Environment

  • primary 192.168.1.100 CentOS 6.0 64bit Oracle 11gR2 primary database
  • standby 192.168.2.100 Redhat 5.5 64bit Oracle 10g standby database

Primary Database

force logging

[[email protected] conf]# su - oracle
[[email protected] ~]$ sqlplus  /nolog

SQL*Plus: Release 11.2.0.1.0 Production on Sun Sep 8 14:56:17 2013

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

SQL> conn /as sysdba
Connected.
SQL> select force_logging from v$database;

FOR
---
NO

SQL> alter database force logging;

Database altered.

enable archivelog

SQL> archive log list;
Database log mode	       No Archive Mode
Automatic archival	       Disabled
Archive destination	       USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence     634
Current log sequence	       636
SQL> shutdown immediate; 
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount; 
ORACLE instance started.

Total System Global Area 3290345472 bytes
Fixed Size		    2217832 bytes
Variable Size		 2365589656 bytes
Database Buffers	  905969664 bytes
Redo Buffers		   16568320 bytes
Database mounted.
SQL> alter database archivelog;

Database altered.

SQL> alter database open;

Database altered.

SQL> archive log list;
Database log mode	       Archive Mode
Automatic archival	       Enabled
Archive destination	       USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence     634
Next log sequence to archive   636
Current log sequence	       636
SQL> show parameter log_archive

NAME				     TYPE	 VALUE
------------------------------------ ----------- ------------------------------
log_archive_config		     string
log_archive_dest		     string	 /db/oracle/arch/
log_archive_dest_1		     string
log_archive_dest_10		     string
log_archive_dest_11		     string
log_archive_dest_12		     string
log_archive_dest_13		     string
log_archive_dest_14		     string
log_archive_dest_15		     string
log_archive_dest_16		     string
log_archive_dest_17		     string

NAME				     TYPE	 VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_18		     string
log_archive_dest_19		     string
log_archive_dest_2		     string
log_archive_dest_20		     string
log_archive_dest_21		     string
log_archive_dest_22		     string
log_archive_dest_23		     string
log_archive_dest_24		     string
log_archive_dest_25		     string
log_archive_dest_26		     string
log_archive_dest_27		     string

NAME				     TYPE	 VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_28		     string
log_archive_dest_29		     string
log_archive_dest_3		     string
log_archive_dest_30		     string
log_archive_dest_31		     string
log_archive_dest_4		     string
log_archive_dest_5		     string
log_archive_dest_6		     string
log_archive_dest_7		     string
log_archive_dest_8		     string
log_archive_dest_9		     string

NAME				     TYPE	 VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_state_1	     string	 enable
log_archive_dest_state_10	     string	 enable
log_archive_dest_state_11	     string	 enable
log_archive_dest_state_12	     string	 enable
log_archive_dest_state_13	     string	 enable
log_archive_dest_state_14	     string	 enable
log_archive_dest_state_15	     string	 enable
log_archive_dest_state_16	     string	 enable
log_archive_dest_state_17	     string	 enable
log_archive_dest_state_18	     string	 enable
log_archive_dest_state_19	     string	 enable

NAME				     TYPE	 VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_state_2	     string	 enable
log_archive_dest_state_20	     string	 enable
log_archive_dest_state_21	     string	 enable
log_archive_dest_state_22	     string	 enable
log_archive_dest_state_23	     string	 enable
log_archive_dest_state_24	     string	 enable
log_archive_dest_state_25	     string	 enable
log_archive_dest_state_26	     string	 enable
log_archive_dest_state_27	     string	 enable
log_archive_dest_state_28	     string	 enable
log_archive_dest_state_29	     string	 enable

NAME				     TYPE	 VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_state_3	     string	 enable
log_archive_dest_state_30	     string	 enable
log_archive_dest_state_31	     string	 enable
log_archive_dest_state_4	     string	 enable
log_archive_dest_state_5	     string	 enable
log_archive_dest_state_6	     string	 enable
log_archive_dest_state_7	     string	 enable
log_archive_dest_state_8	     string	 enable
log_archive_dest_state_9	     string	 enable
log_archive_duplex_dest 	     string
log_archive_format		     string	 %t_%s_%r.dbf

NAME				     TYPE	 VALUE
------------------------------------ ----------- ------------------------------
log_archive_local_first 	     boolean	 TRUE
log_archive_max_processes	     integer	 4
log_archive_min_succeed_dest	     integer	 1
log_archive_start		     boolean	 FALSE
log_archive_trace		     integer	 0

add standby logfile group

SQL> select group#,sequence#,members,archived,status from v$log;

    GROUP#  SEQUENCE#	 MEMBERS ARC STATUS
---------- ---------- ---------- --- ----------------
     1	  634	       1 YES INACTIVE
     2	  635	       1 YES INACTIVE
     3	  636	       1 NO  CURRENT

SQL> alter database add standby logfile group 4 ('/db/oracle/oradata/test/log4a.log','/db/oracle/oradata/test/log4b.log')size 50M;

Database altered.

SQL> alter database add standby logfile group 5 ('/db/oracle/oradata/test/log5a.log','/db/oracle/oradata/test/log5b.log')size 50M;

Database altered.

SQL> alter database add standby logfile group 6 ('/db/oracle/oradata/test/log6a.log','/db/oracle/oradata/test/log6b.log')size 50M;

Database altered.

SQL> alter database add standby logfile group 7 ('/db/oracle/oradata/test/log7a.log','/db/oracle/oradata/test/log7b.log')size 50M;

Database altered.

SQL> select group#,thread#,sequence#,archived,status from v$standby_log;

    GROUP#    THREAD#  SEQUENCE# ARC STATUS
---------- ---------- ---------- --- ----------
     4	    0	       0 YES UNASSIGNED
     5	    0	       0 YES UNASSIGNED
     6	    0	       0 YES UNASSIGNED
     7	    0	       0 YES UNASSIGNED

add dataguard configuration in pfile

SQL> create pfile from spfile;

File created.

SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> 
  
[[email protected] primary]$ cd /db/oracle/product/11.2.0/db_1/dbs/
[[email protected] dbs]$ ls -al
total 9840
drwxr-xr-x.  2 oracle oinstall     4096 Sep  8 15:01 .
drwxr-xr-x. 74 oracle oinstall     4096 Jul 19 14:30 ..
-rw-rw----.  1 oracle oinstall     1544 Sep  8 15:01 hc_primary.dat
-rw-r--r--.  1 oracle oinstall     2851 May 15  2009 init.ora
-rw-r--r--.  1 oracle oinstall      993 Sep  8 15:01 initprimary.ora
-rw-r-----.  1 oracle oinstall       24 Jul 19 14:27 lkprimary
-rw-r-----.  1 oracle oinstall     1536 Sep  8 14:25 orapwprimary
-rw-r-----.  1 oracle oinstall 10043392 Sep  8 13:20 snapcf_primary.f
-rw-r-----.  1 oracle oinstall     3584 Sep  8 14:57 spfileprimary.ora
[[email protected] dbs]$ cp initprimary.ora initprimary.ora.dist
[[email protected] dbs]$ vim initprimary.ora
... ...
#2013-9-8    dylanninin    settings for primary database
*.db_unique_name='primary'
*.log_archive_config='dg_config=(primary,standby)'
*.log_archive_dest_1='location=/db/oracle/arch valid_for=(all_logfiles,all_roles)'
*.log_archive_dest_2='service=standby arch async valid_for=(online_logfiles,primary_role) db_unique_name=standby'
*.log_archive_dest_state_1='enable'
*.log_archive_dest_state_2='enable'
*.standby_file_management='auto'
*.standby_archive_dest='/db/oracle/arch'
*.fal_client='primary'
*.fal_server='standby'

SQL> conn /as sysdba
Connected to an idle instance.
SQL> startup pfile=?/dbs/initprimary.ora
ORACLE instance started.

Total System Global Area 3290345472 bytes
Fixed Size		    2217832 bytes
Variable Size		 2365589656 bytes
Database Buffers	  905969664 bytes
Redo Buffers		   16568320 bytes
Database mounted.
Database opened.
SQL> create spfile from pfile; 

File created.

SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup
ORA-32004: obsolete or deprecated parameter(s) specified for RDBMS instance
ORACLE instance started.

Total System Global Area 3290345472 bytes
Fixed Size		    2217832 bytes
Variable Size		 2365589656 bytes
Database Buffers	  905969664 bytes
Redo Buffers		   16568320 bytes
Database mounted.
Database opened.
SQL> show parameter spfile

NAME				     TYPE	 VALUE
------------------------------------ ----------- ------------------------------
spfile				     string	 /db/oracle/product/11.2.0/db_1
                         /dbs/spfileprimary.ora

create standby controlfile

SQL> alter database create standby controlfile as '/db/oracle/standby.ctl';

Database altered.

shutdown database

SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.

edit listener.ora and tnsnames.ora

[[email protected] admin]$ pwd
/db/oracle/product/11.2.0/db_1/network/admin

[[email protected] admin]$ cat listener.ora 
# listener.ora Network Configuration File: /db/oracle/product/11.2.0/db_1/network/admin/listener.ora
# Generated by Oracle configuration tools.

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = primary.egolife.com)(PORT = 1521))
    )
  )

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = /db/oracle/product/11.2.0/db_1)
      (PROGRAM = extproc)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = primary)
      (ORACLE_HOME = /db/oracle/product/11.2.0/db_1)
      (SID_NAME = primary)
    )
  )

ADR_BASE_LISTENER = /db/oracle


[[email protected] admin]$ cat tnsnames.ora
# tnsnames.ora Network Configuration File: /db/oracle/product/11.2.0/db_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.

primary =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST =192.168.1.100)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = primary)
    )
  )

standby =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.2.100)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = primary)
    )
  )

Copy files to Standby Database

scp datafile,pfile/spfile/orapwd,tnsnames,listener to standby database

Standby Database

edut dataguard configuration in pfile

[[email protected] ~]$ cd /db/oracle/product/11.2.0/db_1/dbs/
[[email protected] dbs]$ vim initprimary.ora
... ...
*.control_files='/db/oracle/oradata/test/standby.ctl'
... ...
#2013-9-8    dylanninin    settings for primary database
*.db_unique_name='standby'
*.log_archive_config='dg_config=(primary,standby)'
*.log_archive_dest_1='location=/db/oracle/arch valid_for=(all_logfiles,all_roles) db_unique_name=standby'
*.log_archive_dest_2='service=primary db_unique_name=primary'
*.log_archive_dest_state_1='enable'
*.log_archive_dest_state_2='enable'
*.standby_file_management='auto'
*.standby_archive_dest='/db/oracle/arch'
*.fal_client='standby'
*.fal_server='primary'

mount standby database and start listener

[[email protected] ~]$ sqlplus  /nolog

SQL*Plus: Release 11.2.0.1.0 Production on Sun Sep 8 17:28:26 2013

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

SQL> conn /as sysdba
Connected to an idle instance.
SQL> startup nomount pfile=?/dbs/initprimary.ora
ORA-32006: STANDBY_ARCHIVE_DEST initialization parameter has been deprecated
ORACLE instance started.

Total System Global Area 1653518336 bytes
Fixed Size		    2213896 bytes
Variable Size		  939526136 bytes
Database Buffers	  704643072 bytes
Redo Buffers		    7135232 bytes

SQL> alter database mount standby database;

Database altered.

[[email protected] ~]$ lsnrctl start

start primary database and listener

test archivelog sync and apply

primary database

SQL> archive log list;
Database log mode	       Archive Mode
Automatic archival	       Enabled
Archive destination	       /db/oracle/arch
Oldest online log sequence     638
Next log sequence to archive   640
Current log sequence	       640
SQL> alter system switch logfile;

System altered.

SQL> alter system switch logfile;

System altered.

SQL> archive log list;
Database log mode	       Archive Mode
Automatic archival	       Enabled
Archive destination	       /db/oracle/arch
Oldest online log sequence     640
Next log sequence to archive   642
Current log sequence	       642

standby database

SQL> conn /as sysdba
Connected.
SQL> archive log list;
Database log mode	       Archive Mode
Automatic archival	       Enabled
Archive destination	       /db/oracle/arch
Oldest online log sequence     640
Next log sequence to archive   0
Current log sequence	       642

common operations

switch logfile to archive log

SQL> alter system switch logfile;

views to check logfile,archivelog in primary/standby database

select max(sequence#) from v$archived_log; 
select max(sequence#) from v$log_history; 
select group#,sequence#,archived,status from v$log; 
select name,sequence#,applied from v$archived_log; 

switch between primary/standby database

sync failure

1)check whether archivelogs are missing; if then to copy and register missing archivelogs manually.

--register archivelog
alter database register logfile '/path/to/the/missing/archivelog';

2)apply archivelog in standby database:

--cancel applying archivelog
alter database recover managed standby database cancel; 

--apply archivelog
alter database recover managed standby database disconnect from session; 

Reference



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Published

08 September 2013

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