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I encountered this error while extending   2 node 12c cluster to 3 nodes. Error: [INS-30160] Installer has detected the nodes specified for add node operation have uncleaned Inventory. Cause: In /u01 directory there was an oraInventory directory exists. Though the directory is emptly oui still assuming that there is some content in this directory. Action: Delete oraInventory directory from nodes on which you are facing Issues. OUI will create this directory after successful addition of nodes. Hope this helps. Thanks for reading :) regards, Zaheer

I was installing Oracle 12.1.0.1 Database  software in a preparation of upgrading Oracle EBS R12.2 Database from version 11.2.0.3 to 12.1.0.1. When i started Installer from the stage location then it encountered error related to Inventory "[INS-21003] Installer has detected that an invalid inventory pointer location file was specified.." Error Stack from the Installation log file: INFO: Setting value for the property:id in the bean:configcmd INFO: Setting value for the property:platformcmdmap in the bean:configcmd INFO: Setting value for the property:id in the bean:configcmd INFO: Setting value for the property:platformcmdmap in the bean:configcmd INFO: Setting value for the property:id in the bean:configcmd INFO: Setting value for the property:platformcmdmap in the bean:configcmd INFO: Setting value for the property:id in the bean:configcmd INFO: Setting value for the property:platformcmdmap in the bean:configcmd INFO: Setting value for the property:configcmds in t...