[Oracle DataBase Server 12.1 installation on Oracle Linux 6.7 with ASM and GRID]: Oracle instance creation

$ export DISPLAY=192.168.1.5:0.0

$ dbca

oracle database software installation

To get EM connection port:

SQL> select dbms_xdb_config.gethttpsport() from dual;

DBMS_XDB_CONFIG.GETHTTPSPORT()
------------------------------
			  5500

For connect to EM:
https://192.168.1.11:5500/em/

Steps after installation

$ vi /etc/oratab

+ASM:/u01/oracle/grid/12.1:N
orcl12:/u01/oracle/database/12.1:N

replace on:

+ASM:/u01/oracle/grid/12.1:Y
orcl12:/u01/oracle/database/12.1:Y

SQL> select name, total_mb, free_mb from v$asm_diskgroup;

NAME				 TOTAL_MB    FREE_MB
------------------------------ ---------- ----------
DATA				   163836     159704
ARCH				    81918      81452