Problems and Solutions for installing Oracle RAC 11gR2 on Oracle Virtualbox:
Problem 1: ssh user equivalence failed to check: ssh port 22: Not route to host
Solution: check user equivalence setup steps, or you can ./runInstaller.sh. It has the option to check ssh and also setup ssh.
Problem 2: If you have ethernet interface with dhcp / airport, for example eth2, is enabled, network checkup could be failed during pre-installation phase.
Solution: Run route –n to validate. Then you need to disable dhcp (eth2) to fix this issue.
Before:
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[root@si01 ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.20.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
192.168.10.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
192.168.10.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth2
0.0.0.0 192.168.10.1 0.0.0.0 UG 0 0 0 eth2
After disable eth2 (dhcp)
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[root@si01 ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.20.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
192.168.10.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
Problem 3: During the pre-check (from the runInstaller.sh), oracle complained about ASM path is not valid. It seems there was a bug associated with it.
Solution: oracleasm listdisk, scandisks, and changed ORACLEASM_GID = oinstall from /etc/sysconfig/oracleasm, then clicked on ignore and continue with the installation
Problem 4: root.sh generate the below error and ohasd failed to start up.
> CRS-4124: Oracle High Availability Services startup failed.
> CRS-4000: Command Start failed, or completed with errors.
ohasd failed to start: A specified file does not support the ioctl system cal.
Solution: Check and clean up /var/tmp/.oracle, /tmp/.oracle, /etc/oracle (check with specific location), then re-run root.sh
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