版本：12.2.0.1.0 

单节点rac安装ru补丁报错：

OPATCHAUTO-72141: Grid patching cannot be performed in rolling mode on single node cluster

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使用如下模式进行补丁安装：

As part of bug 26367944, development added a validation to enforce user to pass -nonrolling along with opatchauto in single node GI.

So mentioned error message is coming is due to this fix, hence –nonrolling has to be passed to avoid this error. This is already present in 12.2.0.1.10.   

# opatchauto apply 26635815 -nonrolling

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[root@prod04 soft]# /u01/app/grid/OPatch/opatchauto apply /soft/26133434/

OPatchauto session is initiated at Tue Aug  7 11:38:00 2018

System initialization log file is /u01/app/grid/cfgtoollogs/opatchautodb/systemconfig2018-08-07_11-38-04AM.log.

Session log file is /u01/app/grid/cfgtoollogs/opatchauto/opatchauto2018-08-07_11-38-13AM.log

The id for this session is 8JBX

OPATCHAUTO-72141: Grid patching cannot be performed in rolling mode.

OPATCHAUTO-72141: Grid is installed only on a single node.

OPATCHAUTO-72141: Execute opatchauto in non-rolling mode.

OPatchAuto failed.

OPatchauto session completed at Tue Aug  7 11:38:20 2018

Time taken to complete the session 0 minute, 20 seconds

 opatchauto failed with error code 42