10g dataguard - physical standby database

Hi Guys,
DB1 <Primary> - Production
DB2 <Physial Standby> - DR
I will need to startup my DB2 in DR segment for testing.
If i perform the below, will it affect my Production DB? I need it to be up and running as well.
DR:
recover managed standby database cancel;
shutdown immediate;
startup nomount;
alter database mount standby database;
recover standby database until cancel;
alter database activate standby database;
thanks

Hi,
In 10g version, you can open database database with READ ONLY mode. In that case standby database
recieve primary generated changes but not apply .
I see you steps you using ALTER DATABASE ACTIVATE STANDBY DATABASE statement for activating database
Activate the standby database using the SQL ALTER DATABASE ACTIVATE STANDBY DATABASE statement. This converts the standby database to a primary database, creates a new reset logs branch, and opens the database.*
If you are not need convert standby database to primary database then , you must use only
ALTER DATABASE OPEN READ ONLY;
Regards
Mahir M. Quluzade
www.mahir-quluzade.com

Similar Messages

Oracle 10g Dataguard Physical Standby Database

When I set my dataguard group to "MAXIMIZE AVAILABILITY" the protection level is always RESYNCHRONIZATION.
It's normal ?
SQL> SELECT PROTECTION_MODE, PROTECTION_LEVEL, DATABASE_ROLE FROM V$DATABASE;
PROTECTION_MODE PROTECTION_LEVEL DATABASE_ROLE
MAXIMUM AVAILABILITY RESYNCHRONIZATION PHYSICAL STANDBY
SQL> show parameter log_archive_dest_2
NAME TYPE VALUE
log_archive_dest_2 string SERVICE=PIJ10G2 LGWR SYNC AFFIRM
SQL> show parameter log_archive_dest_state_2;
NAME TYPE VALUE
log_archive_dest_state_2 string ENABLE

this is my log on primary db :
Thread 1 advanced to log sequence 422
Current log# 1 seq# 422 mem# 0: /oradata/orapij10g/redologs/PIJ10G/redo01.log
Wed Oct 1Thread 1 cannot allocate new log, sequence 423
Private strand flush not complete
Current log# 1 seq# 422 mem# 0: /oradata/orapij10g/redologs/PIJ10G/redo01.log
Wed Oct 17 16:24:51 2007
Destination LOG_ARCHIVE_DEST_3 is SYNCHRONIZED
LNSc started with pid=34, OS id=21052
Wed Oct 17 16:24:56 2007
Destination LOG_ARCHIVE_DEST_3 is UNSYNCHRONIZED
Wed Oct 17 16:24:56 2007
Errors in file /oracle/ora10g/admin/PIJ10G/bdump/pij10g_lgwr_26248.trc:
ORA-16086: Message 16086 not found; No message file for product=RDBMS, facility=ORA
LGWR: Failed to archive log 2 thread 1 sequence 423 (16086)
Thread 1 advanced to log sequence 423
Current log# 2 seq# 423 mem# 0: /oradata/orapij10g/redologs/PIJ10G/redo02.log
I don't understand this error message. How can solve my probleme ?

Step by step 10g Dataguard , physical standby database setup metalink notes

On metalink i saw this note, but unable to find now if someone can help....

Note:248382.1 Creating a 10g Data Guard Physical Standby on Linux

Test physical standby database in dataguard

Hi all,
I had a successfull dataguard implementation for oracle 9r2.
Primary and standby databases are on different nodes, logs from primay are shipping and applying to physical standby database successfully.
As these database are for oracle 11i ebs, so for testing dataguard status i had created a table manually having columns date and remarks. Periodically i insert few records in this table in primary database and then chek this tabel in standby database (by opening in read only mode).
Now i want to test physical standby database with applications tier but don't want to disturb origional primary database.
as these are the normal switchover steps
1) at primary db
ALTER DATABASE COMMIT TO SWITCHOVER TO PHYSICAL STANDBY WITH SESSION SHUTDOWN;
2) at standby
ALTER DATABASE COMMIT TO SWITCHOVER TO PRIMARY;
3) at primary, now this will be the stand by database
SHUTDOWN IMMEDIATE;
STARTUP MOUNT;
4) at standby, now this will be the primary database
SHUTDOWN IMMEDIATE;
STARTUP
My concern is if i skip step 1 and 3 and only execute step 2 and 4, will that be applicable for my requirement, or there is some other way to achieve this goal.
Regards,
Ken

To avoid touching the primary production DB, you may try to use the following command on your standby database side:
alter database activate standby database;
This will turn your standby database to primary database, however the log will be reset and this means you will need to rebuild your DR.
Another way is to use flash back feature on your standby database, activate it and revert back to the flashback point when the DR testing is done.

How to create physical standby database without dataguard

Hi,
Can anyone please help me how to create Physical Standby Database without dataguard. As i am using Oracle 10.2.0.1 Standard Edition for production databases.
Please find the specifications of my server :
Database : Oracle 10.2.0.1(Standard Edition)
Server : Linux 4.0(32 bit machine)
As we know that Dataguard cannot be created in Standard Edition as we dont have that option in this edition. So please help me how to create the physical standby database.
Thanks in advance.
Regards,
Farooq

Hello,
I hope this link helps you out...
http://download.oracle.com/docs/cd/B19306_01/server.102/b14239/rcmbackp.htm
http://www.dbasupport.com/oracle/ora10g/manual_standby.shtml
Thanks & Regards
Pratik Lakhpatwala
Jr Oracle DBA
Edited by: Pratik.L on Dec 31, 2009 12:03 PM

Physical standby database Version 11g Creation over grid control 10g

We are useing oracale 11g enterprise edition and want to create a physical standby database on another machine:
On primary host we've installed "standard database" and turned on archive log mode over em.
On the standby host we've installed only oracle without a database and without a listener.
On a third machine we've installed grid control and registered the primary and standby hosts. Using EM with Data Grid I'm attempting to create a Physical Standby on standby host. Everything is working except for the last part as noted here:
SQL*Plus: Release 11.1.0.6.0 - Production on Do Apr 3 11:21:17 2008
Copyright (c) 1982, 2007, Oracle. All rights reserved.
SQL> SQL> Bei einer nicht hochgefahrenen Instance angemeldet.
SQL> SQL> ORA-32004: obsolete and/or deprecated parameter(s) specified
ORACLE-Instance hochgefahren.
Total System Global Area 535662592 bytes
Fixed Size          1334380 bytes
Variable Size          167773076 bytes
Database Buffers     360710144 bytes
Redo Buffers          5844992 bytes
SQL>
Datenbank wurde geändert.
SQL> Verbindung zu Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options beendet
dgcreate.DGrenameFiles: ALTER DATABASE RENAME FILE 'C:\ORACLE\ORADATA\TTDB1\SYSTEM01.DBF' to 'c:\oracle\product\11.1.0\db_1\oradata\dg3\SYSTEM01.dbf'
dgcreate.DGrenameFiles: SELECT STATUS FROM V$DATAFILE WHERE NAME = 'C:\ORACLE\ORADATA\TTDB1\SYSTEM01.DBF'
dgcreate.DGrenameFiles: ALTER DATABASE RENAME FILE 'C:\ORACLE\ORADATA\TTDB1\SYSAUX01.DBF' to 'c:\oracle\product\11.1.0\db_1\oradata\dg3\SYSAUX01.dbf'
dgcreate.DGrenameFiles: SELECT STATUS FROM V$DATAFILE WHERE NAME = 'C:\ORACLE\ORADATA\TTDB1\SYSAUX01.DBF'
dgcreate.DGrenameFiles: ALTER DATABASE RENAME FILE 'C:\ORACLE\ORADATA\TTDB1\UNDOTBS01.DBF' to 'c:\oracle\product\11.1.0\db_1\oradata\dg3\UNDOTBS01.dbf'
dgcreate.DGrenameFiles: SELECT STATUS FROM V$DATAFILE WHERE NAME = 'C:\ORACLE\ORADATA\TTDB1\UNDOTBS01.DBF'
dgcreate.DGrenameFiles: ALTER DATABASE RENAME FILE 'C:\ORACLE\ORADATA\TTDB1\USERS01.DBF' to 'c:\oracle\product\11.1.0\db_1\oradata\dg3\USERS01.dbf'
dgcreate.DGrenameFiles: SELECT STATUS FROM V$DATAFILE WHERE NAME = 'C:\ORACLE\ORADATA\TTDB1\USERS01.DBF'
dgcreate.DGrenameFiles: ALTER DATABASE RENAME FILE 'C:\ORACLE\ORADATA\TTDB1\EXAMPLE01.DBF' to 'c:\oracle\product\11.1.0\db_1\oradata\dg3\EXAMPLE01.dbf'
dgcreate.DGrenameFiles: SELECT STATUS FROM V$DATAFILE WHERE NAME = 'C:\ORACLE\ORADATA\TTDB1\EXAMPLE01.DBF'
dgcreate.DGrenameFiles: ALTER DATABASE RENAME FILE 'C:\ORACLE\ORADATA\TTDB1\REDO01.LOG' to 'c:\oracle\product\11.1.0\db_1\oradata\dg3\REDO01.log'
dgcreate.DGrenameFiles: ALTER DATABASE RENAME FILE 'C:\ORACLE\ORADATA\TTDB1\REDO02.LOG' to 'c:\oracle\product\11.1.0\db_1\oradata\dg3\REDO02.log'
dgcreate.DGrenameFiles: ALTER DATABASE RENAME FILE 'C:\ORACLE\ORADATA\TTDB1\REDO03.LOG' to 'c:\oracle\product\11.1.0\db_1\oradata\dg3\REDO03.log'
dgcreate.DGrenameFiles: ALTER DATABASE CLEAR LOGFILE GROUP 1
dgcreate.DGrenameFiles: ALTER DATABASE CLEAR LOGFILE GROUP 2
dgcreate.DGrenameFiles: ALTER DATABASE CLEAR LOGFILE GROUP 3
dgcreate.DGgetRecoverySCN: SELECT MAX(NEXT_CHANGE#) FROM V$ARCHIVED_LOG
dgcreate.DGrecoverStby: ALTER DATABASE RECOVER AUTOMATIC FROM '%ORACLE_HOME%\RDBMS' STANDBY DATABASE UNTIL CHANGE 1061001
dgcreate.DGrecoverStby: ALTER DATABASE RECOVER CANCEL
dgcreate.DGrecoverStby: ALTER DATABASE OPEN READ ONLY
SQL Error: ORA-16004: Sciherungs-Datenbank muss wiederhergestellt werden
ORA-01152: Backup-Datei zum Wiederherstellen der Datei 1 war nicht alt genug
ORA-01110: Datendatei 1: 'C:\ORACLE\PRODUCT\11.1.0\DB_1\ORADATA\DG3\SYSTEM01.DBF' (DBD ERROR: OCIStmtExecute)
What is to do?
What mean's in this case:
"ORA-01152 file string was not restored from a sufficiently old backup
Cause: An incomplete recovery session was started, but an insufficient number of redo logs were applied to make the database consistent. This file is still in the future of the last redo log applied. The most likely cause of this message is forgetting to restore the file from backup before doing incomplete recovery.
Action: Apply additional redo log files until the database is consistent or restore the datafiles from an older backup and repeat recovery."

Thanks for your immediate reply,
but there's a problem: We don't create the standby database manually. The creation is done by data guard over grid control. And the "automatic" creation stopps at this point.
Unfortunatly we don't know, wich steps of a manuall standby database creation are done and wich steps are not done at this point.
The oracle documentation (for release 11g) to create a manuall standby database is "B28294-02". But there's no step 5 "alter database recover managed standby database disconnect from session". Do you mean step 4 of chapter 3.2.6?
Is there no way, to create a standby database automatically over grid control? Or do we have to do something else before creating the physical standby database? Perhaps we have to create a full backup after switching to archive log mode?

Creating physical standby database on same machine with dataguard

hi every one
i m new in oracle databases,
i read documentation to create physical standby databases,
now i install virtual machine (vmware) on my system,
i install windows xp on this vm and oracle 9i
now i want to create standby database on the same machine in some other drive configured with datagurd
virtual machine
OS windows xp
database oracle 9i
plz reply me how i do this
explain clearly step by step.
plz reply me in detail

When you need to have the standby database on the same server as the master, use lock_name_space in the init.ora.
This parameter permits this to occur without having to worry about changing the db_name.
http://www.oug-ottawa.org/pls/htmldb/f?p=103:21:729607614317189728::::P21_TIP_NUM:821

How to open a "manual" Physical standby database in read/write mode

Hi,
I am running Oracle Database 10g Release 10.2.0.3.0 - 64bit Production Standard Edition on Linux version 2.6.9-42.0.8.ELsmp ([email protected]) (gcc version 3.4.6 20060404 (Red Hat 3.4.6-3))
I've created a physical standby database, but since I am running Standard Edition, I am not using the DataGuard features. I use the rsync utility to copy over the archivelogs to the standby database, and I apply them periodically to the standby database.
The standby database is started this way :
startup nomount pfile='/u01/oradata/orcl/initorcl.stdby';
alter database mount standby database;
Everything runs perfectly fine, I can do "alter database open read only" and then I can do selects into tables to confirm that everything is up to date.
The thing is, if I shutdown immediate the database, then do just startup :
shutdown immediate;
startup;
The database opens with no error messages, but is still in read-only mode...
I read that the default behavior for a standby database is to open read-only, like I am experiencing, but I would like to know what is the right way to open it correctly in read-write mode (I understand that after that, my standby will not be standby anymore and that I will have to recreate my standby database).
Thanks,
Mat

Hello,
There're features which allows you to open a Standby database in Read/Write mode but for all I know
it needs Entreprise Edition.
In Enterprise Edition you can use Logical Standby database. More over, for Physical standby there's
a way by using flashback database so as to rolling backward the database and avoiding to recreate
the Standby.
In Standard Edition I'm afraid that you'll have to recreate your Standby database.
Best regards,
Jean-Valentin

DB link for physical standby database

Hi All ,
I'm facing the below error on primary while trying to create a db link pointing to the 10g standby database which is in mount stage.
SQL> create database link synct connect to system identified by 123 using 'stdby';
Database link created.
SQL> select max(sequence#) from v$archived_log@synct where applied='YES';
select max(sequence#) from v$archived_log@synct where applied='YES'
ERROR at line 1:
ORA-02068: following severe error from SYNCT
ORA-01033: ORACLE initialization or shutdown in progress
Database version is 10.2 standard edition
My requirement is i need to get max(sequence#) of standby database from primary database using db link.
what i was trying to do is
on primary get max(sequence#) & get max(sequence#) of standby using db link and compare both if the gap differene is more than 10 send a mail.
Any suggestions will be really helpful

976422 wrote:
Hi All ,
I'm facing the below error on primary while trying to create a db link pointing to the 10g standby database which is in mount stage.
SQL> create database link synct connect to system identified by 123 using 'stdby';
Database link created.
SQL> select max(sequence#) from v$archived_log@synct where applied='YES';
select max(sequence#) from v$archived_log@synct where applied='YES'
ERROR at line 1:
ORA-02068: following severe error from SYNCT
ORA-01033: ORACLE initialization or shutdown in progress
Post Standby/DataGuard/ADG all questions further in Oracle Discussion Forums » High Availability » Data Guard
If you try to connect any users other than SYS in standby the error is very much expected. Of course you can connect with other users if you open database in OPEN READ ONLY mode, from 11gRx you can connect with other users even MRP is running if you are using ADG(active Data Guard licensed) .
I like to know, what you want to achieve by creating DB Link on physical standby database? Which is not allowed.
Database version is 10.2 standard edition
My requirement is i need to get max(sequence#) of standby database from primary database using db link.
what i was trying to do is
on primary get max(sequence#) & get max(sequence#) of standby using db link and compare both if the gap differene is more than 10 send a mail.
Any suggestions will be really helpfulNote:- Standard edition, Data Guard not enabled.
To use this you should use Oracle Net Service, you no need of DB Links.
Ex:- sqlplus sys/****@standby as sysdba
Here standby refers to Oracle net service, Where you will have entries in $ORACLE_HOME/network/admin/tnsnames.ora file.
Edited by: CKPT on Dec 12, 2012 2:01 PM

Upgrading the primary and physical standby database

Solaris 9
oracle 9i (9.2.0.8)
upgrade to 10g (10.2.0.3)
Hi,
I would like to know how to upgrade database in dataguard envronment.(primary and remote physical standby database)
Is rolling upgrade possible in this case?
Or any steps or Document is appreciated.
Thanks.
Message was edited by:
user539835

Read this Metalink Note:407040.1

Physical standby database error

Hi,
I try to create physical standby in my local machine using oracle 10g
version :10.2.0.1.0
Os: windows xp.
I followed steps and parameter files
on primary :-
sql>alter database force logging;
orcl.__db_cache_size=155189248
orcl.__java_pool_size=4194304
orcl.__large_pool_size=4194304
orcl.__shared_pool_size=75497472
orcl.__streams_pool_size=0
*.audit_file_dest='D:\oracle\product\10.2.0/admin/orcl/adump'
*.background_dump_dest='D:\oracle\product\10.2.0/admin/orcl/bdump'
*.compatible='10.2.0.1.0'
*.control_files='D:\oracle\product\10.2.0\oradata\orcl\control01.ctl','D:\oracl
e\product\10.2.0\oradata\orcl\control02.ctl','D:\oracle\product\10.2.0\orad
ata\orcl\control03.ctl'
*.core_dump_dest='D:\oracle\product\10.2.0/admin/orcl/cdump'
*.db_block_size=8192
*.db_domain=''
*.db_file_multiblock_read_count=16
*.db_name='orcl'
*.db_unique_name='orcl'
*.log_archive_config='DG_CONFIG=(orcl,stby)'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=orclXDB)'
*.job_queue_processes=10
*.open_cursors=300
*.pga_aggregate_target=80740352
*.processes=150
*.remote_login_passwordfile='EXCLUSIVE'
*.sga_target=244318208
*.undo_management='AUTO'
*.undo_tablespace='UNDOTBS1'
*.user_dump_dest='D:\oracle\product\10.2.0/admin/orcl/udump'
*.log_archive_dest_1='LOCATION=D:\oracle\archive
VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=orcl'
*.log_archive_dest_2='SERVICE=stby LGWR ASYNC
VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=stby'
*.log_archive_format=%t_%s_%r.arc
*.log_archive_dest_state_1=ENABLE
*.log_archive_dest_state_2=ENABLE
On standby
orcl.__db_cache_size=155189248
orcl.__java_pool_size=4194304
orcl.__large_pool_size=4194304
orcl.__shared_pool_size=75497472
orcl.__streams_pool_size=0
*.audit_file_dest='D:\stby\adump'
*.background_dump_dest='D:\stby\bdump'
*.compatible='10.2.0.1.0'
*.control_files='D:\stby\ctrl.ctl'
*.core_dump_dest='D:\stby\cdump'
*.db_block_size=8192
*.db_domain=''
*.db_file_multiblock_read_count=16
*.db_name='orcl'
*.db_unique_name='stby'
*.log_archive_config='DG_CONFIG=(orcl,stby)'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=orclXDB)'
*.job_queue_processes=10
*.open_cursors=300
*.pga_aggregate_target=80740352
*.processes=150
*.remote_login_passwordfile='NONE'
*.sga_target=244318208
*.undo_management='AUTO'
*.undo_tablespace='UNDOTBS1'
*.user_dump_dest='D:\stby\udump'
*.db_file_name_convert='D:\oracle\product\10.2.0\oradata\orcl','D:\stby'
*.log_file_name_convert='D:\oracle\product\10.2.0\oradata\orcl','D:\stby'
*.log_archive_dest_1='LOCATION=D:\oracle\archive
VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=stby'
*.log_archive_dest_2='SERVICE=orcl LGWR ASYNC
VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE)
DB_UNIQUE_NAME=orcl'
*.standby_archive_dest='D:\stby\archive'
*.log_archive_dest_state_1=ENABLE
*.log_archive_dest_state_2=ENABLE
*.standby_file_management='AUTO'
*.fal_server='orcl'
*.fal_client='stby'
SQL> conn / as sysdba
Connected to an idle instance.
SQL> startup pfile=D:\stby\initstby.ora nomount;
ORACLE instance started.
Total System Global Area 247463936 bytes
Fixed Size 1248332 bytes
Variable Size 79692724 bytes
Database Buffers 159383552 bytes
Redo Buffers 7139328 bytes
SQL> alter database mount standby database;
Database altered.
SQL> alter database recover managed standby database disconnect from session;
Database altered.
SQL> alter database open read only;
alter database open read only
ERROR at line 1:
ORA-01154: database busy. Open, close, mount, and dismount not allowed now
SQL> recover managed standby database cancel;
Media recovery complete.
SQL> alter database open read only;
Database altered.
SQL> select sequence#,first_time,next_time from v$archived_log order by sequence
no rows selected
No archive s generated in standby ..
what i mistake.
Reagrds
S.Azar

Anand... wrote:
Firstly you can use "*select sequence#,first_time,next_time from v$archived_log order by sequence#;"* command in mount stage itself.No need to open the standby database in ready only mode.
No rows selected in mount stage also.
The V$ARCHIVED_LOG fixed view on the physical standby database shows all the archived redo log files received from the primary database.
sql> select * from v$archived_log;
no rows selected.
and No archived logs received from primary database to physical standby . i think here i wrongly configure parameter file.
sql> RECOVER MANAGED STANDBY DATABASE DISCONNECT FROM SESSION; -- > start Redo Apply
When you do log switch on the primary are the archive logs getting transferred to the standby database???Is there some error in the alert log file in the primary database.
No..
>
[http://advait.wordpress.com/2007/06/12/setting-up-oracle-dataguard-for-10g/]
Regards
S.Azar

What are the differences of creating a physical standby database with ASM?

I want to create a physical standby database for my 10g(10.2.0.1) database. But it is using ASM. Is it possible to create a standby database for a database using ASM?
What are the differences of creating a physical standby database with ASM?

tell us what your research shows and we'll try to
validate it. I am simulating Oracle ASM on a PC and I want to try
DataGuard on it now. So I am trying to create DataGuard
on an ASM system. The purpose is only learning and test.That's telling us how you are researching, not what you have observed.
Your research could have included looking at the documetation, and you might have found http://download.oracle.com/docs/cd/B19306_01/server.102/b14239/scenarios.htm#sthref1642
which discusses exactly what you are looking for.
Message was edited by:
Hans Forbrich

Dgmgr - physical standby database

Hi,
We are having Oracle 10g R2 (latest patch) . We have created a primary - physical standby database configuration. While the show database verbose 'dbname' in dgmgrl shows "success" for standby , it flags the following error for the primary
Warning: ORA-16801: redo transport-related property is inconsistent with database setting
Can this be ignored safely ? If not how to eliminate this.
Also brief me safest way to switch over between primary and standby databases.
Thanks.

This warning occurs when you mix manual configuration and dataguard broker, use only one method,not both:
Oracle Error :: ORA-16801
redo transport-related property is inconsistent with database setting
Cause
The values of one or more redo transport-related configuration properties were inconsistent with database in-memory settings or server parameter file settings. This may happen by altering initialization parameters directly instead of altering property values using Data Guard broker.
Action
Query property the InconsistentLogXptProps on the primary database or check the Data Guard broker log to find which properties are set inconsistently. Reset these properties to make them consistent with the database settings. Alternatively, enable the database or the entire configuration to allow the configuration property settings to be propagated to to the initialization parameters.
Werner

Creating physical standby databases with DG Broker & OEM

Hi guys,
I manage 8i, 9i & 10g databases through OEM 10.2.0.2.
Today, I would like to create physical standby db for the most important applications. Because I'm a lazy guy, I'd like to do it the easiest way, with GUI and wizzards provided by OEM.
1. Do you know any tutorial on the Internet that would help to do it easily ? My only source up to now is the official DB broker documentation (http://download.oracle.com/docs/cd/B19306_01/server.102/b14230/toc.htm), which is 300 pages long like every Oracle doc. I'd appreciate any tutorial that could lead me straight to the essential. I've heard that is not so tricky to create a physical standby db
2. Is the procedure really different to create (and then manage) a physical standby database on Oracle 8i, 9i and 10g ? Is it possible to do it through DB Broker and OEM for every version ?
thank you for your help
Antoine

Antionio,
Oracle Documentation is the best source of configuring any Oracle component.
But, If you do not want to read the entire doc, and want to configure Dataguard Broker (without OEM), then here is the Link.
http://www.oracledba.org/10g/dr/10gR2_dataguard_RAC_to_RAC.html#Configure_Dataguard_Broker:

Enable Physical Standby Database

Hi,
I am working on Linix with Oracle Database 10g, I am preforming a test with the data guard
DGMGRL for Linux: Version 10.2.0.3.0 - Production
Copyright (c) 2000, 2005, Oracle. All rights reserved.
Welcome to DGMGRL, type "help" for information.
DGMGRL> connect sys/oracle@DRCP
Connected.
DGMGRL> show configuration
Configuration
Name:                DB123
Enabled:             YES
Protection Mode:     MaxAvailability
Fast-Start Failover: DISABLED
Databases:
PROD   - Primary database
DRCP - Physical standby database
Current status for "DB123":
SUCCESS
DGMGRL> failover to 'DRCP'
Performing failover NOW, please wait...
Failover succeeded, new primary is "DRCP"
DGMGRL> SHOW CONFIGURATION;
Configuration
Name:                DB123
Enabled:             YES
Protection Mode:     MaxPerformance
Fast-Start Failover: DISABLED
Databases:
PROD   - Physical standby database (disabled)*
DRCP - Primary database
Current status for "DB123":
SUCCESS
My question is how to move back to PROD and enable it, what are the options?
Please advice. Thank you

Hi,
Since you have performed a FAILOVER, this is a one way process. If you were trying to test the role transitions, then you could have gone with SWITCHOVER which is a 2 way process.
Now, you are having only 1 database which is behaving as primary database and you do not have the standby database. If flashback was enabled on your old primary database, then you can reinstate it to behave as standby database.
Since you are using DGMGRL, you can refer this http://gavinsoorma.com/2009/06/using-flashback-to-reinstate-a-standby-after-a-failover/
If using SQL, then you can refer http://shivanandarao.wordpress.com/2012/08/28/dataguard-failover/

10g dataguard - physical standby database

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