创建 物理备库
本文主要记录了创建物理备库的完整过程,以便实践中参考.耐于机器配置,此实验实现的是在本机上建立两个数据库TEST和STD_ASSG,TEST是主库，STD_ASSG
是备库，最后实现主库发生日志切换后，全部应用于物理备库
一 创建物理备库需要的目录
[oracle@dbsv admin]$ cd std_assg/
[oracle@dbsv std_assg]$ ls
[oracle@dbsv std_assg]$ mkdir arch
[oracle@dbsv std_assg]$ mkdir adump
[oracle@dbsv std_assg]$ mkdir bdump
[oracle@dbsv std_assg]$ mkdir cdump
[oracle@dbsv std_assg]$ mkdir udump
[oracle@dbsv std_assg]$ mkdir flash
[oracle@dbsv std_assg]$ cd $ORACLE_BASE/oradata
[oracle@dbsv oradata]$ mkdir STD_ASSG
二创建sys用户需要的密码文件
[oracle@dbsv dbs]$ ls orapw*
orapwdBAKDB.pwd orapwdorcl orapworcl orapwstdby orapwTEST
[oracle@dbsv dbs]$ cp orapwTEST orapwSTD_ASSG
三创建备库的日志文件
1 启动已有主库
[oracle@dbsv ~]$ export ORACLE_SID=TEST
[oracle@dbsv ~]$ sqlplus / as sysdba
2查看备库日志情况
SQL> SELECT GROUP#,THREAD#,SEQUENCE#,ARCHIVED,STATUS FROM V$STANDBY_LOG;
GROUP# THREAD# SEQUENCE# ARC STATUS
---------- ---------- ---------- --- ----------
4 0 0 YES UNASSIGNED
5 0 0 YES UNASSIGNED
6 0 0 YES UNASSIGNED
3 建立备库日志
SQL> ALTER DATABASE ADD STANDBY LOGFILE GROUP 7 '/u01/app/oracle/oradata/STD_ASSG/std.redo' SIZE 50M;
Database altered.
SQL> ALTER DATABASE ADD STANDBY LOGFILE GROUP 8 '/u01/app/oracle/oradata/STD_ASSG/std2.redo' SIZE 50M;
Database altered.
SQL> ALTER DATABASE ADD STANDBY LOGFILE GROUP 9 '/u01/app/oracle/oradata/STD_ASSG/std3.redo' SIZE 50M;
Database altered.
四修改初始化参数，配置物理备库需要的信息
vi initTEST.ora
# for primary role
DB_NAME=TEST
DB_UNIQUE_NAME=TEST
LOG_ARCHIVE_CONFIG='DG_CONFIG=(TEST,STD_ASSG)'
#CONTROL_FILES='/u01/app/oracle/oradata/TEST/control1.ctl', '/u01/app/oracle/oradata/TEST/control2.ctl', '/u01/app/oracle/oradata/TEST/control3.ctl'
LOG_ARCHIVE_DEST_1=
'LOCATION=/u01/app/oracle/admin/TEST/arch/
VALID_FOR=(ALL_LOGFILES,ALL_ROLES)
DB_UNIQUE_NAME=TEST'
LOG_ARCHIVE_DEST_2=
'SERVICE=STD_ASSG LGWR ASYNC
VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE)
DB_UNIQUE_NAME=STD_ASSG'
LOG_ARCHIVE_DEST_STATE_1=ENABLE
LOG_ARCHIVE_DEST_STATE_2=ENABLE
REMOTE_LOGIN_PASSWORDFILE=EXCLUSIVE
LOG_ARCHIVE_FORMAT=%t_%s_%r.arc
LOG_ARCHIVE_MAX_PROCESSES=30
# for standby role
FAL_SERVER=STD_ASSG
FAL_CLIENT=TEST
DB_FILE_NAME_CONVERT='/u01/app/oracle/oradata/STD_ASSG/','/u01/app/oracle/oradata/TEST/'
LOG_FILE_NAME_CONVERT=
'/u01/app/oracle/oradata/STD_ASSG/','/u01/app/oracle/oradata/TEST/'
STANDBY_FILE_MANAGEMENT=AUTO
复制并修改主库参数文件，改为备库可用参数文件
1,$ s/TEST/STD_ASSG/g
# for primary role
DB_NAME=TEST
DB_UNIQUE_NAME=STD_ASSG
LOG_ARCHIVE_CONFIG='DG_CONFIG=(STD_ASSG,TEST)'
#CONTROL_FILES='/u01/app/oracle/oradata/STD_ASSG/control1.ctl', '/u01/app/oracle/oradata/STD_ASSG/control2.ctl', '/u01/app/oracle/oradata/STD_ASSG/control3.ctl'
LOG_ARCHIVE_DEST_1=
'LOCATION=/u01/app/oracle/admin/STD_ASSG/arch/
VALID_FOR=(ALL_LOGFILES,ALL_ROLES)
DB_UNIQUE_NAME=STD_ASSG'
LOG_ARCHIVE_DEST_2=
'SERVICE=TEST LGWR ASYNC
VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE)
DB_UNIQUE_NAME=TEST'
LOG_ARCHIVE_DEST_STATE_1=ENABLE
LOG_ARCHIVE_DEST_STATE_2=ENABLE
REMOTE_LOGIN_PASSWORDFILE=EXCLUSIVE
LOG_ARCHIVE_FORMAT=%t_%s_%r.arc
LOG_ARCHIVE_MAX_PROCESSES=30
# for standby role
FAL_SERVER=TEST
FAL_CLIENT=STD_ASSG
DB_FILE_NAME_CONVERT='/u01/app/oracle/oradata/TEST/','/u01/app/oracle/oradata/STD_ASSG/'
LOG_FILE_NAME_CONVERT=
'/u01/app/oracle/oradata/TEST/','/u01/app/oracle/oradata/STD_ASSG/'
STANDBY_FILE_MANAGEMENT=AUTO
五 创建备库的控制文件
SQL> startup mount
ORACLE instance started.
Total System Global Area 452984832 bytes
Fixed Size 1262308 bytes
Variable Size 230690076 bytes
Database Buffers 213909504 bytes
Redo Buffers 7122944 bytes
Database mounted.
SQL> ALTER DATABASE CREATE STANDBY CONTROLFILE AS '/u01/app/oracle/oradata/STD_ASSG/STDASSG.ctl';
Database altered.
SQL> ALTER DATABASE CREATE STANDBY CONTROLFILE AS '/u01/app/oracle/oradata/STD_ASSG/STDASSG2.ctl';
Database altered.
SQL> ALTER DATABASE CREATE STANDBY CONTROLFILE AS '/u01/app/oracle/oradata/STD_ASSG/STDASSG3.ctl';
Database altered.
六 复制数据文件到备库相应目录
[oracle@dbsv TEST]$ cp *.dbf ../STD_ASSG/
七配置网络
STD_RSSG =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = tcp)(HOST = dbsv)(PORT = 1521))
)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = STD_ASSG)
)
)
八配置备库初始化参数文件
[oracle@dbsv admin]$ export ORACLE_SID=STD_ASSG
[oracle@dbsv admin]$ sqlplus / as sysdba
SQL*Plus: Release 10.2.0.3.0 - Production on Sun Apr 27 18:26:55 2014
Copyright (c) 1982, 2006, Oracle. All Rights Reserved.
Connected to an idle instance.
SQL> create spfile from pfile='initSTD_ASSG.ora'
2 ;
File created.
启动到控制文件状态
SQL> startup mount
ORACLE instance started.
Total System Global Area 452984832 bytes
Fixed Size 1262308 bytes
Variable Size 138415388 bytes
Database Buffers 306184192 bytes
Redo Buffers 7122944 bytes
Database mounted.
九 启动日志应用
SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE DISCONNECT FROM SESSION;
Database altered.
十测试物理备库是否可以使用
1 在主库上
SQL> SELECT SEQUENCE#, FIRST_TIME, NEXT_TIME
FROM V$ARCHIVED_LOG ORDER BY SEQUENCE#;
SEQUENCE# FIRST_TIME NEXT_TIME
---------- ------------------- -------------------
…
47 2014-04-27:18:52:51 2014-04-27:18:56:08
47 2014-04-27:18:52:51 2014-04-27:18:56:08
48 2014-04-27:18:56:08 2014-04-27:20:38:43
48 2014-04-27:18:56:08 2014-04-27:20:38:43
49 2014-04-27:20:38:43 2014-04-27:20:39:36
SEQUENCE# FIRST_TIME NEXT_TIME
---------- ------------------- -------------------
49 2014-04-27:20:38:43 2014-04-27:20:39:36
50 2014-04-27:20:39:36 2014-04-27:20:40:48
50 2014-04-27:20:39:36 2014-04-27:20:40:48
51 2014-04-27:20:40:48 2014-04-27:20:46:28
51 2014-04-27:20:40:48 2014-04-27:20:46:28
SQL> ALTER SYSTEM SWITCH LOGFILE;
System altered.
2 在备库上
SQL> SELECT SEQUENCE#,APPLIED FROM V$ARCHIVED_LOG
ORDER BY SEQUENCE#;
2
SEQUENCE# APP
---------- ---
44 YES
45 YES
46 YES
47 YES
48 YES
49 YES
50 YES
51 YES
8 rows selected.
证明备库日志在备库已被应用
