Nuwan Senanayake

This article describes how to install Oracle 12c 64bit database on Ubuntu 16.04 64bit. Download software  Download the Oracle software from OTN or MOS or get a downloaded zip file. OTN: Oracle Database 12c Release 1 (12.1.0.2) Software (64-bit). edelivery: Oracle Database 12c Release 1 (12.1.0.2) Software (64-bit)   Unpacking  You should have following two files downloaded now. linuxamd64_12102_database_1of2.zip linuxamd64_12102_database_2of2.zip Unzip and copy them to \tmp\databases NOTE: you might have to merge two unzipped folders to create a single folder. Create new groups and users Open a terminal and execute following commands. you might need root permission. groupadd -g 502 oinstall groupadd -g 503 dba groupadd -g 504 oper groupadd -g 505 asmadmin Now create the oracle user useradd -u 502 -g oinstall -G dba,asmadmin,oper -s /bin/bash -m oracle You will prompt to set to password. set a momorable password and write it down. ...

when trying to execute dbca from linux terminal got this error message. now execute the command xhost, you probably receiving No protocol specified xhost:  unable to open display ":0" issue is your user is not allowed to access the x server. You can use xhost to limit access for X server for security reasons. probably you are logged in as oracle user. switch back to default user and execute xhost again. you should see something like SI:localuser:nuwan solution is adding the oracle to access control list xhost +SI:localuser:oracle now go back to oracle user and try dbca it should be working