In the new features of Oracle Database 12cR2 ( DBCA can already be used to create dataguard on the standby side.

Below is the environment detail:

Type Hostname db_unique_name
Primary host01 orclpri
Standby host02 orclsby

Enable force logging on primary.

SQL> alter database force logging;
Database altered.
SQL> select name,force_logging from v$database;
—————————  —————————————
orclpri    YES

2. Create standby with DBCA. Assume we have listener is running on primary side.

[oracle@host02 ~]$ dbca -silent -createDuplicateDB -gdbName orclpri -primaryDBConnectionString host01:1521/orclpri -sid orclpri -createAsStandby -dbUniqueName orclsby
Enter SYS user password:
Listener config step
33% complete
Auxiliary instance creation
66% complete
RMAN duplicate
100% complete
Look at the log file "/u01/app/oracle/cfgtoollogs/dbca/orclsby/orclpri.log" for further details.

3. Standby Created successfully. Now we are going to login and check the roles.

[oracle@host02 ~]$ sqlplus / as sysdba
SQL*Plus: Release Production on Wed Aug 9 09:48:19 2017
Copyright (c) 1982, 2016, Oracle. All rights reserved.Connected to:
Oracle Database 12c Enterprise Edition Release – 64bit Production
SQL> select database_role from v$database;
SQL> show parameter db_unique_name
NAME           TYPE     VALUE
—————————————— ———————– ——————————
db_unique_name string   orclsby

Standby will automatically create pfile, spfile & orapwdfile.

[oracle@host02 dbs]$ ll
total 20
-rw-rw—- 1 oracle oinstall 1544 Aug 9 09:44 hc_orclpri.dat
-rw-r—– 1 oracle oinstall 68 Aug 9 09:42 initorclpri.ora
-rw-r—– 1 oracle oinstall 24 Aug 9 09:43 lkorclsby
-rw-r—– 1 oracle oinstall 3584 Aug 9 09:42 orapworclpri
-rw-r—– 1 oracle oinstall 3584 Aug 9 09:48 spfileorclpri.ora

Modify the tnsnames.ora on both sides.

orclpri =
(ADDRESS = (PROTOCOL = TCP)(HOST = host01)(PORT = 1521))
(SERVICE_NAME = orclpri)
orclsby =
(ADDRESS = (PROTOCOL = TCP)(HOST = host02)(PORT = 1521))
(SERVICE_NAME = orclsby)

Note: This feature only supports non-cdb database. You will get below error.

[FATAL] [DBT-16057] Specified primary database is a container database (CDB).
CAUSE: Duplicate database operation is supported only for non container databases.

Stay Tuned for more detail on DG Broker Configuration.

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