oracle11.2.0.4-active datagurd安装配置全过程实战

Database Name :- primarydb

Primary db_unique_name :- primarydb

standby db_unique_name :- targetdb

===========================================

hosts文件配置

127.0.0.1 localhost

192.168.137.20 primarydb

192.168.137.30 targetdb

主库创建完成数据库primarydb，备库安装完软件不建库，开始配置dg。

primarydb listener.ora

=====================================================================

LISTENER =

(DESCRIPTION_LIST =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.137.20)(PORT = 1521))

(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))

)

)

SID_LIST_LISTENER =

(SID_LIST =

(SID_DESC =

(GLOBAL_DBNAME = primarydb)

(SERVICE_NAME = primarydb)

(SID_NAME = primarydb)

(ORACLE_HOME = /local/oracle/OraHome1)

)

(SID_DESC =

(GLOBAL_DBNAME = primarydb_DGMGRL)

(SERVICE_NAME = primarydb)

(SID_NAME = primarydb)

(ORACLE_HOME = /local/oracle/OraHome1)

)

)

ADR_BASE_LISTENER = /local/oracle

targetdb listener.ora

=====================================================================

LISTENER =

(DESCRIPTION_LIST =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.137.30)(PORT = 1521))

(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))

)

)

SID_LIST_LISTENER =

(SID_LIST =

(SID_DESC =(GLOBAL_DBNAME = targetdb)

(SERVICE_NAME = targetdb)

(SID_NAME = targetdb)

(ORACLE_HOME = /local/oracle/OraHome1))

(SID_DESC =(GLOBAL_DBNAME = targetdb_DGMGRL)

(SERVICE_NAME = targetdb)

(SID_NAME = targetdb)

(ORACLE_HOME = /local/oracle/OraHome1))

)

ADR_BASE_LISTENER = /local/oracle

====================================================================

tnsnames.ora 两节点配置一样

BEIJING =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.137.20)(PORT = 1521))

(CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = primarydb)(UR=A)

)

)

CHICAGO =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.137.30)(PORT = 1521))

(CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = targetdb)(UR=A)

)

)

% tnsping beijing

% tnsping CHICAGO

确保主数据库是 archivelog 模式。

shutdown immediate;

startup mount

alter database archivelog;

alter database open;

archive log list;

alter system set log_archive_dest_1='location=/archlog';

SQL> select log_mode from v$database;

LOG_MODE

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

ARCHIVELOG

修改主数据库参数

SQL> alter database force logging;

Database altered.

SQL> select DB_UNIQUE_NAME,OPEN_MODE,FORCE_LOGGING,DATABASE_ROLE,SWITCHOVER_STATUS from v$database;

DB_UNIQUE_NAME OPEN_MODE FOR DATABASE_ROLE SWITCHOVER_STATUS

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

primarydb READ WRITE YES PRIMARY NOT ALLOWED

===============================================================================================================

创建standby redo 为N+1组 N为目前组数，standby=N+1

SQL> col member for a50

SQL> select group#,status,type,member,IS_RECOVERY_DEST_FILE from v$logfile order by 1;

GROUP# STATUS TYPE MEMBER IS_

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

1 ONLINE /local/oracle/oradata/primarydb/redo01.log NO

2 ONLINE /local/oracle/oradata/primarydb/redo02.log NO

3 ONLINE /local/oracle/oradata/primarydb/redo03.log NO

select group#,bytes/1024/1024 from v$log;

GROUP# BYTES/1024/1024

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

1 50

2 50

3 50

SQL> alter database add standby logfile '/local/oracle/oradata/primarydb/standby01.log' size 50M;

SQL> alter database add standby logfile '/local/oracle/oradata/primarydb/standby02.log' size 50M;

SQL> alter database add standby logfile '/local/oracle/oradata/primarydb/standby03.log' size 50M;

SQL> alter database add standby logfile '/local/oracle/oradata/primarydb/standby04.log' size 50M;

============================================================================================

备库

创建需要的目录和参数文件

mkdir -p /local/oracle/admin/targetdb/adump

mkdir -p /oradata/targetdb/

mkdir -p /archlog

创建密码文件 命名规则 orapw+sid

scp /local/oracle/OraHome1/dbs/orapwprimarydb 192.168.170.30:/local/oracle/OraHome1/dbs/orapwtargetdb

创建init.ora文件

[oracle@targetdb dbs]$ vi inittargetdb.ora

DB_NAME=primarydb

==============================================================================================

四：将备库启动到nomount状态，然后连接主库进行duplicate操作

$ lsnrctl start

sqlplus "/ as sysdba"

SQL> startup nomount pfile=/local/oracle/OraHome1/dbs/inittargetdb.ora

从备机验证“AS SYSDBA”连接正在运行

SQL> connect sys/oracle@BEIJING AS SYSDBA

主机上进行数据同步

创建同步脚本

vi /home/oracle/dup.txt

run{

allocate channel prmy1 type disk;

allocate channel prmy2 type disk;

allocate channel prmy3 type disk;

allocate auxiliary channel stby4 type disk;

allocate auxiliary channel stby5 type disk;

allocate auxiliary channel stby6 type disk;

duplicate targetdb database for standby from active database

spfile

parameter_value_convert 'primarydb','targetdb'

set db_unique_name='targetdb'

set db_file_name_convert='/primarydb/','/targetdb/'

set log_file_name_convert='/primarydb/','/targetdb/'

set log_archive_max_processes='5'

set fal_client='chicago'

set fal_server='beijing'

set standby_file_management='AUTO'

set log_archive_config='dg_config=(primarydb,targetdb)'

set log_archive_dest_2='service=beijing ASYNC NOAFFIRM REOPEN=60 valid_for=(ONLINE_LOGFILE,PRIMARY_ROLE) db_unique_name=primarydb'

nofilenamecheck;

release channel prmy1;

release channel prmy2;

release channel prmy3;

release channel stby4;

release channel stby5;

release channel stby6;

}

rman targetdb sys/oracle@beijing auxiliary sys/oracle@chicago

rman> @dup.txt

完成后在主库上修改参数

alter system set log_archive_config='DG_CONFIG=(primarydb,targetdb)' scope=both;

alter system set log_archive_dest_2='SERVICE=chicago ASYNC NOAFFIRM REOPEN=60 valid_for=(online_logfile,primary_role) db_unique_name=targetdb' scope=both;

alter system set fal_client='beijing' scope=both;

alter system set fal_server='chicago' scope=both;

alter system set log_archive_dest_state_1='ENABLE' scope=both;

alter system set log_archive_dest_state_2='ENABLE' scope=both;

alter system set standby_file_management='AUTO' scope=both;

alter system set remote_login_passwordfile='EXCLUSIVE' scope=both;

备机上执行

alter system set log_archive_dest_state_1='ENABLE' scope=both;

alter system set log_archive_dest_state_2='ENABLE' scope=both;

alter system set remote_login_passwordfile='EXCLUSIVE' scope=both;

将备库置于active dataguard模式下现在连接备用数据库 sqlplus 并启动 MRP（管理恢复进程）。

比较主数据库的最新序列和 MRP（管理恢复进程）的应用序列。

SQL> select process,status from v$managed_standby;

查看archilog 目录中归档数量是否一致。

select thread#,max(sequence#) from v$log_history group by thread#;

查询结果数值必须一致。

开始应用恢复日志

SQL>alter database recover managed standby database using current logfile disconnect from session;

SQL> select open_mode,database_role,db_unique_name from v$database;

五. 用只读模式打开 DB 并启动恢复。

SQL> alter database recover managed standby database cancel;

SQL> alter database open;

SQL> alter database recover managed standby database using current logfile disconnect;

查看数据库状态

在备库

SQL> select process,status from v$managed_standby;

PROCESS STATUS

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

ARCH CLOSING

ARCH CONNECTED

RFS IDLE

RFS IDLE

MRP0 APPLYING_LOG

select thread#,max(sequence#) from v$log_history group by thread#;

查询结果数值必须一致

在主节点多次切换日志文件，查询主备节点是否一致

alter system switch logfile;

select thread#,max(sequence#) from v$log_history group by thread#;

--以下为查询DataGuard状态

select thread#,sequence#,archived,applied from v$archived_log order by sequence# desc;

切换操作

=============================主备切换===============================================================

查看节点主备关系

主

SQL> select database_role,OPEN_MODE,PROTECTION_MODE,PROTECTION_LEVEL,SWITCHOVER_STATUS from v$database;

SWITCHOVER_STATUS

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

TO STANDBY

备

SQL> select database_role,OPEN_MODE,PROTECTION_MODE,PROTECTION_LEVEL,SWITCHOVER_STATUS from v$database;

SWITCHOVER_STATUS

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

TO PRIMARY

2.将主库切换至备用模式

SQL> alter database commit to switchover to physical standby with session shutdown;

SQL> select database_role,OPEN_MODE,PROTECTION_MODE,PROTECTION_LEVEL,SWITCHOVER_STATUS from v$database;

3 将备库切成主库的角色

SQL> alter database recover managed standby database cancel;

SQL> alter database commit to switchover to primary;

SQL> select database_role,OPEN_MODE,PROTECTION_MODE,PROTECTION_LEVEL,SWITCHOVER_STATUS from v$database;

SQL> alter database open;

SQL> select database_role,OPEN_MODE,PROTECTION_MODE,PROTECTION_LEVEL,SWITCHOVER_STATUS from v$database;

4 将原主库启动到mount

$sqlplus “/ as sysdba”

SQL> startup mount

5 将原主库开始恢复应用日志

SQL> alter database recover managed standby database using current logfile disconnect from session;

SQL> select database_role,OPEN_MODE,PROTECTION_MODE,PROTECTION_LEVEL,SWITCHOVER_STATUS from v$database;

6 打开原主库并恢复应用日志

SQL> alter database recover managed standby database cancel;

SQL> alter database open;

SQL> select database_role,OPEN_MODE,PROTECTION_MODE,PROTECTION_LEVEL,SWITCHOVER_STATUS from v$database;

SQL> alter database recover managed standby database using current logfile disconnect from session;

SQL> select database_role,OPEN_MODE,PROTECTION_MODE,PROTECTION_LEVEL,SWITCHOVER_STATUS from v$database;

===================================主（原备）-〉备（原主）切换=========================================================

1 查看节点主备关系

主（原备）

SQL> select database_role,OPEN_MODE,PROTECTION_MODE,PROTECTION_LEVEL,SWITCHOVER_STATUS from v$database;

SWITCHOVER_STATUS

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

TO STANDBY

备（原主）

SQL> select database_role,OPEN_MODE,PROTECTION_MODE,PROTECTION_LEVEL,SWITCHOVER_STATUS from v$database;

SWITCHOVER_STATUS

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

TO PRIMARY

2.将主（原备）库切换至备用模式

SQL> alter database commit to switchover to physical standby with session shutdown;

SQL> select database_role,OPEN_MODE,PROTECTION_MODE,PROTECTION_LEVEL,SWITCHOVER_STATUS from v$database;

3 将备（原主）库切成主库的角色

SQL> alter database recover managed standby database cancel;

SQL> alter database commit to switchover to primary;

SQL> select database_role,OPEN_MODE,PROTECTION_MODE,PROTECTION_LEVEL,SWITCHOVER_STATUS from v$database;

SQL> alter database open;

SQL> select database_role,OPEN_MODE,PROTECTION_MODE,PROTECTION_LEVEL,SWITCHOVER_STATUS from v$database;

4 将主（原备）库启动

$sqlplus “/ as sysdba”

SQL> startup

SQL> alter database recover managed standby database using current logfile disconnect from session;

SQL> select database_role,OPEN_MODE,PROTECTION_MODE,PROTECTION_LEVEL,SWITCHOVER_STATUS from v$database;