56.255
        inet6 fe80::a00:27ff:fed9:c89a  prefixlen 64  scopeid 0x20<link>
        ether 08:00:27:d9:c8:9a  txqueuelen 1000  (Ethernet)
        RX packets 197  bytes 19460 (19.0 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 178  bytes 27171 (26.5 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

enp0s9: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.102  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fe80::a00:27ff:feb4:6bf  prefixlen 64  scopeid 0x20<link>
        ether 08:00:27:b4:06:bf  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 30  bytes 4112 (4.0 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 0  (Local Loopback)
        RX packets 4  bytes 420 (420.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 4  bytes 420 (420.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

#

Edit the "/home/oracle/.bash_profile" file on the "ol7-122-rac2" node to correct the ORACLE_SID and ORACLE_HOSTNAME values.

export ORACLE_SID=cdbrac2
export ORACLE_HOSTNAME=ol7-122-rac2.localdomain

Also, amend the ORACLE_SID setting in the "/home/oracle/db_env" and "/home/oracle/grid_env" files.

Restart the "ol7-122-rac2" virtual machine and start the "ol7-122-rac1" virtual machine. When both nodes have started, check they can both ping all the public and private IP addresses using the following commands.

ping -c 3 ol7-122-rac1
ping -c 3 ol7-122-rac1-priv
ping -c 3 ol7-122-rac2
ping -c 3 ol7-122-rac2-priv

Check the SCAN address is still being resolved properly on both nodes.

# nslookup ol7-122-scan
Server: 192.168.56.1
Address: 192.168.56.1#53

Name: ol7-122-scan.localdomain
Address: 192.168.56.105
Name: ol7-122-scan.localdomain
Address: 192.168.56.106
Name: ol7-122-scan.localdomain
Address: 192.168.56.107

#

At this point the virtual IP addresses defined in the "/etc/hosts" file will not work, so don't bother testing them.

Check the UDEV rules are working on both machines.

# ls -al /dev/oracleasm/*
lrwxrwxrwx. 1 root root 7 Sep 18 08:19 /dev/oracleasm/asm-disk1 -> ../sdb1
lrwxrwxrwx. 1 root root 7 Sep 18 08:19 /dev/oracleasm/asm-disk2 -> ../sdc1
lrwxrwxrwx. 1 root root 7 Sep 18 08:19 /dev/oracleasm/asm-disk3 -> ../sdd1
lrwxrwxrwx. 1 root root 7 Sep 18 08:19 /dev/oracleasm/asm-disk4 -> ../sde1
#

Prior to 11gR2 we would probably use the "runcluvfy.sh" utility in the clusterware root directory to check the prerequisites have been met. If you are intending to configure SSH connectivity using the installer this check should be omitted as it will always fail. If you want to setup SSH connectivity manually, then once it is done you can run the "runcluvfy.sh" with the following command.

/mountpoint/clusterware/runcluvfy.sh stage -pre crsinst -n ol7-122-rac1,ol7-122-rac2 -verbose
If you get any failures be sure to correct them before proceeding.

The virtual machine setup is now complete.

Before moving forward you should probably shut down your VMs and take snapshots of them. If any failures happen beyond this point it is probably better to switch back to those snapshots, clean up the shared drives and start the grid installation again. An alternative to cleaning up the shared disks is to back them up now using zip and just replace them in the event of a failure.

$ # Linux
$ cd /u04/VirtualBox/ol7-122-rac
$ zip PreGrid.zip *.vdi

Rem Windows
C:
cd C:\VirtualBox\ol7-122-rac
zip PreGrid.zip *.vdi

  • Install the Grid Infrastructure


Make sure both virtual machines are started. The GI is now an image installation, so perform the following on the first node as the "oracle" user.

export SOFTWARE_LOCATION=/media/sf_12.2.0.1/
cd /u01/app/12.2.0.1/grid
unzip -q $SOFTWARE_LOCATION/linuxx64_12201_grid_home.zip

Install the following package from the grid home as the "root" user on all nodes.

su -
# Local node.
cd /u01/app/12.2.0.1/grid/cv/rpm
rpm -Uvh cvuqdisk*

# Remote node.
scp ./cvuqdisk* root@ol7-122-rac2:/tmp
ssh root@ol7-122-rac2 rpm -Uvh /tmp/cvuqdisk*
exit

If you were planning on using the AFD Driver (the new ASMLib) you would configure the shared disks using the asmcmd command as shown below. We are using UDEV, so this is not necessary.

# !!!! I did not do this! !!!!
su -

# Set environment.
export ORACLE_HOME=/u01/app/12.2.0.1/grid
export ORACLE_BASE=/tmp

# Mark disks.
$ORACLE_HOME/bin/asmcmd afd_label DISK1 /dev/oracleasm/asm-disk1 --init
$ORACLE_HOME/bin/asmcmd afd_label DISK2 /dev/oracleasm/asm-disk2 --init
$ORACLE_HOME/bin/asmcmd afd_label DISK3 /dev/oracleasm/asm-disk3 --init
$ORACLE_HOME/bin/asmcmd afd_label DISK4 /dev/oracleasm/asm-disk4 --init

# Test Disks.
$ORACLE_HOME//bin/asmcmd afd_lslbl /dev/oracleasm/asm-disk1
$ORACLE_HOME//bin/asmcmd afd_lslbl /dev/oracleasm/asm-disk2
$ORACLE_HOME//bin/asmcmd afd_lslbl /dev/oracleasm/asm-disk3
$ORACLE_HOME//bin/asmcmd afd_lslbl /dev/oracleasm/asm-disk4

# unset environment.
unset ORACLE_BASE

exit

Configure the Grid Infrastructure by running the following as the "oracle" user.

I could have run the configuration in silent mode using this edited response file (grid_config.rsp) with the following command.

cd /u01/app/12.2.0.1/grid
./gridSetup.sh -responseFile /tmp/grid_config.rsp
Instead, here's the interactive configuration.

cd /u01/app/12.2.0.1/grid
./gridSetup.sh

Select the "Configure Oracle Grid Infrastructure for a New Cluster" option, then click the "Next" button.

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Accept the "Configure an Oracle Standalone Cluster" option by clicking the "Next" button.

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Enter the cluster name "ol7-122-cluster", SCAN name "ol7-122-scan" and SCAN port "1521", then click the "Next" button.

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On the "Cluster Node Information" screen, click the "Add" button.

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Enter the details of the second node in the cluster, then click the "OK" button.

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Click the "SSH connectivity..." button and enter the password for the "oracle" user. Click the "Setup" button to configure SSH connectivity, and the "Test" button to test it once it is complete. Once the test is complete, click the "Next" button.

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Check the public and private networks are specified correctly. If the NAT interface is displayed, remember to mark it as "Do Not Use". Click the "Next" button.

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Accept the "Configure ASM using block devices" option by clicking the "Next" button.

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Select the "No" option, as we don't want to create a separate disk group for the GIMR in this case. Click the "Next" button.

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Set the redundancy to "External", click the "Change Discovery Path" button and set the path to "/dev/oracleasm/*". Return to the main screen and select all 4 disks. Uncheck the "Configure Oracle ASM Filter Driver" option, then click the "Next" button.

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Enter the credentials and click the "Next" button.

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Accept the default IPMI option by clicking the "Next" button.

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Don't register with EM. Click the "Next" button.

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We are using a single user and group manage both ASM add the database, so set the groups to "dba" and click the "Next" button. Accept the warnings on the subsequent dialog by clicking the "Yes" button.

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Enter the Oracle Base location "/u01/app/oracle" and click the "Next" button. We have already pre-created directories for the later database installation, so ignore the subsequent warning about the Oracle Base not being empty by clicking the "Yes" button.

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Accept the default inventory directory by clicking the "Next" button.

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If you want the root scripts to run automatically, enter the relevant credentials. I prefer to run them manually. Click the "Next" button.

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Wait while the prerequisite checks complete. If you have any issues use the "Fix & Check Again" button. Once possible fixes are complete, check the "Ignore All" checkbox and click the "Next" button. It is likely the "Physical Memory" and "Network Time Protocol (NTP)" tests will fail for this type of installation. This is OK.

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If you are happy with the summary information, click the "Install" button.

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Wait while the installation takes place.

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When prompted, run the configuration scripts on each node.

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The output from the "orainstRoot.sh" file should look something like that listed below.

# /u01/app/oraInventory/orainstRoot.sh
Changing permissions of /u01/app/oraInventory.
Adding read,write permissions for group.
Removing read,write,execute permissions for world.

Changing groupname of /u01/app/oraInventory to oinstall.
The execution of the script is complete.
#

The output of the "root.sh" will vary a little depending on the node it is run on. Example output can be seen here (Node1, Node2).

Once the scripts have completed, return to the "Execute Configuration Scripts" screen on "ol7-122-rac1" and click the "OK" button.

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Wait for the configuration assistants to complete.

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If any of the configuration steps fail you should check the specified log to see if the error is a show-stopper or not. The only error I received was for time sychronization (PRVG-13606. .

PRVG-13606 : chrony daemon is not synchronized with any external time source on node ...
Provided you don't have any show-stoppers, it is safe to ignore the errors by clicking "Next" button.

Click the "Close" button to exit the installer.

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The grid infrastructure installation is now complete. We can check the status of the installation using the following commands.

$ grid_env
$ crsctl stat res -t
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details       
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ASMNET1LSNR_ASM.lsnr
               ONLINE  ONLINE       ol7-122-rac1             STABLE
               ONLINE  ONLINE       ol7-122-rac2             STABLE
ora.DATA.dg
               ONLINE  ONLINE       ol7-122-rac1             STABLE
               ONLINE  ONLINE       ol7-122-rac2             STABLE
ora.LISTENER.lsnr
               ONLINE  ONLINE       ol7-122-rac1             STABLE
               ONLINE  ONLINE       ol7-122-rac2             STABLE
ora.chad
               ONLINE  ONLINE       ol7-122-rac1             STABLE
               ONLINE  ONLINE       ol7-122-rac2             STABLE
ora.net1.network
               ONLINE  ONLINE       ol7-122-rac1             STABLE
               ONLINE  ONLINE       ol7-122-rac2             STABLE
ora.ons
               ONLINE  ONLINE       ol7-122-rac1             STABLE
               ONLINE  ONLINE       ol7-122-rac2             STABLE
ora.proxy_advm
               OFFLINE OFFLINE      ol7-122-rac1             STABLE
               OFFLINE OFFLINE      ol7-122-rac2             STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       ol7-122-rac2             STABLE
ora.LISTENER_SCAN2.lsnr
      1        ONLINE  ONLINE       ol7-122-rac2             STABLE
ora.LISTENER_SCAN3.lsnr
      1        ONLINE  ONLINE       ol7-122-rac2             STABLE
ora.MGMTLSNR
      1        ONLINE  ONLINE       ol7-122-rac2             169.254.137.110 192.
                                                             168.1.102,STABLE
ora.asm
      1        ONLINE  ONLINE       ol7-122-rac1             Started,STABLE
      2        ONLINE  ONLINE       ol7-122-rac2             Started,STABLE
      3        OFFLINE OFFLINE                               STABLE
ora.cvu
      1        ONLINE  ONLINE       ol7-122-rac1             STABLE
ora.mgmtdb
      1        ONLINE  ONLINE       ol7-122-rac2             Open,STABLE
ora.ol7-122-rac1.vip
      1        ONLINE  ONLINE       ol7-122-rac1             STABLE
ora.ol7-122-rac2.vip
      1        ONLINE  ONLINE       ol7-122-rac2             STABLE
ora.qosmserver
      1        ONLINE  ONLINE       ol7-122-rac1             STABLE
ora.scan1.vip
      1        ONLINE  ONLINE       ol7-122-rac2             STABLE
ora.scan2.vip
      1        ONLINE  ONLINE       ol7-122-rac2             STABLE
ora.scan3.vip
      1        ONLINE  ONLINE       ol7-122-rac2             STABLE
--------------------------------------------------------------------------------
$
At this point it is probably a good idea to shutdown both VMs and take snapshots. Remember to make a fresh zip of the ASM disks on the host machine, which you will need to restore if you revert to the post-grid snapshots.

$ cd /u04/VirtualBox/ol7-122-rac
$ zip PostGrid.zip *.vdi

  • Install the Database Software


Make sure the "ol7-122-rac1" and "ol7-122-rac2" virtual machines are started, then login to "ol7-122-rac1" as the oracle user and start the Oracle installer. Check that all services are up using "crsctl stat res -t", as described before.

I could have run the OUI in silent mode using this edited response file (db_install.rsp) with the following command.

$ cd /media/sf_12.2.0.1/database
$ ./runInstaller -silent -ignoreSysPrereqs -showProgress -responseFile /tmp/db_install.rsp

Instead, here's the interactive view.

$ cd /media/sf_12.2.0.1/database
$ ./runInstaller

Uncheck the security updates checkbox and click the "Next" button and "Yes" on the subsequent warning dialog.

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Select the "Install database software only" option, then click the "Next" button.

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Accept the "Oracle Real Application Clusters database installation" option by clicking the "Next" button.

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Make sure both nodes are selected, then click the "Next" button.

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Select the "Enterprise Edition" option, then click the "Next" button.

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Enter "/u01/app/oracle" as the Oracle base and "/u01/app/oracle/product/12.2.0.1/db_1" as the software location, then click the "Next" button.

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Select the desired operating system groups, then click the "Next" button. In this case we are only using the "dba" group.

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Wait for the prerequisite check to complete. If there are any problems either click the "Fix & Check Again" button, or check the "Ignore All" checkbox and click the "Next" button.

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If you are happy with the summary information, click the "Install" button.

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Wait while the installation takes place.

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When prompted, run the configuration script on each node. When the scripts have been run on each node, click the "OK" button.

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Click the "Close" button to exit the installer.

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Shutdown both VMs and take snapshots. Remember to make a fresh zip of the ASM disks on the host machine, which you will need to restore if you revert to the post-db snapshots.

$ cd /u04/VirtualBox/ol7-122-rac
$ zip PostDB.zip *.vdi

  • Create a Database


Make sure the "ol7-122-rac1" and "ol7-122-rac2" virtual machines are started, then login to "ol7-122-rac1" as the oracle user and start the Database Creation Asistant (DBCA).

I could have run the DBCA in silent mode using this edited response file (dbca.rsp) with the following command.

dbca -silent -responseFile /tmp/dbca.rsp

Instead, here's the interactive view.

$ dbca

Select the "Create Database" option and click the "Next" button.

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Select the "Typical configuration" option. Enter the container database name (cdbrac), pluggable database name (pdb1) and administrator password. Click the "Next" button

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Wait for the prerequisite checks to complete. If there are any problems either fix them, or check the "Ignore All" checkbox and click the "Next" button. If there are no problems you will go directly to the summary screen.

If you are happy with the summary information, click the "Finish" button.

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Wait while the database creation takes place.

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If you want to modify passwords, click the "Password Management" button. When finished, click the "Close" button.

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The RAC database creation is now complete.

  • Check the Status of the RAC

There are several ways to check the status of the RAC. The srvctl utility shows the current configuration and status of the RAC database.

$ srvctl config database -d cdbrac
Database unique name: cdbrac
Database name: cdbrac
Oracle home: /u01/app/oracle/product/12.2.0.1/db_1
Oracle user: oracle
Spfile: +DATA/CDBRAC/PARAMETERFILE/spfile.306.938083453
Password file: +DATA/CDBRAC/PASSWORD/pwdcdbrac.285.938081999
Domain: 
Start options: open
Stop options: immediate
Database role: PRIMARY
Management policy: AUTOMATIC
Server pools: 
Disk Groups: DATA
Mount point paths: 
Services: 
Type: RAC
Start concurrency: 
Stop concurrency: 
OSDBA group: dba
OSOPER group: 
Database instances: cdbrac1,cdbrac2
Configured nodes: ol7-122-rac1,ol7-122-rac2
CSS critical: no
CPU count: 0
Memory target: 0
Maximum memory: 0
Default network number for database services: 
Database is administrator managed
$

$ srvctl status database -d cdbrac
Instance cdbrac1 is running on node ol7-122-rac1
Instance cdbrac2 is running on node ol7-122-rac2
$

The V$ACTIVE_INSTANCES view can also display the current status of the instances.

$ sqlplus / as sysdba

SQL*Plus: Release 12.2.0.1.0 Production on Wed Mar 8 11:04:42 2017

Copyright (c) 1982, 2016, Oracle.  All rights reserved.


Connected to:
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production

SQL> SELECT inst_name FROM v$active_instances;


INST_NAME
--------------------------------------------------------------------------------
ol7-122-rac1.localdomain:cdbrac1
ol7-122-rac2.localdomain:cdbrac2

SQL>