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)
)
)
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：
show configuration [verbose];
show database [verbose] 'satest';
show database 'patest''StatusReport';
f.查看数据库的DG状态：
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;
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）