dbprimary: 192.168.1.57 主机名称db1
dbstandby: 192.168.1.58 主机名成db2
SID: jifenpay
二、配置tns, 使用netca配置，我开始手工改的，一直有错误，配置好的文件内容：
dbprimary的listener.ora (/u01/app/oracle/product/11.1.0/db_1/network/admin目录下):
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = jifenpay)
(ORACLE_HOME = /u01/app/oracle/product/11.1.0/db_1)
(GLOBAL_DBNAME = jifenpay)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = db1)(PORT = 1521))
)
)
dbstandby的listener.ora:
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = jifenpay)
(ORACLE_HOME = /u01/app/oracle/product/11.1.0/db_1)
(GLOBAL_DBNAME = jifenpay)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = db2)(PORT = 1521))
)
)
dbprimary和dbstandby上的tnsnames.ora是一样的
# Generated by Oracle configuration tools.
DBSTANDBY =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = db2)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = jifenpay)
)
)
DBPRIMARY =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = db1)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = jifenpay)
)
)
然后在两台机器上分别检查配置是否正确
oracle>lsnrctl stop
oracle>lsnrctl start
oracle>lsnrctl status
oracle>tnsping dbprimary
oracle>tnsping dbstandby
oracle>sqlplus sys/password@dbprimary as sysdba
oracle>sqlplus sys/password@dbstandby as sysdba
三、在dbprimary上操作
1. oracle>mkdir /u01/app/oracle/oradata/archive
2. cd /u01/app/oracle/product/11.1.0/db_1/dbs
oracle>orapwd file=orapwjifenpay password=jifenpay entries=4 产生密码文件，一定要拷贝到从库上，就算从库执行同样的命令也不行
3. oracle>sqlplus sys/password as sysdba
sql>create pfile from spfile; 在/u01/app/oracle/product/11.1.0/db_1/dbs下生成initjifenpay.ora
在initjifenpay.ora文件后面增加内容：
*.DB_UNIQUE_NAME='dbprimary'
*.LOG_ARCHIVE_CONFIG='DG_CONFIG=(dbprimary, dbstandby)'
*.LOG_ARCHIVE_DEST_1='LOCATION=/u01/app/oracle/oradata/archive/ VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=dbprimary'
*.LOG_ARCHIVE_DEST_2='SERVICE=dbstandby LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=dbstandby'
*.LOG_ARCHIVE_DEST_STATE_1='ENABLE'
*.LOG_ARCHIVE_DEST_STATE_2='ENABLE'
*.LOG_ARCHIVE_FORMAT='%t_%s_%r.arc'
*.LOG_ARCHIVE_MAX_PROCESSES=5
*.FAL_SERVER='dbstandby'
*.FAL_CLIENT='dbprimary'
*.STANDBY_FILE_MANAGEMENT='AUTO'
4. sql>create spfile from pfile;
sql>startup mount;
sql>alter database archivelog;
sql>alter database open;
sql>archive log list; 查看是否处于log模式,如果不是执行如下命令
sql>alter database force logging; 改变为logging模式
sql>alter database create standby controlfile as '/u01/app/oracle/oradata/standby01.ctl'; 创建dbstandby上的控制文件
sql>shutdown immediate;
5. 把/u01/app/oracle/oradata打包传到dbstandby服务器, 把 /u01/app/oracle/product/11.1.0/db_1/dbs/orapwjifenpay也传过去
四、在dbstandby服务器上操作
1. oracle>sqlplus sys/password as sysdba
sql>shutdown immediate;
2. oracle>cd /u01/app/oracle
oracle>rm -rf oradata
把刚才传过来的包解压
oracle>cd oradata
oracle>cp standby01.ctl standby02.ctl
oracle>cp standby01.ctl standby03.ctl
3. sql>create pfile from spfile
修改initjifenpay.ora
*.control_files='/u01/app/oracle/oradata/standby01.ctl','/u01/app/oracle/oradata/standby02.ctl','/u01/app/oracle/orada
增加
*.DB_UNIQUE_NAME='dbstandby'
*.LOG_ARCHIVE_CONFIG='DG_CONFIG=(dbprimary, dbstandby)'
*.LOG_ARCHIVE_DEST_1='LOCATION=/u01/app/oracle/oradata/archive/ VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=dbstandby'
*.LOG_ARCHIVE_DEST_2='SERVICE=dbprimary LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=dbprimary'
*.LOG_ARCHIVE_DEST_STATE_1='ENABLE'
*.LOG_ARCHIVE_DEST_STATE_2='ENABLE'
*.LOG_ARCHIVE_FORMAT='%t_%s_%r.arc'
*.LOG_ARCHIVE_MAX_PROCESSES=5
*.FAL_SERVER='dbprimary'
*.FAL_CLIENT='dbstandby'
*.STANDBY_FILE_MANAGEMENT='AUTO'
4. sql>create spfile from pfile;
sql>startup nomount;
sql>alter database mount standby database;
sql>alter database recover managed standby database disconnect from session; 启动到recover mange模式
五、在dbprimary上操作
sql>startup;
六、检查是否工作正常
1. 查看oradata/archive文件是否传过去了
2. 在dbprimary上插入一些数据
(dbprimary)sql>select max(sequence#) from v$archived_log; 查看当前sequence
(dbstandby)sql>select max(sequence#) from v$archived_log;
(dbprimary)sql>alter system switch logfile;
(dbprimary)sql>select max(sequence#) from v$archived_log; 查看当前sequence
(dbstandby)sql>select max(sequence#) from v$archived_log;
如果dbstandby的sequence跟着改变，说明已经好了
3. select dest_name,status,error from v$archive_dest; 察看相应的归档路径的状态是否valid，否则根据error信息进行处理
4. 可以查看alert日志文件
/u01/app/oracle/diag/rdbms/dbprimary/jifenpay/alert/log.xml
/u01/app/oracle/diag/rdbms/dbprimary/jifenpay/trace/alert_jifenpay.log
七、切换从库到read only
在dbstandby操作
sql>ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL;
sql>alter database open;
好像从oracle 11开始standby处于read only模式下也能同步，这个我试过是好用的，只要在primary上执行alter system switch logfile
八、switchover
1.主库上执行
sql>alter database commit to switchover to physical standby with session shutdown;
sql>shutdown immediate;
sql>startup no mount;
sql>recover managed standby database disconnect;
2.从库上执行
sql>alter database commit to switchover to primary;
sql>shutdown immediate;
sql>startup;
