[INS-21003] Installer has detected that an invalid inventory pointer location file was specifies Posted on February 1, 2016December 23, 2018 by Osama Mustafa in Database This error appear while trying to install oracle database 12c on Linux 64bit to solve it i forgot to add the group on oraInst.loc vi /etc/oraInst.loc and add the below line :- inst_group=dba ( depend on your group). Thanksosama