A easy and simple way to establish Oracle ADG

Yes, thanks to

Then, I can give simple and reasy way to make it.

Suppose hosts and IPs like that:

150.150.186.16 linux3 (primary)
150.150.186.26 linux4 (secondary or standby)

On primary node:

(1) parameter:
SQL> show parameter db_name
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_name string TEST
SQL> show parameter db_uniq
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_unique_name string TEST
SQL> show parameter LOG_ARCHIVE_CONFIG
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_config string DG_CONFIG=(TEST,TESTDR)
SQL>show parameter LOG_ARCHIVE_DEST_1
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_1 string LOCATION=/oracle/archive
SQL> show parameter LOG_ARCHIVE_DEST_2
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_2 string SERVICE=TESTDR NOAFFIRM ASYNC
VALID_FOR=(ONLINE_LOGFILES,PRI
MARY_ROLE) DB_UNIQUE_NAME=TEST
DR

SQL> show parameter log_archive_dest_state_2
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_state_2 string ENABLE
SQL> show parameter log_archive_forma
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_format string %t_%s_%r.arc
SQL> show parameter log_archive_max_processes
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_max_processes integer 30
SQL> show parameter remote_login_passwordfile
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
remote_login_passwordfile string EXCLUSIVE
SQL> show parameter fal_server
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
fal_server string TESTDR
SQL> show parameter standby_file_management
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
standby_file_management string AUTO
SQL> show parameter service
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
service_names string TEST

The redo log would better like:
SQL> select member from v$logfile;
MEMBER
--------------------------------------------------------------------------------
/oracle/system/redo01.log
/oracle/system/redo02.log
/oracle/system/redo03.log
/oracle/system/standby_redo01.log
/oracle/system/standby_redo02.log
/oracle/system/standby_redo03.log
/oracle/system/standby_redo04.log

(2) listener and TNS
[oracle@linux3 admin]$ cat listener.ora
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = linux3)(PORT = 1521))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
)
)

SID_LIST_LISTENER =
(SID_DESC =
(ORACLE_HOME = /oracle/app/product/11.2.0)
(SID_NAME = TEST)
)
)
ADR_BASE_LISTENER = /oracle
[oracle@linux3 admin]$ cat tnsnames.ora
TEST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = linux3)(PORT = 1521))
)
(CONNECT_DATA =
### (SID = TEST)
(SERVICE_NAME = TEST) (UR = A)
)
)
TESTDR =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = linux4)(PORT = 1521))
)
(CONNECT_DATA =
### (SID = TEST)
(SERVICE_NAME = TESTDR) (UR = A)
)
)

On Secondary node:
(1) parameter
SQL> show parameter db_name
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_name string TEST
SQL> show parameter db_uniq
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_unique_name string TESTDR
SQL> show parameter LOG_ARCHIVE_CONFIG
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_config string DG_CONFIG=(TEST,TESTDR)
SQL> show parameter LOG_ARCHIVE_DEST_1
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_1 string LOCATION=/oracle/archive
SQL> show parameter LOG_ARCHIVE_DEST_2
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_2 string SERVICE=TEST NOAFFIRM ASYNC VA
LID_FOR=(ONLINE_LOGFILES,PRIMA
RY_ROLE) DB_UNIQUE_NAME=TEST
SQL> show parameter log_archive_dest_state_2
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_state_2 string ENABLE
SQL> show parameter log_archive_format
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_format string %t_%s_%r.arc
SQL> show parameter log_archive_max_processes
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_max_processes integer 30
SQL> show parameter remote_login_passwordfile
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
remote_login_passwordfile string EXCLUSIVE
SQL> show parameter fal_server
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
fal_server string TEST
SQL> show parameter standby_file_management
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
standby_file_management string AUTO
SQL> show parameter service
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
service_names string TESTDR
The redo log would better like:
SQL> select member from v$logfile;
MEMBER
--------------------------------------------------------------------------------
/oracle/system/redo01.log
/oracle/system/redo02.log
/oracle/system/redo03.log
/oracle/system/standby_redo01.log
/oracle/system/standby_redo02.log
/oracle/system/standby_redo03.log
/oracle/system/standby_redo04.log

(2) listener and TNS
[oracle@linux4 admin]$ cat listener.ora
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = linux4)(PORT = 1521))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
)
)
SID_LIST_LISTENER =
(SID_DESC =
(ORACLE_HOME = /oracle/app/product/11.2.0)
(SID_NAME = TEST)
(SERVICE_NAME = TESTDR)
)
)
ADR_BASE_LISTENER = /oracle
[oracle@linux4 admin]$ cat tnsnames.ora
TEST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = linux3)(PORT = 1521))
)
(CONNECT_DATA =
(SID = TEST)
(SERVICE_NAME = TEST) (UR = A)
)
)
TESTDR =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = linux4)(PORT = 1521))
)
(CONNECT_DATA =
(SID = TEST)
(SERVICE_NAME = TESTDR) (UR = A)
)
)

So , at the end, when both nodes are ready. You execute following command like:

SQL> startup nomount;
ORACLE instance started.
Total System Global Area 3657797632 bytes
Fixed Size 2258600 bytes
Variable Size 805308760 bytes
Database Buffers 2835349504 bytes
Redo Buffers 14880768 bytes
SQL> alter database mount standby database;
SQL> alter database recover managed standby database disconnect from session;
Database altered.
then you just get an normal style DG
SQL> select name,open_mode,database_role from v$database;
NAME OPEN_MODE DATABASE_ROLE
--------- -------------------- ----------------
TEST MOUNTED PHYSICAL STANDBY

If we want to get active data guard. we should do like :
SQL> startup nomount;
ORACLE instance started.
Total System Global Area 3657797632 bytes
Fixed Size 2258600 bytes
Variable Size 805308760 bytes
Database Buffers 2835349504 bytes
Redo Buffers 14880768 bytes
SQL> alter database mount standby database;
Database altered.
SQL> alter database open read only;
Database altered.
SQL> alter database recover managed standby database disconnect from session;
Database altered.
SQL> select name,open_mode,database_role from v$database;
NAME OPEN_MODE DATABASE_ROLE
--------- -------------------- ----------------
TEST READ ONLY WITH APPLY PHYSICAL STANDBY

Then , please enjoy yourself