5.4 确认备库tnsnames.ora
确认tnsnames.ora配置正确(on all standby nodes)：
JYZHAO =
(
DESCRIPTION =
(
ADDRESS = (
PROTOCOL = TCP)(
HOST =
192.168.
1.51)(
PORT =
1521))
(
ADDRESS = (
PROTOCOL = TCP)(
HOST =
192.168.
1.53)(
PORT =
1521))
(
CONNECT_DATA =
(
SERVER = DEDICATED)
(
SERVICE_NAME = jyzhao)
)
)
JYZHAO1 =
(
DESCRIPTION =
(
ADDRESS = (
PROTOCOL = TCP)(
HOST =
192.168.
1.51)(
PORT =
1521))
(
CONNECT_DATA =
(
SERVER = DEDICATED)
(
SERVICE_NAME = jyzhao)
(
SID = jyzhao1)
)
)
JYZHAO2 =
(
DESCRIPTION =
(
ADDRESS = (
PROTOCOL = TCP)(
HOST =
192.168.
1.53)(
PORT =
1521))
(
CONNECT_DATA =
(
SERVER = DEDICATED)
(
SERVICE_NAME = jyzhao)
(
SID = jyzhao2)
)
)
LISTENER_JYZHAO1=(
DESCRIPTION =(
ADDRESS = (
PROTOCOL = TCP)(
HOST = jystdrac1-vip)(
PORT =
1521)))
LISTENER_JYZHAO2=(
DESCRIPTION =(
ADDRESS = (
PROTOCOL = TCP)(
HOST = jystdrac2-vip)(
PORT =
1521)))
MYNAS =
(
DESCRIPTION =
(
ADDRESS = (
PROTOCOL = TCP)(
HOST =
192.168.
1.62)(
PORT =
1521))
(
ADDRESS = (
PROTOCOL = TCP)(
HOST =
192.168.
1.64)(
PORT =
1521))
(
CONNECT_DATA =
(
SERVER = DEDICATED)
(
SERVICE_NAME = mynas)
)
)
MYNAS1 =
(
DESCRIPTION =
(
ADDRESS = (
PROTOCOL = TCP)(
HOST =
192.168.
1.62)(
PORT =
1521))
(
CONNECT_DATA =
(
SERVER = DEDICATED)
(
SERVICE_NAME = mynas)
(
SID = jyzhao1)
)
)
MYNAS2 =
(
DESCRIPTION =
(
ADDRESS = (
PROTOCOL = TCP)(
HOST =
192.168.
1.64)(
PORT =
1521))
(
CONNECT_DATA =
(
SERVER = DEDICATED)
(
SERVICE_NAME = mynas)
(
SID = jyzhao2)
)
)
特别要注意LISTENER_JYZHAO1和LISTENER_JYZHAO2的配置是否对应备份的信息。
5.5 启动MRP
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE DISCONNECT FROM SESSION;
5.6 创建spfile然后使用spfile启动数据库
创建spfile
create spfile=
'+data/mynas/parameterfile/spfileMYNAS.ora' from pfile=
'/opt/app/oracle/product/11.2.0/dbhome_1/dbs/pfile_for_standby.txt';
在备库两个节点修改init
On
jystdrac1:
[oracle
@jystdrac1 dbs]$ cat initjyzhao1.ora
spfile=
'+data/mynas/parameterfile/spfileMYNAS.ora'
On
jystdrac2:
[oracle
@jystdrac2 dbs]$ cat initjyzhao2.ora
spfile=
'+data/mynas/parameterfile/spfileMYNAS.ora'
重新启动到mount状态可以再次开启MRP进程。
6.检查同步状态
可以在备库根据下面的SQL查询相关的信息：
select *
from v$archive_gap;
select process, client_process,
sequence#,
status from v$managed_standby;
select sequence#, first_time, next_time, applied
from v$archived_log;
select archived_thread#, archived_seq#, applied_thread#, applied_seq#
from v$archive_dest_status;
select thread#,
max (
sequence#)
from v$log_history
group by thread#;
select thread#,
max (
sequence#)
from v$archived_log
where APPLIED=
'YES' group by thread#;
