opatchauto and Error in GetCurrentDir(): 13

Recently, cloning GI oracle home, I encountered into the strange error :

---------------------------Patching Failed---------------------------------

Command execution failed during patching in home: /u01/app/19/grid_1914, host: aaa

Command failed:  /u01/app/19.13.0/grid/oui/bin/runInstaller -updateNodeList ORACLE_HOME=/u01/app/19.13.0/grid CRS="false" -local

Command failure output:                                                                     

Error in GetCurrentDir(): 13

Error in GetCurrentDir(): 13

Error in GetCurrentDir(): 13                    

Starting Oracle Universal Installer...

                                                                                              

Checking swap space: 0 MB available, 500 MB required.    Failed <<<<

Some requirement checks failed. You must fulfill these requirements before

continuing with the installation,

The log of opatchauto session said that the installer couldn't create the temporary file for checking prerequisites before running opatch :

2022-02-14 19:49:06,805 INFO  [107] com.oracle.glcm.patch.auto.db.integration.controller.action.DBCommonPatchAction - shell-init: error retrieving current directory: getcwd: cannot access parent directories: Permission denied
sh: /command_output_20159: cannot create

Looked strange, isn't it ? The installer tried to create the file in the root (/) directory.

The solution was unexpectable : changing current working directory to $ORACLE_HOME.

Good Luck !