Summary of some problems in Oracle 11GR2 RAC construction process

Today, when we set up 11GR2 RAC on VBox, I encountered some problems and summarized the following

Environment

Redhat Linux 5.8 64-bit

Oracle 11.2.0.4 RAC+ASM

　　Issue One: Install grid infrastructure, error INS-40912

　Describe:

When installing grid infrastructure, after adding the second node hostname and VIP, next check error INS-40912, said Node 2 VIP is occupied, please select another address

This environment was reinstalled after uninstalling on the original RAC and did not restart the operating system

　Reason

The VIP assigned IP is occupied

　　Workaround

1. Restart the Node 2 host and reinstall OK (valid only for this case);

2. Modify VIP, reinstall

Issue two: Install grid infrastructure, check device check for ASM failed

　　Describe

When installing the grid infrastructure, check that device check for ASM has not passed

　　　　

prvf-9993 :"/dev/asm-diskb""0660""  {0640=      [yozhan1,yozhan2]}"]  -Cause:  Permissions of the device listed was Different than the required permissions.  -Action: Change the permissions on the  device listed or specify a different device.

However, the check found that the permission settings are not a problem

[Oracle@yozhan1dev]$ ls-l asm*BRW-RW----1Grid Asmadmin8, -The to xx: -asm-DISKBBRW-RW----1Grid Asmadmin8, +The to xx: -asm-DISKCBRW-RW----1Grid Asmadmin8, -The to xx: -asm-DISKDBRW-RW----1Grid Asmadmin8, -The to xx: -asm-DISKEBRW-RW----1Grid Asmadmin8, theThe to xx: -asm-DISKFBRW-RW----1Grid Asmadmin8, theThe -  -: $asm-DISKGBRW-RW----1Grid Asmadmin8, theThe -  -: theasm-DISKHBRW-RW----1Grid Asmadmin8, -The -  -: theasm-DISKIBRW-RW----1Grid Asmadmin8,144The -  -: theAsm-diskj

In all the error nodes are checked again, the permissions of the settings and the group is not a problem

　Reason

May be a bug for Oracle, reference the following MacLean document, you can ignore the warning

　Workaround

Select Ignore the warning, install OK;

　　Issue three: Check for task resolv.conf integrity warning when installing grid infrastructure

Describe

Install grid infrastructure, check task resolv.conf integrity do not pass

Reason

If DNS is not configured, detection of/etc/resolv.conf will fail

Workaround

1. You can ignore the warning and do not affect the installation

2. Configure in DNS, re-detect

Issue four: ASMCA when you create a disk group, the staus of the disk is Member State

　Describe

When you create a disk group in ASMCA, some disks correspond to a status of member and cannot be used to create a disk group

　Reason

The disk does not have a volume group created, that is volume groups

Workaround

Partition the disk into the volume group, reconfigure the permissions and the group, re-search the path disk, OK;

Summary :

In the process of installing the grid infrastructure, the inspection of the installation conditions is actually a check of the preparatory work, the problems encountered in this process, all of which indicate the preliminary preparation

Not sufficient. So before installing grid infrastructure, it is a prerequisite for a smooth completion of the grid installation. It is recommended to check with the Cluvfy tool before installation. About

The use and testing of the Cluvfy tool is provided in a later article.

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Summary of some problems in Oracle 11GR2 RAC construction process