Configuring Data Guard in Heterogeneous

Configuring Data Guard in Heterogeneous Environment With the release of Oracle database 11g, the primary and standby database in Data Guard configuration can be created in cross-platform environment. They can have different operating systems, os binaries (32/64 bit), oracle binaries (32/64 bit) and different CPU architecture. Following is the step-by-step approach to create c ross-plateform (AIX-Linux) DG configuration. Environment:

The following table is the summary of Hardware, OS and Database configuration used:

Operaing System Database

Primary 6 AIX-Based Systems (64-bit) Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production

Standby Oracle Linux x86_64 5.5 Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production

Orcl Orcl Orcl

orclstb

Hostname Oracle SID DB Unique Name Service Name ORACLE BASE

orclstb orcl

ORACLE HOME Data Files

Preparing the Primary Database

select name from from v$database; v$database; orcl SQL> SELECT * FROM v$version; BANNER ------------------------------------------------------------------------------Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 64bit Production PL/SQL Release 11.2.0.4.0 - Production CORE

11.2.0.4.0

Production

TNS for IBM/AIX RISC System/6000: Version 11.2.0.4.0 Production NLSRTL Version 11.2.0.4.0 - Production STEP 1. Check if database is in ARCHIVELOG mode. Since data guard is dependent on redo data to maintain standby database, the first step to make sure is

you are running database in Archive Log mode If database is in NOARCHIVELOG mode, use the following step to bring it in ARCHIVELOG mode.

SQL> archive log list Database log mode

Archive Mode

Automatic archival

Enabled

Archive destination

/u02/orcl/archive/

Oldest online log sequence

3

Next log sequence to archive 5 Current log sequence

5

STEP 2. Enable FORCE LOGGING

SQL> SELECT force_logging FROM v$database;

FOR --NO SQL> alter database force logging;

Database altered. SQL> SELECT force_logging FROM v$database;

FOR --YES STEP 4. Add Standby Redo Log Create standby log files on primary database. Standby Redo logs are used to store redo information

received from another database (in this case primary). SRL needs to be of the same size as online redo logs (ORL). It is recommened to have one more SRL group than the online redo log. select * from v$logfile;

+DATA/orcl/onlinelog/group_3.367.863944527 +DATA/orcl/onlinelog/group_2.366.863944527 +DATA/orcl/onlinelog/group_1.370.863944527 ALTER ALTER ALTER ALTER

DATABASE DATABASE DATABASE DATABASE

ADD ADD ADD ADD

STANDBY STANDBY STANDBY STANDBY

LOGFILE LOGFILE LOGFILE LOGFILE

GROUP GROUP GROUP GROUP

4 5 6 7

'+DATA' '+DATA' '+DATA' '+DATA'

SIZE SIZE SIZE SIZE

50M; 50M; 50M; 50M;

select * from v$logfile;

1

3

ONLINE

+DATA/orcl/onlinelog/group_3.367.863944527 NO

2

2

ONLINE


3

1

ONLINE


4

4

STANDBY


5

5

STANDBY


6

6

STANDBY


7

7

STANDBY


STEP 5. Add entries in the parameter file

SQL> create pfile from spfile;

File created.

Existing parameter: orcl.__db_cache_size=905969664 orcl.__java_pool_size=16777216 orcl.__large_pool_size=33554432 orcl.__oracle_base='/u01/app/oracle'#ORACLE_BASE set from environment orcl.__pga_aggregate_target=838860800 orcl.__sga_target=1258291200 orcl.__shared_io_pool_size=0 orcl.__shared_pool_size=285212672 orcl.__streams_pool_size=0 *.audit_file_dest='/u01/app/oracle/admin/orcl/adump' *.audit_trail='db' *.compatible='11.2.0.4.0' *.control_files='+DATA/orcl/controlfile/current.371.863944525' *.db_block_size=8192 *.db_create_file_dest='+DATA' *.db_domain='' *.db_name='orcl' *.diagnostic_dest='/u01/app/oracle' *.dispatchers='(PROTOCOL=TCP) (SERVICE=orclXDB)' *.log_archive_dest_1='location=/u02/orcl/archive/' *.memory_target=2097152000 *.open_cursors=300 *.processes=150 *.remote_login_passwordfile='EXCLUSIVE' *.undo_tablespace='UNDOTBS1'

Primary role/LOG parameter: #Added Parameter #Primary role related parameter incl. LOG_ARCHIVE parameter. DB_UNIQUE_NAME=orcl LOG_ARCHIVE_CONFIG='DG_CONFIG=(orcl,orclstb)' LOG_ARCHIVE_DEST_2='SERVICE=orclstb LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=orclstb' LOG_ARCHIVE_DEST_STATE_2=ENABLE REMOTE_LOGIN_PASSWORDFILE=EXCLUSIVE LOG_ARCHIVE_MAX_PROCESSES=5

Standby role parameter: #Standby role related parameter FAL_SERVER=orcl FAL_CLIENT=orclstb DB_FILE_NAME_CONVERT='+DATA/orcl/','+DATA/orclstb/' LOG_FILE_NAME_CONVERT='+DATA/orcl/','+DATA/orclstb/' STANDBY_FILE_MANAGEMENT=AUTO

Now create server parameter file from pfile and startup database using spfile.

SQL> create pfile from spfile;

File created.

SQL> shutdown immediate Database closed. Database dismounted. ORACLE instance shut down. SQL> create spfile from pfile;

File created.

SQL> startup ORACLE instance started.

Total System Global Area 2087780352 bytes Fixed Size

2247952 bytes

Variable Size

1241514736 bytes

Database Buffers Redo Buffers

838860800 bytes 5156864 bytes

Database mounted. Database opened. Prepare Standby Database STEP 6. Prepare Standby In order to connect to the standby database create a password file on the physical standby database

(using ORAPWD) with the same password used by primary SYS account.

[oracle@klbstbkt2 dbs]$ cd $ORACLE_HOME/dbs [oracle@klbstbkt2 dbs]$ [oracle@klbstbkt2 dbs]$ orapwd file=orapworcl password=oracle_4U Create an initorcl.ora file for standby (support) database with a single parameter DB_NAME. db_name=orcl

Set the OARCLE_SID variable and start the physical standby in NOMOUNT mode using parameter file.

[oracle@klbstbkt2 dbs]$ export ORACLE_SID=orcl [oracle@klbstbkt2 dbs]$ sqlplus /nolog

SQL*Plus: Release 11.2.0.4.0 Production on Tue Nov 18 09:06:33 2014

Copyright (c) 1982, 2013, Oracle. All rights reserved.

SQL> conn /as sysdba Connected to an idle instance. SQL> startup nomount ORACLE instance started.

Total System Global Area 342425600 bytes Fixed Size

2253024 bytes

Variable Size

268439328 bytes

Database Buffers Redo Buffers

67108864 bytes 4624384 bytes

Create the necessory directory for data file, Fast Recoovery area etc. *.audit_file_dest='/u01/app/oracle/admin/orcl/adump'

[oracle@klbstbkt2 dbs]$ mkdir -p /u01/app/oracle/admin/orcl/adump Oracle NET Configuration STEP 7. Configure Oracle Net Configure lisneters and service names on both the primary and standby so that they can communicate

with each other. The following listener.ora file on Primary Databse. ADR_BASE_LISTENER_ORCL = /u01/app/oracle LISTENER_ORCL = (DESCRIPTION_LIST = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.50.12)(PORT = 1521)) ) ) SID_LIST_LISTENER_ORCL = (SID_LIST = (SID_DESC = (GLOBAL_DBNAME = orcl) (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1) (SID_NAME = orcl) ) )

The following listener.ora file on Standby Databse. ADR_BASE_LISTENER_ORCL = /u01/app/oracle LISTENER_ORCL = (DESCRIPTION_LIST = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.50.22)(PORT = 1521)) ) ) SID_LIST_LISTENER_ORCL = (SID_LIST = (SID_DESC = (GLOBAL_DBNAME = orcl) (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1) (SID_NAME = orcl) ) )

Add or update the following entry to the

tnsnames.ora file on both machine.

orclstb = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.50.22)(PORT = 1521)) ) (CONNECT_DATA = (SERVICE_NAME = orcl) ) ) orcl = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.50.12)(PORT = 1521)) ) (CONNECT_DATA = (SERVICE_NAME = orcl) ) )

RMAN STEP 8. Use RMAN to create standby database run { allocate channel prmy1 type disk format '/u03/backup/rman/%U'; allocate channel prmy2 type disk format '/u03/backup/rman/%U'; allocate channel prmy3 type disk format '/u03/backup/rman/%U'; allocate channel prmy4 type disk format '/u03/backup/rman/%U'; allocate auxiliary channel stby type disk format '/u03/backup/rman/%U'; duplicate target database for standby from active database spfile set db_unique_name='orclstb' set service_names=’orcl’ set control_files='+DATA' set fal_client='orclstb' set fal_server='orcl' set log_archive_dest_2='service=orcl async valid_for=(online_logfile,primary_role) db_unique_name=orcl' dorecover nofilenamecheck; }

Configuring Data Guard in Heterogeneous

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