Oracle10gR2 Dataguard: 建立一个ASM实例存储的物理备库
主库: 文件系统存储数据库文件
备库: ASM实例存储数据库文件
建备库方式: duplicate target database for standby;
1 准备工作
1.1 备库Oracle软件安装
参照<<Oracle Database 10gR2 for Linux 安装和维护指南.doc>>, 如果主库是10.2.0.1, 那么备库也安装该版本即可, 无需建库.
.
1.2 主库Enable force logging
$ sqlplus / as sysdba
SQL> select FORCE_LOGGING from v$database;
FOR
---
NO
SQL> alter database force logging;
SQL> exit;
.
1.3 备份主库(ASM实例)
1) 全库备份外加备用控制文件
$ rman target /
RMAN> backup as compressed backupset full database include current controlfile for standby format '/u01/backup/bak_full/dbfull_%T_%s_%p.bak' plus archivelog format '/u01/backup/bak_full/archfull_%T_%s_%p.bak';
RMAN> exit;
2) 把备份文件拷贝到备库主机
$ scp /u01/backup/bak_full/dbfull* euis2:/u01/backup/bak_full/
$ scp /u01/backup/bak_full/archfull* euis2:/u01/backup/bak_full/
1 建物理备库(ASM实例)
1.1 备库准备参数文件
注意路径信息.
$ vi $ORACLE_HOME/dbs/init$ORACLE_SID.ora
#以下为建库必需参数
db_name = EUIS
db_unique_name = EUISASM
db_block_size = 8192
job_queue_processes = 10
sga_max_size = 1G
sga_target = 512M
undo_management = AUTO
undo_tablespace = UNDOTBS1
#以下为一般建库需设置的参数
audit_file_dest = /u01/app/oracle/admin/EUISASM/adump
background_dump_dest = /u01/app/oracle/admin/EUISASM/bdump
core_dump_dest = /u01/app/oracle/admin/EUISASM/cdump
user_dump_dest = /u01/app/oracle/admin/EUISASM/udump
#以下为推荐的参数设置
db_domain = LK
open_cursors = 3000
processes = 500
undo_retention = 86400
db_recovery_file_dest = +DG1
db_recovery_file_dest_size = 2G
#归档主备目录推荐设置
log_archive_dest_1 = 'LOCATION=+DG1/'
log_archive_dest_state_1='ENABLE'
log_archive_format = '%t_%s_%r.arc'
#以下为附加的参数设置
utl_file_dir = '/u01/app/oracle'
#以下为OMF参数设置
db_create_file_dest=+DG1
#以下是作为备库需增加的参数
*.fal_client='db_euisasm'
*.fal_server='db_euis'
*.standby_file_management='AUTO'
#如果要做主备切换需增加的参数设置
compatible='10.2.0'
*.remote_login_passwordfile='EXCLUSIVE'
*.log_archive_config='DG_CONFIG=(EUIS,EUISASM)'
参数说明:
db_name='和主库一样';
fal_client/server='tnsnames.ora中配置的网络服务名, 即网络连接串';
standby_file_management='AUTO' 自动同步主库上新建的数据文件到备库, 但主库增删logfile或rename datafile会有限制;
compatible='10.2.0' 备库该参数需大于或等于主库该参数, 最好和主库一样, 如果要做切换, 那主备库的该参数必需一样.
.
1.2 备库建立密码文件
格式一定是要用orapw<SID>, 密码和主库一样.
$ $ORACLE_HOME/bin/orapwd file=$ORACLE_HOME/dbs/orapw$ORACLE_SID password='iamENCY000' force=y
.
1.3 备库建立需要的目录
--存放trace文件
$ mkdir -p $ORACLE_BASE/admin/$ORACLE_SID/adump
mkdir -p $ORACLE_BASE/admin/$ORACLE_SID/bdump
mkdir -p $ORACLE_BASE/admin/$ORACLE_SID/cdump
mkdir -p $ORACLE_BASE/admin/$ORACLE_SID/udump
.
1.4 主备库建立网络服务名
主库主机和备库主机都建立.
$ vi $ORACLE_HOME/network/admin/tnsnames.ora
db_EUISASM =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = euis2)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = EUISASM.LK)
)
)
db_euis =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = euis1)(PORT = 1521))
)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = EUIS.LK)
)
)
.
1.5 备库建立监听并测试
备库主机(注意加入ASM实例监听):
$ vi $ORACLE_HOME/network/admin/listener.ora
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = EUISASM)
(ORACLE_HOME = /u01/app/oracle/product/10.2.0/db_1)
(GLOBAL_DBNAME = EUISASM.LK)
)
(SID_DESC =
(SID_NAME = +ASM)
(ORACLE_HOME = /u01/app/oracle/product/10.2.0/db_1)
(GLOBAL_DBNAME = +ASM)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = euis2)(PORT = 1521))
)
)
$ vi $ORACLE_HOME/network/admin/sqlnet.ora
NAMES.DIRECTORY_PATH= (TNSNAMES)
$ lsnrctl start
$ tnsping db_euis
$ tnsping db_euisstd
主库主机:
$ tnsping db_euisstd
$ tnsping db_euis
.
--End--
