【备份恢复】如何用RMAN Duplicate 异机复制 Oracle 数据库
源端和目标端的数据库版本需要保持一致,补丁版本可以不一致,目标端磁盘空间不能小于源端空间,目标端只需要安装 Oracle 软件即可!
1、主机名解析
源端和目标端同时配置主机名解析,在 /etc/hosts 文件中添加两个主机的信息:
cat <<EOF >> /etc/hosts
192.168.100.3 oracle
192.168.100.1 oracledp
EOF
2、目标端配置静态监听
由于目标端没有创建实例,所以需要配置一个静态监听:
可以通过netmgr配置,也可以通过以下命令配置
cat<<EOF >>$ORACLE_HOME/network/admin/listener.ora
SID_LIST_ORACLEDP =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = fsdb)
(ORACLE_HOME = /u01/app/oracle/product/11.2/db_1)
(SID_NAME = fsdb)
)
)
ORACLEDP =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = oracledp)(PORT = 1521))
)
EOF
配置好之后,重启监听:
lsnrctl stop
lsnrctl start
lsnrctl status
3、TNS
使用 RMAN Duplicate 需要使用 TNSNAME 来连接,所以建议配置 TNS,源端和目标度同时添加:
## oracle 用户下执行
cat<<EOF>>$ORACLE_HOME/network/admin/tnsnames.ora
oracle =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = oracle)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = fsdb)
)
)
oracledp =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = oracledp)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = fsdb)
)
)
EOF
配置完成后,分别在源端和目标端执行 tnsping 测试连通性:
tnsping oracle
tnsping oracledp
4、源端生成 pfile 参数文件:
create pfile=’/home/oracle/pfile.ora’ from spfile;
查看并编辑生成的参数文件:
fsdb.__db_cache_size=272629760
fsdb.__java_pool_size=4194304
fsdb.__large_pool_size=4194304
fsdb.__oracle_base=’/u01/app/oracle’#ORACLE_BASE set from environment
fsdb.__pga_aggregate_target=335544320
fsdb.__sga_target=499122176
fsdb.__shared_io_pool_size=0
fsdb.__shared_pool_size=209715200
fsdb.__streams_pool_size=0
*.audit_file_dest=’/u01/app/oracle/admin/czydb/adump’
*.audit_trail=’db’
*.compatible=’11.2.0.4.0′
*.control_files=’/oradata/czydb/control01.ctl’,’/oradata/czydb/control02.ctl’
*.db_block_size=8192
*.db_domain=”
*.db_name=’fsdb’
*.diagnostic_dest=’/u01/app/oracle’
*.log_archive_dest_1=’location=/home/oracle/czydb_arch’
*.memory_target=833617920
*.open_cursors=300
*.processes=150
*.remote_login_passwordfile=’EXCLUSIVE’
*.undo_tablespace=’UNDOTBS1′
去掉不必要的参数,调整内存参数以及文件位置。