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oel 7.9搭建oracle 11.2.0.4物理备库

时间：2022-12-13 19:31:09浏览次数：63  
标签：meddocdgbak datafile 备库 app 0.4 11.2 oradata oracle u01 

文档课题：oel 7.9搭建oracle 11.2.0.4物理备库.
实验目标：主库已存在一个备库，搭建第二个备库.
创建时间：2021/12/01
1、规划

oel 7.9搭建oracle 11.2.0.4物理备库_物理备库

2、磁盘处理
2.1、划分磁盘空间
#fdisk /dev/sdb
为meddocbak备库划分20g.
[root@bigdata ~]# partprobe
[root@bigdata ~]# lsblk -p
NAME                                MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
/dev/sdb                              8:16   0  100G  0 disk 
├─/dev/sdb2                           8:18   0   30G  0 part 
│ └─/dev/mapper/meddocdg-meddocdg   252:2    0   30G  0 lvm  /meddocdg
├─/dev/sdb3                           8:19   0   20G  0 part 
└─/dev/sdb1                           8:17   0   50G  0 part 
  └─/dev/mapper/hisorcldg-hisorcldg 252:3    0   50G  0 lvm  /hisorcldg
/dev/sr0                             11:0    1  4.5G  0 rom  
/dev/sda                              8:0    0  100G  0 disk 
├─/dev/sda2                           8:2    0   98G  0 part 
│ ├─/dev/mapper/ol-swap             252:1    0   16G  0 lvm  [SWAP]
│ └─/dev/mapper/ol-root             252:0    0   82G  0 lvm  /
└─/dev/sda1                           8:1    0    2G  0 part /boot
# pvcreate /dev/sdb3  #创建pv
# vgcreate -s 4M meddocdgbak /dev/sdb3  #创建vg meddocdgbak
# lvcreate -l 100%vg -n meddocdgbak meddocdgbak  #创建lv meddocdgbak
# mkfs.xfs /dev/meddocdgbak/meddocdgbak

2.2、挂载
创建挂载点：
# mkdir /meddocdgbak
# chown -R oracle:oinstall /meddocdgbak
# blkid |grep meddocdgbak
/dev/mapper/meddocdgbak-meddocdgbak: UUID="7cd288a4-84b9-4d2a-b5bb-7d89815cfd54" TYPE="xfs"

# vim /etc/fstab
添加以下:
UUID="7cd288a4-84b9-4d2a-b5bb-7d89815cfd54"   /meddocdgbak   xfs   defaults  0 0

# mount -a

3、主库操作
3.1、归档情况
> archive log list;
> select force_logging from v$database;
3.2、查看STANDBY日志文件
SQL> select thread#,group#,members,bytes/1024/1024 as M from v$log;

   THREAD#     GROUP#    MEMBERS          M
---------- ---------- ---------- ----------
         1          1          1         50
         1          2          1         50
         1          3          1         50

SQL> select group#,bytes/1024/1024 as M from v$standby_log;

    GROUP#          M
---------- ----------
        11         50
        12         50
        13         50
        14         50

Database altered.
3.3、修改参数文件
#设置log_archive_config
> alter system set log_archive_config='dg_config=(orcl150,orcl151,meddocdgbak)';
#设置备库归档目的地
> alter system set log_archive_dest_3='service=meddocdgbak lgwr async VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=meddocdgbak';

3.4、拷贝参数文件
用spfile文件创建pfile 文件：
> create pfile='/home/oracle/pfilemeddocdgbak.ora' from spfile;
$ ll
total 4
drwxr-xr-x 2 oracle oinstall    6 Nov  6 23:46 Desktop
drwxr-xr-x 2 oracle oinstall    6 Nov  6 23:46 Documents
drwxr-xr-x 2 oracle oinstall    6 Nov  6 23:46 Downloads
drwxr-xr-x 2 oracle oinstall    6 Nov  6 23:46 Music
-rw-r--r-- 1 oracle oinstall 2129 Dec  1 10:19 pfilemeddocdgbak.ora
drwxr-xr-x 2 oracle oinstall    6 Nov  6 23:46 Pictures
drwxr-xr-x 2 oracle oinstall    6 Nov  6 23:46 Public
drwxr-xr-x 2 oracle oinstall    6 Nov  6 23:46 Templates
drwxr-xr-x 2 oracle oinstall    6 Nov  6 23:46 Videos

$ scp pfilemeddocdgbak.ora [email protected]:/u01/app/oracle/product/11.2.0/db_1/dbs
3.5、拷贝密码文件
$ scp orapworcl150 [email protected]:/u01/app/oracle/product/11.2.0/db_1/dbs
3.6、修改TNS 配置文件
$ vim tnsnames.ora
$ cat tnsnames.ora 
# tnsnames.ora Network Configuration File: /u01/app/oracle/product/11.2.0/db_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.

ORCL150 =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.133.150)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl150)
    )
  )

ORCL151 =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.133.151)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl151)
    )
  )

MEDDOCDGBAK =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.133.226)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = meddocdgbak)
    )
  )

#蓝色为修改部分
3.7、重启监听服务
$ lsnrctl stop
$ lsnrctl start

4、备库操作
4.1、添加实例名
$ vi /etc/oratab
添加以下：
meddocdgbak:/u01/app/oracle/product/11.2.0/db_1:N

$ export ORACLE_SID=meddocdgbak

4.2、重命名文件
[oracle@bigdata dbs]$ ll
total 60
-rw-rw---- 1 oracle oinstall 1544 Dec  1 00:15 hc_hisorcldg.dat
-rw-rw---- 1 oracle oinstall 1544 Dec  1 09:20 hc_meddocdg.dat
-rw-r--r-- 1 oracle oinstall 1744 Nov 29 22:16 inithisorcldg.ora
-rw-r--r-- 1 oracle oinstall 1675 Nov 30 14:42 initmeddocdg.ora
-rw-r--r-- 1 oracle oinstall 2851 May 15  2009 init.ora
-rw-r----- 1 oracle oinstall   24 Nov 30 00:15 lkHISORCLDG
-rw-r----- 1 oracle oinstall   24 Nov 30 15:16 lkMEDDOCDG
-rw-r----- 1 oracle oinstall 1536 Nov 30 00:15 orapwhisorcldg
-rw-r----- 1 oracle oinstall 1536 Nov 30 15:16 orapwmeddocdg
-rw-r----- 1 oracle oinstall 1536 Dec  1 10:26 orapworcl150
-rw-r--r-- 1 oracle oinstall 2129 Dec  1 10:24 pfilemeddocdgbak.ora
-rw-r----- 1 oracle oinstall 5632 Nov 30 23:37 spfilehisorcldg.ora
-rw-r----- 1 oracle oinstall 5632 Dec  1 09:11 spfilemeddocdg.ora

[oracle@bigdata dbs]$ mv orapworcl150 orapwmeddocdgbak

4.3、修改参数文件
[oracle@bigdata dbs]$ vi pfilemeddocdgbak.ora

*._allow_resetlogs_corruption=FALSE
*.audit_trail='db'
*.compatible='11.2.0.4.0'
*.db_block_size=8192
*.db_domain=''
*.db_name='orcl150'
*.db_recovery_file_dest_size=4385144832
*.db_recovery_file_dest='/u01/app/oracle/fast_recovery_area'
*.diagnostic_dest='/u01/app/oracle'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=orcl151XDB)'
*.log_archive_dest_state_1='enable'
*.log_archive_dest_state_2='enable'
*.memory_target=3217031168
*.open_cursors=300
*.processes=150
*.remote_login_passwordfile='EXCLUSIVE'
*.standby_file_management='AUTO'
*.undo_tablespace='UNDOTBS1'
*.log_archive_config='dg_config=(orcl150,meddocdgbak)'
*.control_files='/u01/app/oracle/oradata/meddocdgbak/control01.ctl','/u01/app/oracle/fast_recovery_area/meddocdgbak/control02.ctl'
*.audit_file_dest='/u01/app/oracle/admin/meddocdgbak/adump'
*.db_unique_name='meddocdgbak'
*.fal_client='meddocdgbak'
*.fal_server='orcl150'
*.log_archive_dest_1='location=/u01/app/oracle/oradata/meddocdgbak/archivelog valid_for=(all_logfiles,all_roles) db_unique_name=meddocdgbak'
*.log_archive_dest_2='service=orcl150 lgwr async valid_for=(online_logfiles,primary_role) db_unique_name=orcl150'
*.db_file_name_convert='/u01/app/oracle/oradata/orcl150/','/meddocdgbak/app/oracle/oradata/meddocdgbak/','/u01/oracle/','/meddocdgbak/oracle/'
*.log_file_name_convert='/u01/app/oracle/oradata/orcl150/','/meddocdgbak/app/oracle/oradata/meddocdgbak/','/u01/app/oracle/fast_recovery_area/orcl150/','/meddocdgbak/app/oracle/fast_recovery_area/meddocdgbak/'

#红色为修改内容
4.4、创建目录
[oracle@bigdata dbs]$ mkdir -p /u01/app/oracle/oradata/meddocdgbak/
[oracle@bigdata dbs]$ mkdir -p /u01/app/oracle/fast_recovery_area/meddocdgbak/
[oracle@bigdata dbs]$ mkdir -p /u01/app/oracle/admin/meddocdgbak/adump
[oracle@bigdata dbs]$ mkdir -p /u01/app/oracle/oradata/meddocdgbak/archivelog/
[oracle@bigdata dbs]$ mkdir -p /meddocdgbak/app/oracle/oradata/meddocdgbak/
[oracle@bigdata dbs]$ mkdir -p /meddocdgbak/oracle/
[oracle@bigdata dbs]$ mkdir -p /meddocdgbak/app/oracle/oradata/meddocdgbak/
[oracle@bigdata dbs]$ mkdir -p /meddocdgbak/app/oracle/fast_recovery_area/meddocdgbak/
4.5、修改监听配置文件
修改监听配置文件：
[oracle@bigdata admin]$ vi listener.ora 
[oracle@bigdata admin]$ cat listener.ora 
# listener.ora Network Configuration File: /u01/app/oracle/product/11.2.0/db_1/network/admin/listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (GLOBAL_DBNAME = hisorcldg)
      (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1)
      (SID_NAME = hisorcldg)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = meddocdg)
      (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1)
      (SID_NAME = meddocdg)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = meddocdgbak)
      (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1)
      (SID_NAME = meddocdgbak)
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.133.226)(PORT = 1521))
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
  )

ADR_BASE_LISTENER = /u01/app/oracle

#蓝色为添加部分
4.6、修改 TNS 配置文件
[oracle@bigdata admin]$ vi tnsnames.ora 
[oracle@bigdata admin]$ cat tnsnames.ora 
# tnsnames.ora Network Configuration File: /u01/app/oracle/product/11.2.0/db_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.

HISORCL =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.133.227)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = hisorcl)
    )
  )

HISORCLDG =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.133.226)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = hisorcldg)
    )
  )

ORCL =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.133.225)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )

MEDDOCDG =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.133.226)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = meddocdg)
    )
  )

MEDDOCDGBAK =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.133.226)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = meddocdgbak)
    )
  )

ORCL150 =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.133.150)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl150)
    )
  )

备注：蓝色为添加部分
4.7、重启监听服务
[oracle@bigdata admin]$ lsnrctl stop
[oracle@bigdata admin]$ lsnrctl start

4.8、备库启动到 nomount 状态
[oracle@bigdata admin]$ echo $ORACLE_SID
meddocdgbak
[oracle@bigdata admin]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Wed Dec 1 11:51:36 2021

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

Connected to an idle instance.

SQL> startup nomount pfile='/u01/app/oracle/product/11.2.0/db_1/dbs/pfilemeddocdgbak.ora';
ORACLE instance started.

Total System Global Area 3206836224 bytes
Fixed Size                  2257520 bytes
Variable Size            1811942800 bytes
Database Buffers         1375731712 bytes
Redo Buffers               16904192 bytes
SQL> create spfile from pfile='/u01/app/oracle/product/11.2.0/db_1/dbs/pfilemeddocdgbak.ora';

File created.
SQL> shutdown immediate;
ORA-01507: database not mounted


ORACLE instance shut down.
SQL> startup nomount;
ORACLE instance started.

Total System Global Area 3206836224 bytes
Fixed Size                  2257520 bytes
Variable Size            1811942800 bytes
Database Buffers         1375731712 bytes
Redo Buffers               16904192 bytes

5、验证监听和TNS配置
主库：
ping 192.168.133.226
tnsping meddocdgbak
备库：
ping 192.168.133.150
tnsping orcl150

注：测试OK后，执行以下：
5.1、主库验证
$ sqlplus sys/[email protected]:1521/orcl150 as sysdba
> show parameter db_unique_name;
$ sqlplus sys/[email protected]:1521/meddocdgbak as sysdba     
5.2、备库验证
$ export ORACLE_SID=meddocdgbak
$ sqlplus sys/[email protected]:1521/meddocdgbak as sysdba
$ sqlplus sys/[email protected]:1521/orcl150 as sysdba
备注：在主备库上都能测试通过的条件下才执行下面步骤

6、恢复
6.1、恢复数据库
注：确认备库nomount
然后执行以下：
[oracle@bigdata dbs]$ rman target sys/oracle_4U@orcl150 auxiliary sys/oracle_4U@meddocdgbak

Recovery Manager: Release 11.2.0.4.0 - Production on Wed Dec 1 12:53:27 2021

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

connected to target database: ORCL150 (DBID=4034131047)
connected to auxiliary database: ORCL150 (not mounted)

RMAN> duplicate target database for standby from active database;

Starting Duplicate Db at 01-DEC-21
using target database control file instead of recovery catalog
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=193 device type=DISK

contents of Memory Script:
{
   backup as copy reuse
   targetfile  '/u01/app/oracle/product/11.2.0/db_1/dbs/orapworcl150' auxiliary format 
 '/u01/app/oracle/product/11.2.0/db_1/dbs/orapwmeddocdgbak'   ;
}
executing Memory Script

Starting backup at 01-DEC-21
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=71 device type=DISK
Finished backup at 01-DEC-21

contents of Memory Script:
{
   backup as copy current controlfile for standby auxiliary format  '/u01/app/oracle/oradata/meddocdgbak/control01.ctl';
   restore clone controlfile to  '/u01/app/oracle/fast_recovery_area/meddocdgbak/control02.ctl' from 
 '/u01/app/oracle/oradata/meddocdgbak/control01.ctl';
}
executing Memory Script

Starting backup at 01-DEC-21
using channel ORA_DISK_1
channel ORA_DISK_1: starting datafile copy
copying standby control file
output file name=/u01/app/oracle/product/11.2.0/db_1/dbs/snapcf_orcl150.f tag=TAG20211201T130321 RECID=17 STAMP=1090155801
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:01
Finished backup at 01-DEC-21

Starting restore at 01-DEC-21
using channel ORA_AUX_DISK_1

channel ORA_AUX_DISK_1: copied control file copy
Finished restore at 01-DEC-21

contents of Memory Script:
{
   sql clone 'alter database mount standby database';
}
executing Memory Script

sql statement: alter database mount standby database

contents of Memory Script:
{
   set newname for tempfile  1 to 
 "/meddocdgbak/app/oracle/oradata/meddocdgbak/temp01.dbf";
   switch clone tempfile all;
   set newname for datafile  1 to 
 "/meddocdgbak/app/oracle/oradata/meddocdgbak/system01.dbf";
   set newname for datafile  2 to 
 "/meddocdgbak/app/oracle/oradata/meddocdgbak/sysaux01.dbf";
   set newname for datafile  3 to 
 "/meddocdgbak/app/oracle/oradata/meddocdgbak/undotbs01.dbf";
   set newname for datafile  4 to 
 "/meddocdgbak/app/oracle/oradata/meddocdgbak/users01.dbf";
   set newname for datafile  5 to 
 "/meddocdgbak/app/oracle/oradata/meddocdgbak/example01.dbf";
   set newname for datafile  6 to 
 "/meddocdgbak/oracle/audit01.dbf";
   backup as copy reuse
   datafile  1 auxiliary format 
 "/meddocdgbak/app/oracle/oradata/meddocdgbak/system01.dbf"   datafile 
 2 auxiliary format 
 "/meddocdgbak/app/oracle/oradata/meddocdgbak/sysaux01.dbf"   datafile 
 3 auxiliary format 
 "/meddocdgbak/app/oracle/oradata/meddocdgbak/undotbs01.dbf"   datafile 
 4 auxiliary format 
 "/meddocdgbak/app/oracle/oradata/meddocdgbak/users01.dbf"   datafile 
 5 auxiliary format 
 "/meddocdgbak/app/oracle/oradata/meddocdgbak/example01.dbf"   datafile 
 6 auxiliary format 
 "/meddocdgbak/oracle/audit01.dbf"   ;
   sql 'alter system archive log current';
}
executing Memory Script

executing command: SET NEWNAME

renamed tempfile 1 to /meddocdgbak/app/oracle/oradata/meddocdgbak/temp01.dbf in control file

executing command: SET NEWNAME

executing command: SET NEWNAME

executing command: SET NEWNAME

executing command: SET NEWNAME

executing command: SET NEWNAME

executing command: SET NEWNAME

Starting backup at 01-DEC-21
using channel ORA_DISK_1
channel ORA_DISK_1: starting datafile copy
input datafile file number=00001 name=/u01/app/oracle/oradata/orcl150/system01.dbf
output file name=/meddocdgbak/app/oracle/oradata/meddocdgbak/system01.dbf tag=TAG20211201T130329
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:45
channel ORA_DISK_1: starting datafile copy
input datafile file number=00002 name=/u01/app/oracle/oradata/orcl150/sysaux01.dbf
output file name=/meddocdgbak/app/oracle/oradata/meddocdgbak/sysaux01.dbf tag=TAG20211201T130329
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:36
channel ORA_DISK_1: starting datafile copy
input datafile file number=00005 name=/u01/app/oracle/oradata/orcl150/example01.dbf
output file name=/meddocdgbak/app/oracle/oradata/meddocdgbak/example01.dbf tag=TAG20211201T130329
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:15
channel ORA_DISK_1: starting datafile copy
input datafile file number=00003 name=/u01/app/oracle/oradata/orcl150/undotbs01.dbf
output file name=/meddocdgbak/app/oracle/oradata/meddocdgbak/undotbs01.dbf tag=TAG20211201T130329
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:15
channel ORA_DISK_1: starting datafile copy
input datafile file number=00006 name=/u01/oracle/audit01.dbf
output file name=/meddocdgbak/oracle/audit01.dbf tag=TAG20211201T130329
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
channel ORA_DISK_1: starting datafile copy
input datafile file number=00004 name=/u01/app/oracle/oradata/orcl150/users01.dbf
output file name=/meddocdgbak/app/oracle/oradata/meddocdgbak/users01.dbf tag=TAG20211201T130329
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:01
Finished backup at 01-DEC-21

sql statement: alter system archive log current

contents of Memory Script:
{
   switch clone datafile all;
}
executing Memory Script

datafile 1 switched to datafile copy
input datafile copy RECID=17 STAMP=1090155926 file name=/meddocdgbak/app/oracle/oradata/meddocdgbak/system01.dbf
datafile 2 switched to datafile copy
input datafile copy RECID=18 STAMP=1090155926 file name=/meddocdgbak/app/oracle/oradata/meddocdgbak/sysaux01.dbf
datafile 3 switched to datafile copy
input datafile copy RECID=19 STAMP=1090155926 file name=/meddocdgbak/app/oracle/oradata/meddocdgbak/undotbs01.dbf
datafile 4 switched to datafile copy
input datafile copy RECID=20 STAMP=1090155926 file name=/meddocdgbak/app/oracle/oradata/meddocdgbak/users01.dbf
datafile 5 switched to datafile copy
input datafile copy RECID=21 STAMP=1090155926 file name=/meddocdgbak/app/oracle/oradata/meddocdgbak/example01.dbf
datafile 6 switched to datafile copy
input datafile copy RECID=22 STAMP=1090155926 file name=/meddocdgbak/oracle/audit01.dbf
Finished Duplicate Db at 01-DEC-21

6.2、开启实时同步
备库执行：
> alter database open;
> select status from v$instance;
> select database_role,open_mode from v$database;

DATABASE_ROLE    OPEN_MODE
---------------- --------------------
PHYSICAL STANDBY READ ONLY WITH APPLY
> alter database recover managed standby database using current logfile disconnect from session; 
7、验证同步
7.1、最大归档序号
主库执行：
SQL> select max(sequence#) from v$archived_log;

MAX(SEQUENCE#)
--------------
            39
备库验证：
SQL> select max(sequence#) from v$archived_log;

MAX(SEQUENCE#)
--------------
            39
7.2、日志切换
主库执行：
SQL> alter system archive log current;

System altered.

SQL> select max(sequence#) from v$archived_log;

MAX(SEQUENCE#)
--------------
            40
备库验证：
SQL> select max(sequence#) from v$archived_log;

MAX(SEQUENCE#)
--------------
            40
7.3、主备库状态
主库执行：
SQL> select switchover_status,database_role from v$database;

SWITCHOVER_STATUS                        DATABASE_ROLE
---------------------------------------- --------------------------------
SESSIONS ACTIVE                          PRIMARY

备库执行：
SQL> select switchover_status,database_role from v$database;

SWITCHOVER_STATUS                        DATABASE_ROLE
---------------------------------------- --------------------------------
NOT ALLOWED                              PHYSICAL STANDBY
7.4、创建表测试
主库执行：
SQL> create table dg(id number);
SQL> insert into dg values(1);
SQL> commit;
SQL> select * from dg;

        ID
----------
         1
备库验证：
SQL> select * from dg;

        ID
----------
         1
DG 同步，DG搭建结束.


标签：meddocdgbak,datafile,备库,app,0.4,11.2,oradata,oracle,u01
From： https://blog.51cto.com/u_12991611/5935007

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