oracle11G使用DGbroker创建dg

客官°小女子只卖身不卖艺 2022-05-31 02:47 202阅读 0赞

1.环境：

a.主机环境：centos6.5

b.软件环境：oracle 11.2.0.4

c.主机信息：

DG1：192.168.100.51（数据库sid：atest）

DG2：192.168.100.52

2.前提工作（主从都要设置）：

a.关闭防火墙：/etc/init.d/iptables stop

b.关闭selinux：setenforce 0

查看状态：getenforce（关闭状态：Permissive）

3.主库设置：

a.设置主库db\_unique\_name：

alter system set db_unique_name='patest' scope=spfile;

b.设置主库为强制记录日志：

alter database force logging;

检查状态(YEs为强制)：

select name,force_logging from v$database;

c.设置standy\_file\_management：

alter system set standby_file_management ='AUTO';

d.创建standbylog：

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alter database add standby logfile group  11 '/u01/app/oracle/oradata/ATEST/standbylog/standby11.log' size 50m;

alter database add standby logfile group  12 '/u01/app/oracle/oradata/ATEST/standbylog/standby12.log' size 50m;

alter database add standby logfile group  13 '/u01/app/oracle/oradata/ATEST/standbylog/standby13.log' size 50m;

alter database add standby logfile group  14 '/u01/app/oracle/oradata/ATEST/standbylog/standby14.log' size 50m;

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e.开启归档(简单不详述)：

alter system set log_archive_dest_1='location=/u01/app/oracle/oradata/ATEST/archivelog';
    alter database archivelog;

f.开启DGbroker：

alter system set DG_BROKER_START=TRUE;

g.传输pfile和密码文件：

create pfile from spfile;
     scp initatest.ora orapwatest 192.168.100.52:/u01/app/oracle/product/11.2.0/db1/dbs/

h.设置监听：atest,patest,patest\_DGMGRL

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SID_LIST_LISTENER =
      (SID_LIST =
        (SID_DESC =
          (GLOBAL_DBNAME = atest)
          (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db1)
          (SID_NAME = atest)
        )
        (SID_DESC =
          (GLOBAL_DBNAME = patest)
          (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db1)
          (SID_NAME = atest)
        )
        (SID_DESC =
          (GLOBAL_DBNAME = patest_DGMGRL)
          (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db1)
          (SID_NAME = atest)
        )
      )
    
    LISTENER =
      (DESCRIPTION_LIST =
        (DESCRIPTION =
          (ADDRESS = (PROTOCOL = TCP)(HOST = vijay01.database.com)(PORT = 1521))
        )
        (DESCRIPTION =
          (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
        )
      )
    
    ADR_BASE_LISTENER = /u01/app/oracle

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i.设置tnsnames.ora

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ATEST =
      (DESCRIPTION =
        (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.100.51)(PORT = 1521))
        (CONNECT_DATA =
          (SERVER = DEDICATED)
          (SERVICE_NAME = atest)
        )
      )
    
    
    PATEST =
      (DESCRIPTION =
        (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.100.51)(PORT = 1521))
        (CONNECT_DATA =
          (SERVER = DEDICATED)
          (SERVICE_NAME = atest)
        )
      )
    
    SATEST =
      (DESCRIPTION =
        (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.100.52)(PORT = 1521))
        (CONNECT_DATA =
          (SERVER = DEDICATED)
          (SERVICE_NAME = atest)
        )
      )

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4.备库设置：

a.设置监听：atest,satest,satest\_DGMGRL

![复制代码][copycode.gif]

SID_LIST_LISTENER =
      (SID_LIST =
        (SID_DESC =
          (GLOBAL_DBNAME = atest)
          (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db1)
          (SID_NAME = atest)
        )
        (SID_DESC =
          (GLOBAL_DBNAME = satest)
          (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db1)
          (SID_NAME = atest)
        )
        (SID_DESC =
          (GLOBAL_DBNAME = satest_DGMGRL)
          (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db1)
          (SID_NAME = atest)
        )
      )
    
    LISTENER =
      (DESCRIPTION_LIST =
        (DESCRIPTION =
          (ADDRESS = (PROTOCOL = TCP)(HOST = vijay02.database.com)(PORT = 1521))
        )
        (DESCRIPTION =
          (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
        )
      )
    
    ADR_BASE_LISTENER = /u01/app/oracle

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b.设置tnsnames.ora

![复制代码][copycode.gif]

ATEST =
      (DESCRIPTION =
        (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.100.52)(PORT = 1521))
        (CONNECT_DATA =
          (SERVER = DEDICATED)
          (SERVICE_NAME = atest)
        )
      )
    
    
    SATEST =
      (DESCRIPTION =
        (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.100.52)(PORT = 1521))
        (CONNECT_DATA =
          (SERVER = DEDICATED)
          (SERVICE_NAME = atest)
        )
      )
    
    PATEST =
      (DESCRIPTION =
        (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.100.51)(PORT = 1521))
        (CONNECT_DATA =
          (SERVER = DEDICATED)
          (SERVICE_NAME = atest)
        )
      )

![复制代码][copycode.gif]

5.备份主库：

a.rman target /

b.backup database;

6.在备库上克隆主库：

a.修改备库pfile上的db\_unique\_name=satest

b.启动数据库到nomount：

startup nomount

c.登陆rman：

rman target sys/123456@patest auxiliary sys/123456@satest

d.开始克隆：

duplicate target database for standby nofilenamecheck from active database;

7.设置DGbroker：

a.登陆dgmgrl：

dgmgrl sys/123456@patest

b.设置主库：

create configuration dgc as primary database is patest connect identifier is patest;

c.添加备库：

add database satest as connect identifier is satest maintained as physical;

d.启用配置文件:

enable configuration

e.查看DGbroker配置：

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show configuration [verbose];
    
    show database [verbose] 'satest'; 
    
    show database 'patest''StatusReport';

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f.查看数据库的DG状态：

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SELECT GROUP#,dbid,archived,status from v$standby_log;
    
    select dest_id,valid_type,valid_role,valid_now from v$archive_dest;
    
    select process,status,group#,thread#,sequence# from v$managed_standby order by process,group#,thread#,sequence#;
    
    select name,value,time_computed from v$dataguard_stats;
    
    select timestamp,facility,dest_id,message_num,error_code,message from v$dataguard_status order by timestamp;
    
    select recid,archived,applied from v$archived_log;

![复制代码][copycode.gif]

8.DG不同步检查步骤：

1.检查密码文件
    2.检查网络
    3.检查参数文件
    4.检查防火墙或selinux
    5.如以上均无问题，只能说明dg环境有问题，需要重新搭建dg（重新传输数据文件到主库，在重新同步）

[copycode.gif]: /images/20220531/77f6fbe97ae04cf89227053bb9e2ae0e.png