oracle 11gr2 dataguard （一）

准备：

1、修改主机名

primary    host：ora2.cc.com        ip:10.10.10.130

stdby        host：ora3.cc.com        ip:10.10.10.140

2、hosts文件互绑定

3、主库有完整的数据库，备库只有数据库软件(rdbms),不要建库

ora2.cc.com:--> rdbms instance+database
                              orcl     orcl

ora3.cc.com:-->rdbms  instance+database
                             orcl2     orcl

oranet  (需提前在root下执行：xhost +    调取图形界面）
netmgr(create-->listener.ora
                -->tnsnames.ora )

----------primary
$vim  /u01/app/oracle/product/11.2.0/db_1/network/admin/tnsnames.ora

TO_130=
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = ora2.cc.com)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = orcl)
    )
  )


to_140 =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = ora3.cc.com)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = orcl)
    )
  )

$ vim  /u01/app/oracle/product/11.2.0/db_1/network/admin/listener.ora

SID_LIST_LISTENER =                                                                       --------此段配置的为静态监听
  (SID_LIST =
    (SID_DESC =
      (GLOBAL_DBNAME = orcl)
      (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1)
      (SID_NAME = orcl)
    )
  )

LISTENER =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = ora2.cc.com)(PORT = 1521))
  )

copy 一份listener,准备给备库使用，注意修改hostname,sid

cp  -v  /u01/app/oracle/product/11.2.0/db_1/network/admin/listener.ora  /u01/app/oracle/product/11.2.0/db_1/network/admin/listener.ora.140

copy 一份passwd,准备给备库使用,注意修改文件名

cp  -v /u01/app/oracle/product/11.2.0/db_1/dbs/orapworcl /u01/app/oracle/product/11.2.0/db_1/dbs/orapworcl2.140

$sqlplus  /  as sysdba

SQL> show parameter name     -------检查name

NAME                                 TYPE        VALUE
------------------------------------ -----------
db_file_name_convert                 string
db_name                              string      orcl
db_unique_name                       string      orcl
global_names                         boolean     FALSE
instance_name                        string      orcl
lock_name_space                      string
log_file_name_convert                string
service_names                        string      orcl

SQL> select name from v$datafile;     -----------检查文件

NAME
------------------------------------------------------------------------------------------------------------------------
/u01/app/oracle/oradata/orcl/system01.dbf
/u01/app/oracle/oradata/orcl/sysaux01.dbf
/u01/app/oracle/oradata/orcl/undotbs01.dbf
/u01/app/oracle/oradata/orcl/users01.dbf

SQL> select name from v$datafile;
SQL> select member from v$logfile;
SQL> select name from v$controlfile;

SQL> alter database add SUPPLEMENTAL LOG data;
SQL> alter system set service_names=orcl  scope=spfile;
SQL> alter system set instance_name=orcl  scope=spfile;
SQL> alter system set db_unique_name=orcl  scope=spfile;
SQL> alter system set log_archive_config='dg_config=(orcl,orcl2)';
SQL> alter system set log_archive_dest_1='location=/u01/app/oracle/archivelog valid_for=(all_logfiles,all_roles) db_unique_name=orcl';

SQL> alter session  set log_archive_dest_state_2=defer;
SQL> alter system set log_archive_dest_2='service=to_140 valid_for=(online_logfile,primary_role) db_unique_name=orcl2 ';

SQL> select name from v$datafile;
SQL> select member from v$logfile;

SQL> alter system set db_file_name_convert='/u01/app/oracle/oradata/orcl/','/u01/app/oracle/oradata/orcl/'  scope=spfile;
SQL> alter system set log_file_name_convert='/u01/app/oracle/oradata/orcl/','/u01/app/oracle/oradata/orcl/'   scope=spfile;

SQL> create pfile='/home/oracle/p.ora' from spfile;

复制pfile文件给备机用

$ cp  -v p.ora  s.ora

修改s.ora

$ diff p.ora s.ora
1,9d0
< orcl.__db_cache_size=125829120
< orcl.__java_pool_size=4194304
< orcl.__large_pool_size=4194304
< orcl.__oracle_base='/u01/app/oracle'#ORACLE_BASE set from environment
< orcl.__pga_aggregate_target=167772160
< orcl.__sga_target=247463936
< orcl.__shared_io_pool_size=0
< orcl.__shared_pool_size=104857600
< orcl.__streams_pool_size=0
20c11
< *.db_unique_name='ORCL'
---
> *.db_unique_name='ORCL2'
22,23c13
< *.dispatchers='(PROTOCOL=TCP) (SERVICE=orclXDB)'
< *.instance_name='ORCL'
---
> *.instance_name='ORCL2'
25,26c15,16
< *.log_archive_dest_1='location=/u01/app/oracle/archivelog valid_for=(all_logfiles,all_roles) db_unique_name=orcl'
< *.log_archive_dest_2='service=to_140 valid_for=(online_logfile,primary_role) db_unique_name=orcl2 '
---
> *.log_archive_dest_1='location=/u01/app/oracle/archivelog valid_for=(all_logfiles,all_roles) db_unique_name=orcl2'
> *.log_archive_dest_2='service=to_130 valid_for=(online_logfile,primary_role) db_unique_name=orcl '

修改服务器分发

SQL> alter system set dispatchers='';

System altered.

SQL> alter system set shared_servers=0;

System altered.

复制文件到备机

$ scp s.ora [email protected]:/home/oracle

$ scp /u01/app/oracle/product/11.2.0/db_1/network/admin/tnsnames.ora    [email protected]:/u01/app/oracle/product/11.2.0/db_1/network/admin/tnsnames.ora

$ scp /u01/app/oracle/product/11.2.0/db_1/network/admin/listener.ora.244    [email protected]:/u01/app/oracle/product/11.2.0/db_1/network/admin/listener.ora

$ scp /u01/app/oracle/product/11.2.0/db_1/dbs/orapworcl   [email protected]:/u01/app/oracle/product/11.2.0/db_1/dbs/orapworcl2

--------stdby

$ lsnrctl start
$ export ORACLE_SID=orcl2

$ cat s.ora
$ mkdir  -pv /u01/app/oracle/admin/orcl/adump
$ mkdir  -pv /u01/app/oracle/oradata/orcl/
$ mkdir  -pv /u01/app/oracle/flash_recovery_area/orcl/
$ ls /u01/app/oracle/oradata/orcl/
$ ls /u01/app/oracle/flash_recovery_area
$ mkdir  -pv /u01/app/oracle/archivelog

$ sqlplus  / as sysdba
SQL> create spfile from pfile='/home/oracle/s.ora';
SQL> startup nomount

$ rman target sys/oracle@to_130 auxiliary sys/oracle@to_140

RMAN> duplicate target database for standby from active database nofilenamecheck;

Finished Duplicate Db at 25-APR-13  ---------------------状态成功

SQL> select status from v$instance;

STATUS
------------
MOUNTED
更改数据库为只读模式
SQL> alter database open read only;

Database altered.

SQL> alter database recover managed standby database disconnect from session;      ------应用日志

Database altered.

SQL> select PROTECTION_MODE from v$database;

PROTECTION_MODE
--------------------
MAXIMUM PERFORMANCE                          ------------处于最大性能模式

                                                                                    其他2种模式为：最高可用------maximize availability  
                                                                                                             最大保护------maximize protection 

SQL> alter database  recover managed standby database cancel;       取消日志应用