oracle DG broken工具配置

1)broken配置

可以在主库/备库/额外一台上配置

修改监听：

vi $ORACLE_HOME/network/admin/listener.ora

主库（新增如下代码）：

SID_LIST_LISTENER =

  (SID_LIST =

    (SID_DESC =

      (GLOBAL_DBNAME= orcl)

      (ORACLE_HOME =/oracle/app/product/11.2.0/db_1)

    (SID_NAME =orcl)

  )

  (SID_DESC =

    (GLOBAL_DBNAME=orcl_DGMGRL)

      (ORACLE_HOME =/oracle/app/product/11.2.0/db_1)

      (SID_NAME =orcl)

  )

)

备库（新增）：

SID_LIST_LISTENER =

  (SID_LIST =

    (SID_DESC =

      (GLOBAL_DBNAME= orcl_std)

      (ORACLE_HOME =/oracle/app/product/11.2.0/db_1)

    (SID_NAME =orcl)

  )

  (SID_DESC =

    (GLOBAL_DBNAME=orcl_std_DGMGRL)

      (ORACLE_HOME =/oracle/app/product/11.2.0/db_1)

      (SID_NAME =orcl)

  )

)

重启监听

lsnrctl reload

用tnsping进行检验是否配置正确。

2）参数设置(主备都要)

SQL> show parameter dg_broker_start

NAME                                 TYPE        VALUE

------------------------------------ ----------- ------------------------------

dg_broker_start                      boolean     FALSE

SQL> alter system set dg_broker_start =true scope=both;

3）配置DG Broken

Oracle用户：

dgmgrl 执行命令

DGMGRL> connect sys/oracle

 注意，这里有个bug：无论用什么密码连进去都是可以的，但最后切换时会报错

DGMGRL> help create

DGMGRL> create configuration dg as primary database is orcl connect identifier is orcl;

orcl为连接字符串 

 

DGMGRL> help add

DGMGRL> add database orcl_std as  connect identifier is orcl_std;

orcl_std为连接字符串 

 

查看配置文件：

show configuration

启用配置文件：

enable configuration

停用配置：

disable configuration

显示数据库：

show database verbose orcl;

显示数据库状态报告：

show database orcl statusreport;

---------------------------------------------------------------------

STATUS REPORT

       INSTANCE_NAME   SEVERITY ERROR_TEXT

                 yzw    WARNING ORA-16714: the value of property ArchiveLagTarget is inconsistent with the database setting

                 yzw    WARNING ORA-16714: the value of property LogArchiveMaxProcesses is inconsistent with the database setting

                 yzw    WARNING ORA-16714: the value of property LogArchiveMinSucceedDest is inconsistent with the database setting

-------------------------------------------------------------------------

解决方法：重新定义以上参数

DGMGRL> edit database dbsty set property ArchiveLagTarget=0;

DGMGRL> edit database orcl set property LogFileNameConvert='/oracle/app/oradata/orcl/,/oracle/app/oradata/orcl/';

DGMGRL> edit database orcl_std set property LogFileNameConvert='/oracle/app/oradata/orcl/,/oracle/app/oradata/orcl/';

注意：LogFileNameConvert、LogFileNameConvert这两个参数dgmgrl读不到，需要重新配置一下

从主库连到备库的方法：

Sqlplus   sys/oracle@orcl as sysdba

Ssqlplus  sys/密码@tns中的名称  as sydba

检测是否开启DG Broken：

ps -ef | grep dmon

前提：

1.很重要，搭建dg broker 之前一定一定要使备库日志应用与主库一致；

2.DG broken 需要创建备库日志组  日志大小相同 推荐备库组数=主库组数+1

日志组数会自动增加

alter database add standby logfile ('/oracle/app/oradata/yzw/stdb_redo01.log') size 200m;