Duplicate复制数据库并创建物理StandBy(pfile版本)
Duplicate复制数据库并创建物理StandBy(pfile版本)
小强斋太 发表于1年前
Duplicate复制数据库并创建物理StandBy(pfile版本)
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1设定环境如下:

Primary数据库

IP 172.17.22.16
SID orcl

Standby数据库

IP 172.17.22.17
SID orcl

设置提示,以区分操作的位置

primary数据库 

set SQLPROMPT Primary>

standby数据库

set SQLPROMPT StandBy>

1、Primary端设置 归档模式+强制日志

确保primary数据库运行在归档模式

Primary>archive log list Database log mode No Archive Mode Automatic archival Disabled Archive destination USE_DB_RECOVERY_FILE_DEST Oldest online log sequence     5
Current log sequence           7
Primary>shutdown immediate; Database closed. Database dismounted. ORACLE instance shut down. Primary>startup mount ORACLE instance started. Total System Global Area 3290345472 bytes Fixed Size 2217832 bytes Variable Size 1795164312 bytes Database Buffers     1476395008 bytes Redo Buffers 16568320 bytes Database mounted. Primary>alter database archivelog; Database altered. Primary>alter database open; Database altered. Primary>archive log list Database log mode Archive Mode Automatic archival Enabled Archive destination USE_DB_RECOVERY_FILE_DEST Oldest online log sequence     5
Next log sequence to archive   7
Current log sequence           7
Primary>

开启强制日志

Primary>select force_logging from v$database; FOR --- NO Primary>alter database force logging; Database altered.

2、standby端创建相关目录

为了和Primary库保存相同的结构,我们需要在Standby数据库建立相同的目录,首先查询现有Primary数据库的相关目录

Primary>col name for a30 Primary>col value for a100 Primary>select name ,value from v$parameter  where name in ('audit_file_dest','background_dump_dest','control_files','core_dump_dest','user_dump_dest') ORDER BY name ASC; NAME VALUE ------------------------------ ---------------------------------------------------------------------------------------------audit_file_dest            /usr/oracle/app/admin/orcl/adump background_dump_dest /usr/oracle/app/diag/rdbms/orcl/orcl/trace control_files /usr/oracle/app/oradata/orcl/control01.ctl, /usr/oracle/app/flash_recovery_area/orcl/control02.ctl core_dump_dest /usr/oracle/app/diag/rdbms/orcl/orcl/cdump user_dump_dest /usr/oracle/app/diag/rdbms/orcl/orcl/trace

在standby数据库服务器创建相同的目录

[oracle@oracledb ~]$ mkdir -p /usr/oracle/app/admin/orcl/adump [oracle@oracledb ~]$ mkdir -p /usr/oracle/app/diag/rdbms/orcl/orcl/trace [oracle@oracledb ~]$ mkdir -p /usr/oracle/app/oradata/orcl [oracle@oracledb ~]$ mkdir -p /usr/oracle/app/flash_recovery_area/orcl [oracle@oracledb ~]$ mkdir -p /usr/oracle/app/diag/rdbms/orcl/orcl/
[oracle@oracledb ~]$ mkdir -p /usr/oracle/app/diag/rdbms/orcl/orcl/trace

3、创建辅助实例密钥文件

方法一: 直接从Primary数据库复制密钥文件过来

[oracle@oracledb dbs]$ scp orapworcl 172.17.22.17:/usr/oracle/app/product/11.2.0/dbhome_1/dbs oracle@172.17.22.17's password: orapworcl 100% 1536 1.5KB/s 00:00 [oracle@oracledb dbs]$

方法二: orapwd生成

orapwd FILE=/usr/oracle/app/product/11.2.0/dbhome_1/dbs/orapworcl password=wangshengzhuang entries=30;

4、生成standby端的pfile

在Primary端根据spfile生产pfile

Primary>create pfile from spfile; File created.

修改Primary端的pfile内容如下

orcl.__db_cache_size=1476395008 orcl.__java_pool_size=16777216 orcl.__large_pool_size=16777216 orcl.__oracle_base='/usr/oracle/app'#ORACLE_BASE set from environment orcl.__pga_aggregate_target=1325400064 orcl.__sga_target=1979711488 orcl.__shared_io_pool_size=0 orcl.__shared_pool_size=436207616 orcl.__streams_pool_size=0
*.audit_file_dest='/usr/oracle/app/admin/orcl/adump'
*.audit_trail='db'
*.compatible='11.2.0.0.0'
*.control_files='/usr/oracle/app/oradata/orcl/control01.ctl','/usr/oracle/app/flash_recovery_area/orcl/control02.ctl'
*.db_block_size=8192
*.db_domain=''
*.db_name='orcl'
*.db_recovery_file_dest='/usr/oracle/app/flash_recovery_area'
*.db_recovery_file_dest_size=4070572032
*.diagnostic_dest='/usr/oracle/app'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=orclXDB)'
*.memory_target=3299868672
*.nls_language='SIMPLIFIED CHINESE'
*.nls_territory='CHINA'
*.open_cursors=300
*.processes=150
*.remote_login_passwordfile='EXCLUSIVE'
*.undo_tablespace='UNDOTBS1'




*.DB_UNIQUE_NAME=db_primary *.LOG_ARCHIVE_CONFIG='DG_CONFIG=(db_primary,db_standby)'
*.LOG_ARCHIVE_DEST_2='SERVICE=tns_standby ARCH VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=db_standby'
*.LOG_ARCHIVE_DEST_STATE_2=DEFER *.FAL_SERVER=tns_standby *.FAL_CLIENT=tns_primary *.STANDBY_FILE_MANAGEMENT=AUTO

Primary端重新启动

Primary>create spfile from pfile; File created. Primary>startup ORACLE instance started. Total System Global Area 3290345472 bytes Fixed Size 2217832 bytes Variable Size 1795164312 bytes Database Buffers     1476395008 bytes Redo Buffers 16568320 bytes Database mounted. Database opened. Primary>show parameter fal NAME TYPE VALUE ------------------------------------ ---------------------- ------------------------------
fal_client string tns_primary fal_server string tns_standby

复制生成的initorcl.ora到standby的$ORACLE_HOME/dbs目录下,

[oracle@oracledb dbs]$ pwd /usr/oracle/app/product/11.2.0/dbhome_1/dbs [oracle@oracledb dbs]$ scp initorcl.ora 172.17.22.17:/usr/oracle/app/product/11.2.0/dbhome_1/dbs The authenticity of host '172.17.22.17 (172.17.22.17)' can't be established. RSA key fingerprint is 72:28:f5:f9:9c:f8:49:23:48:6d:9d:d4:0e:0c:89:71. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '172.17.22.17' (RSA) to the list of known hosts. oracle@172.17.22.17's password: initorcl.ora 100% 1291     1.3KB/s   00:00    
[oracle@oracledb dbs]$

修改standbyd端的initorcl.ora文件,内容如下

orcl.__db_cache_size=1476395008 orcl.__java_pool_size=16777216 orcl.__large_pool_size=16777216 orcl.__oracle_base='/usr/oracle/app'#ORACLE_BASE set from environment orcl.__pga_aggregate_target=1325400064 orcl.__sga_target=1979711488 orcl.__shared_io_pool_size=0 orcl.__shared_pool_size=436207616 orcl.__streams_pool_size=0
*.audit_file_dest='/usr/oracle/app/admin/orcl/adump'
*.audit_trail='db'
*.compatible='11.2.0.0.0'
*.control_files='/usr/oracle/app/oradata/orcl/control01.ctl','/usr/oracle/app/flash_recovery_area/orcl/control02.ctl'
*.db_block_size=8192
*.db_domain=''
*.db_name='orcl'
*.db_recovery_file_dest='/usr/oracle/app/flash_recovery_area'
*.db_recovery_file_dest_size=4070572032
*.diagnostic_dest='/usr/oracle/app'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=orclXDB)'
*.memory_target=3299868672
*.nls_language='SIMPLIFIED CHINESE'
*.nls_territory='CHINA'
*.open_cursors=300
*.processes=150
*.remote_login_passwordfile='EXCLUSIVE'
*.undo_tablespace='UNDOTBS1'




*.DB_UNIQUE_NAME=db_standby *.LOG_ARCHIVE_CONFIG='DG_CONFIG=(db_primary,db_standby)'
*.LOG_ARCHIVE_DEST_2='SERVICE=tns_primary ARCH VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=db_primary'
*.LOG_ARCHIVE_DEST_STATE_2=ENABLE *.FAL_SERVER=tns_primary *.FAL_CLIENT=tns_standby *.STANDBY_FILE_MANAGEMENT=AUTO

通过复制的pfile创建Standby数据库的spfile

StandBy> create spfile from pfile; File created.

启动到nomount环境

SQL> startup nomount ORACLE instance started. Total System Global Area 3290345472 bytes Fixed Size 2217832 bytes Variable Size 1795164312 bytes Database Buffers 1476395008 bytes Redo Buffers 16568320 bytes

5、配置监听服务

Primary端监听

# listener.ora Network Configuration File: /usr/oracle/app/product/11.2.0/dbhome_1/network/admin/listener.ora # Generated by Oracle configuration tools. LISTENER = (DESCRIPTION_LIST = (DESCRIPTION = (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521)) (ADDRESS = (PROTOCOL = TCP)(HOST = 172.17.22.16)(PORT = 1521)) ) ) ADR_BASE_LISTENER = /usr/oracle/app

StandBy端监听(配置了静态监听 服务名GLOBAL_DBNAME = StandBy

# listener.ora Network Configuration File: /usr/oracle/app/product/11.2.0/dbhome_1/network/admin/listener.ora # Generated by Oracle configuration tools. SID_LIST_LISTENER = (SID_LIST = (SID_DESC = (GLOBAL_DBNAME = StandBy) (ORACLE_HOME =/usr/oracle/app/product/11.2.0/dbhome_1) (SID_NAME = orcl) ) ) LISTENER = (DESCRIPTION_LIST = (DESCRIPTION = (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521)) (ADDRESS = (PROTOCOL = TCP)(HOST = 172.17.22.17)(PORT = 1521)) ) ) ADR_BASE_LISTENER = /usr/oracle/app

启动standby端监听

[oracle@oracledb admin]$ lsnrctl start LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 23-DEC-2015 15:48:15 Copyright (c) 1991, 2009, Oracle.  All rights reserved. Starting /usr/oracle/app/product/11.2.0/dbhome_1/bin/tnslsnr: please wait... TNSLSNR for Linux: Version 11.2.0.1.0 - Production System parameter file is /usr/oracle/app/product/11.2.0/dbhome_1/network/admin/listener.ora Log messages written to /usr/oracle/app/diag/tnslsnr/oracledb/listener/alert/log.xml Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521))) Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=172.17.22.17)(PORT=1521))) Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521))) STATUS of the LISTENER ------------------------
Alias LISTENER Version TNSLSNR for Linux: Version 11.2.0.1.0 - Production Start Date 23-DEC-2015 15:48:16 Uptime 0 days 0 hr. 0 min. 0 sec Trace Level               off Security ON: Local OS Authentication SNMP OFF Listener Parameter File   /usr/oracle/app/product/11.2.0/dbhome_1/network/admin/listener.ora Listener Log File         /usr/oracle/app/diag/tnslsnr/oracledb/listener/alert/log.xml Listening Endpoints Summary... (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521))) (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=172.17.22.17)(PORT=1521))) Services Summary... Service "StandBy" has 1 instance(s). Instance "orcl", status UNKNOWN, has 1 handler(s) for this service... The command completed successfully

6、配置网络服务名,并测试互通性

Primary端和StandBy端都要进行如下配置:

tns_primary = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 172.17.22.16)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = db_primary) ) ) tns_standby = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 172.17.22.17)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME =StandBy ) ) )

***********************************************************************************************

SERVICE_NAME 的值参考lsnrctl的输出,确保用sqlplus工具或者navicact工具能够连接SERVICE_NAME

因为fal_server 会使用服务名,如果配置不正确,这归档日志无法正常发送

***********************************************************************************************

在primary端和standby端都进行测试(为了角色切换)

[oracle@oracledb admin]$ tnsping tns_primary TNS Ping Utility for Linux: Version 11.2.0.1.0 - Production on 23-DEC-2015 15:48:44 Copyright (c) 1997, 2009, Oracle.  All rights reserved. Used parameter files: /usr/oracle/app/product/11.2.0/dbhome_1/network/admin/sqlnet.ora Used TNSNAMES adapter to resolve the alias Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 172.17.22.16)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = orcl))) OK (0 msec) [oracle@oracledb admin]$ tnsping tns_standby TNS Ping Utility for Linux: Version 11.2.0.1.0 - Production on 23-DEC-2015 15:48:49 Copyright (c) 1997, 2009, Oracle.  All rights reserved. Used parameter files: /usr/oracle/app/product/11.2.0/dbhome_1/network/admin/sqlnet.ora Used TNSNAMES adapter to resolve the alias Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 172.17.22.17)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = orcl))) OK (0 msec)

7、duplicate standby

rman连接两个数据库

[oracle@oracledb admin]$ rman target sys/wangshengzhuang@tns_primary auxiliary sys/wangshengzhuang@tns_standby Recovery Manager: Release 11.2.0.1.0 - Production on Wed Dec 23 16:11:51 2015 Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved. connected to target database: ORCL (DBID=1426832466) connected to auxiliary database: ORCL (not mounted)

开始复制

RMAN> DUPLICATE TARGET DATABASE FOR STANDBY FROM ACTIVE DATABASE DORECOVER NOFILENAMECHECK; Starting Duplicate Db at 23-DEC-15 using target database control file instead of recovery catalog allocated channel: ORA_AUX_DISK_1 channel ORA_AUX_DISK_1: SID=20 device type=DISK RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-03002: failure of Duplicate Db command at 12/23/2015 16:13:38 RMAN-05541: no archived logs found in target database

primary端切换下日志,重写执行rman duplicate即可

SYS@orcl>alter system switch logfile; System altered. SYS@orcl>quit Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options [oracle@oracledb admin]$ rman target sys/wangshengzhuang@tns_primary auxiliary sys/wangshengzhuang@tns_standby Recovery Manager: Release 11.2.0.1.0 - Production on Wed Dec 23 16:14:59 2015 Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved. connected to target database: ORCL (DBID=1426832466) connected to auxiliary database: ORCL (not mounted) RMAN> DUPLICATE TARGET DATABASE FOR STANDBY FROM ACTIVE DATABASE DORECOVER NOFILENAMECHECK; Starting Duplicate Db at 23-DEC-15 using target database control file instead of recovery catalog allocated channel: ORA_AUX_DISK_1 channel ORA_AUX_DISK_1: SID=18 device type=DISK contents of Memory Script: { backup as copy reuse targetfile '/usr/oracle/app/product/11.2.0/dbhome_1/dbs/orapworcl' auxiliary format '/usr/oracle/app/product/11.2.0/dbhome_1/dbs/orapworcl' ; } executing Memory Script Starting backup at 23-DEC-15 allocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=39 device type=DISK Finished backup at 23-DEC-15 contents of Memory Script: { backup as copy current controlfile for standby auxiliary format  '/usr/oracle/app/oradata/orcl/control01.ctl'; restore clone controlfile to  '/usr/oracle/app/flash_recovery_area/orcl/control02.ctl' from 
 '/usr/oracle/app/oradata/orcl/control01.ctl'; } executing Memory Script Starting backup at 23-DEC-15 using channel ORA_DISK_1 channel ORA_DISK_1: starting datafile copy copying standby control file output file name=/usr/oracle/app/product/11.2.0/dbhome_1/dbs/snapcf_orcl.f tag=TAG20151223T161504 RECID=1 STAMP=899223305 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:01 Finished backup at 23-DEC-15 Starting restore at 23-DEC-15 using channel ORA_AUX_DISK_1 channel ORA_AUX_DISK_1: copied control file copy Finished restore at 23-DEC-15 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 "/usr/oracle/app/oradata/orcl/temp01.dbf"; switch clone tempfile all; set newname for datafile  1 to "/usr/oracle/app/oradata/orcl/system01.dbf"; set newname for datafile  2 to "/usr/oracle/app/oradata/orcl/sysaux01.dbf"; set newname for datafile  3 to "/usr/oracle/app/oradata/orcl/undotbs01.dbf"; set newname for datafile  4 to "/usr/oracle/app/oradata/orcl/users01.dbf"; backup as copy reuse datafile 1 auxiliary format "/usr/oracle/app/oradata/orcl/system01.dbf" datafile 2 auxiliary format "/usr/oracle/app/oradata/orcl/sysaux01.dbf" datafile 3 auxiliary format "/usr/oracle/app/oradata/orcl/undotbs01.dbf" datafile 4 auxiliary format "/usr/oracle/app/oradata/orcl/users01.dbf" ; sql 'alter system archive log current'; } executing Memory Script executing command: SET NEWNAME renamed tempfile 1 to /usr/oracle/app/oradata/orcl/temp01.dbf in control file executing command: SET NEWNAME executing command: SET NEWNAME executing command: SET NEWNAME executing command: SET NEWNAME Starting backup at 23-DEC-15 using channel ORA_DISK_1 channel ORA_DISK_1: starting datafile copy input datafile file number=00001 name=/usr/oracle/app/oradata/orcl/system01.dbf output file name=/usr/oracle/app/oradata/orcl/system01.dbf tag=TAG20151223T161512 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:15 channel ORA_DISK_1: starting datafile copy input datafile file number=00002 name=/usr/oracle/app/oradata/orcl/sysaux01.dbf output file name=/usr/oracle/app/oradata/orcl/sysaux01.dbf tag=TAG20151223T161512 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=/usr/oracle/app/oradata/orcl/undotbs01.dbf output file name=/usr/oracle/app/oradata/orcl/undotbs01.dbf tag=TAG20151223T161512 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=/usr/oracle/app/oradata/orcl/users01.dbf output file name=/usr/oracle/app/oradata/orcl/users01.dbf tag=TAG20151223T161512 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:01 Finished backup at 23-DEC-15 sql statement: alter system archive log current contents of Memory Script: { backup as copy reuse archivelog like  "/usr/oracle/app/flash_recovery_area/ORCL/archivelog/2015_12_23/o1_mf_1_8_c7np1mbd_.arc" auxiliary format "/usr/oracle/app/flash_recovery_area/DB_STANDBY/archivelog/2015_12_23/o1_mf_1_8_%u_.arc" ; catalog clone recovery area; switch clone datafile all; } executing Memory Script Starting backup at 23-DEC-15 using channel ORA_DISK_1 channel ORA_DISK_1: starting archived log copy input archived log thread=1 sequence=8 RECID=2 STAMP=899223347 output file name=/usr/oracle/app/flash_recovery_area/DB_STANDBY/archivelog/2015_12_23/o1_mf_1_8_06qpi3pj_.arc RECID=0 STAMP=0 channel ORA_DISK_1: archived log copy complete, elapsed time: 00:00:01 Finished backup at 23-DEC-15 searching for all files in the recovery area List of Files Unknown to the Database
=====================================
File Name: /usr/oracle/app/flash_recovery_area/DB_STANDBY/archivelog/2015_12_23/o1_mf_1_8_06qpi3pj_.arc cataloging files... cataloging done List of Cataloged Files =======================
File Name: /usr/oracle/app/flash_recovery_area/DB_STANDBY/archivelog/2015_12_23/o1_mf_1_8_06qpi3pj_.arc datafile 1 switched to datafile copy input datafile copy RECID=1 STAMP=899223348 file name=/usr/oracle/app/oradata/orcl/system01.dbf datafile 2 switched to datafile copy input datafile copy RECID=2 STAMP=899223348 file name=/usr/oracle/app/oradata/orcl/sysaux01.dbf datafile 3 switched to datafile copy input datafile copy RECID=3 STAMP=899223348 file name=/usr/oracle/app/oradata/orcl/undotbs01.dbf datafile 4 switched to datafile copy input datafile copy RECID=4 STAMP=899223348 file name=/usr/oracle/app/oradata/orcl/users01.dbf contents of Memory Script: { set until scn  1028421; recover standby clone database
    delete archivelog ; } executing Memory Script executing command: SET until clause Starting recover at 23-DEC-15 using channel ORA_AUX_DISK_1 starting media recovery archived log for thread 1 with sequence 8 is already on disk as file /usr/oracle/app/flash_recovery_area/DB_STANDBY/archivelog/2015_12_23/o1_mf_1_8_06qpi3pj_.arc archived log file name=/usr/oracle/app/flash_recovery_area/DB_STANDBY/archivelog/2015_12_23/o1_mf_1_8_06qpi3pj_.arc thread=1 sequence=8 media recovery complete, elapsed time: 00:00:00 Finished recover at 23-DEC-15 Finished Duplicate Db at 23-DEC-15 RMAN>

8、启用日志传送

Primary>show parameter LOG_ARCHIVE_DEST_STATE_2 NAME TYPE VALUE ------------------------------------ ---------------------- ------------------------------
log_archive_dest_state_2 string DEFER log_archive_dest_state_20 string enable log_archive_dest_state_21 string enable log_archive_dest_state_22 string enable log_archive_dest_state_23 string enable log_archive_dest_state_24 string enable log_archive_dest_state_25 string enable log_archive_dest_state_26 string enable log_archive_dest_state_27 string enable log_archive_dest_state_28 string enable log_archive_dest_state_29 string enable Primary>alter system set LOG_ARCHIVE_DEST_STATE_2=ENABLE; System altered.

8、验证结果

查询primary数据库角色

Primary>select database_role from v$database; DATABASE_ROLE --------------------------------
PRIMARY

查询standby数据库角色

StandBy>select database_role from v$database; DATABASE_ROLE --------------------------------
PHYSICAL STANDBY StandBy>

primary端插入一条数据

Primary> INSERT INTO "SCOTT"."DEPT" ("DEPTNO", "DNAME", "LOC") VALUES ('12', 'OPERATIONS', 'OPERATIONS'); 1 row created. Primary>commit; Commit complete. Primary>alter system switch logfile; System altered.

standby端:启动redo应用、暂停redo应用 打开数据库,查询数据是否被同步过来了

StandBy>alter database recover managed standby database disconnect from session; Database altered. StandBy>alter database recover managed standby database cancel; Database altered. StandBy>alter database open; Database altered. StandBy>select open_mode from v$database; OPEN_MODE ----------------------------------------
READ ONLY StandBy>

见证奇迹的时刻:

StandBy>select * from scott.dept; DEPTNO DNAME LOC ---------- ---------------------------- --------------------------
    10 ACCOUNTING NEW YORK 20 RESEARCH DALLAS 30 SALES CHICAGO 40 OPERATIONS BOSTON 12 OPERATIONS            OPERATIONS

9、启用实时应用redo

添加redo log

首先查询当前redo log的大小、位置

Primary>col group# for 9
Primary>col status for a10 Primary>col type for a10 Primary>col member for a50; Primary>col is_rec for a10 Primary>select * from v$logfile; GROUP# STATUS TYPE MEMBER IS_REC ------ ---------- ---------- -------------------------------------------------- ------
     3          ONLINE     /usr/oracle/app/oradata/orcl/redo03.log NO 2          ONLINE     /usr/oracle/app/oradata/orcl/redo02.log NO 1          ONLINE     /usr/oracle/app/oradata/orcl/redo01.log NO Primary>select * from v$log; GROUP# THREAD# SEQUENCE# BYTES BLOCKSIZE MEMBERS ARCHIV STATUS FIRST_CHANGE# FIRST_TIME NEXT_CHANGE# NEXT_TIME ------ ---------- ---------- ---------- ---------- ---------- ------ ---------- ------------- ------------ ------------ ------------
     1        1      10   52428800        512        1 NO     CURRENT          1029234 23-DEC-15      2.8147E+14
     2        1       8   52428800        512        1 YES    INACTIVE          1028340 23-DEC-15     1028421 23-DEC-15
     3        1       9   52428800        512        1 YES    INACTIVE          1028421 23-DEC-15     1029234 23-DEC-15

 

当前有三组、每组1个member、大小为50M, 我们增加四组,每组1个member,大小为50M

Primary>ALTER DATABASE ADD STANDBY   LOGFILE GROUP 4('/usr/oracle/app/oradata/orcl/stbyredolog4a.log') SIZE  50 M; Database altered. Primary>ALTER DATABASE ADD STANDBY   LOGFILE GROUP 5('/usr/oracle/app/oradata/orcl/stbyredolog5a.log') SIZE  50 M; Database altered. Primary>ALTER DATABASE ADD STANDBY   LOGFILE GROUP 6('/usr/oracle/app/oradata/orcl/stbyredolog6a.log') SIZE  50 M; Database altered. Primary>ALTER DATABASE ADD STANDBY   LOGFILE GROUP 7('/usr/oracle/app/oradata/orcl/stbyredolog7a.log') SIZE  50 M; Database altered.

查看结果:

Primary>select * from v$logfile; GROUP# STATUS TYPE MEMBER IS_REC ------ ---------- ---------- -------------------------------------------------- ------
     3          ONLINE     /usr/oracle/app/oradata/orcl/redo03.log NO 2          ONLINE     /usr/oracle/app/oradata/orcl/redo02.log NO 1          ONLINE     /usr/oracle/app/oradata/orcl/redo01.log NO 4          STANDBY    /usr/oracle/app/oradata/orcl/stbyredolog4a.log NO 5          STANDBY    /usr/oracle/app/oradata/orcl/stbyredolog5a.log NO 6          STANDBY    /usr/oracle/app/oradata/orcl/stbyredolog6a.log NO 7          STANDBY    /usr/oracle/app/oradata/orcl/stbyredolog7a.log NO 7 rows selected.

同理在standby端做相同的操作

StandBy>ALTER DATABASE ADD STANDBY   LOGFILE GROUP 4('/usr/oracle/app/oradata/orcl/stbyredolog4a.log') SIZE  50 M; Database altered. StandBy>ALTER DATABASE ADD STANDBY   LOGFILE GROUP 5('/usr/oracle/app/oradata/orcl/stbyredolog5a.log') SIZE  50 M; Database altered. StandBy>ALTER DATABASE ADD STANDBY   LOGFILE GROUP 6('/usr/oracle/app/oradata/orcl/stbyredolog6a.log') SIZE  50 M; Database altered. StandBy>ALTER DATABASE ADD STANDBY   LOGFILE GROUP 7('/usr/oracle/app/oradata/orcl/stbyredolog7a.log') SIZE  50 M; Database altered.
StandBy>select * from v$logfile; GROUP# STATUS TYPE MEMBER IS_REC ------ ---------- ---------- ---------------------------------------------------------------------------------------------------- ------
     3          ONLINE     /usr/oracle/app/flash_recovery_area/DB_STANDBY/onlinelog/o1_mf_3_c7np1p97_.log YES 2          ONLINE     /usr/oracle/app/flash_recovery_area/DB_STANDBY/onlinelog/o1_mf_2_c7np1osm_.log YES 1          ONLINE     /usr/oracle/app/flash_recovery_area/DB_STANDBY/onlinelog/o1_mf_1_c7np1od8_.log YES 4          STANDBY    /usr/oracle/app/oradata/orcl/stbyredolog4a.log NO 5          STANDBY    /usr/oracle/app/oradata/orcl/stbyredolog5a.log NO 6          STANDBY    /usr/oracle/app/oradata/orcl/stbyredolog6a.log NO 7          STANDBY    /usr/oracle/app/oradata/orcl/stbyredolog7a.log                              NO

 

更改primary和standby端的log_archive_dest_2、

Primary>show parameter log_archive_dest_2 NAME TYPE VALUE ------------------------------------ ---------- ------------------------------
log_archive_dest_2             string    SERVICE=tns_standby ARCH VALID _FOR=(ONLINE_LOGFILES,PRIMARY_ ROLE) DB_UNIQUE_NAME=db_standb y log_archive_dest_20 string log_archive_dest_21 string log_archive_dest_22 string log_archive_dest_23 string log_archive_dest_24 string log_archive_dest_25 string log_archive_dest_26 string log_archive_dest_27 string log_archive_dest_28 string log_archive_dest_29 string Primary>alter system set log_archive_dest_2='SERVICE=tns_standby LGWR VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=db_standby'; System altered. Primary>show parameter log_archive_dest_2 NAME TYPE VALUE ------------------------------------ ---------- ------------------------------
log_archive_dest_2             string    SERVICE=tns_standby LGWR VALID _FOR=(ONLINE_LOGFILES,PRIMARY_ ROLE) DB_UNIQUE_NAME=db_standb y log_archive_dest_20 string log_archive_dest_21 string log_archive_dest_22 string log_archive_dest_23 string log_archive_dest_24 string log_archive_dest_25 string log_archive_dest_26 string log_archive_dest_27 string log_archive_dest_28 string log_archive_dest_29 string Primary>

更改standby端的log_archive_dest_2

StandBy>alter system set log_archive_dest_2='SERVICE=tns_primary LGWR VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=db_primary';

启用实时StandBy端redo应用

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

验证:

首先在Primay端插入一条数据:

Primary>select * from scott.dept; DEPTNO DNAME LOC ---------- ---------------------------- --------------------------
    10 ACCOUNTING NEW YORK 20 RESEARCH DALLAS 30 SALES CHICAGO 40 OPERATIONS BOSTON 12 OPERATIONS OPERATIONS Primary>INSERT INTO "SCOTT"."DEPT" ("DEPTNO", "DNAME", "LOC") VALUES ('13', 'OPERATIONS', 'OPERATIONS'); 1 row created. Primary>commit; Commit complete.

standby端查看

StandBy>select * from scott.dept; DEPTNO DNAME LOC ---------- ---------------------------- --------------------------
    10 ACCOUNTING NEW YORK 20 RESEARCH DALLAS 30 SALES CHICAGO 40 OPERATIONS BOSTON 12 OPERATIONS OPERATIONS 13 OPERATIONS OPERATIONS 6 rows selected.

10、switchover

备库暂停 redo应用

StandBy>alter database recover managed standby database cancel; Database altered.

查询主库是否支持switchover操作

Primary> select switchover_status from v$database; SWITCHOVER_STATUS ----------------------------------------
TO STANDBY

查询备库是否支持switchover操作

StandBy> select switchover_status from v$database; SWITCHOVER_STATUS ----------------------------------------
NOT ALLOWED

not allowed是因为主库还未变切换为standby

switchover,primary切换为物理standby,切换后查看数据库角色、打开模式、

Primary>alter database commit to switchover to physical standby; Database altered. Primary>shutdown immediate; ORA-01507: database not mounted ORACLE instance shut down. Primary>startup ORACLE instance started. Total System Global Area 3290345472 bytes Fixed Size 2217832 bytes Variable Size 1795164312 bytes Database Buffers     1476395008 bytes Redo Buffers 16568320 bytes Database mounted. Database opened. Primary>select open_mode  from v$database; OPEN_MODE ----------------------------------------
READ ONLY

Primary>select database_role from v$database; DATABASE_ROLE --------------------------------
PHYSICAL STANDBY Primary>

物理standby切换为primary

StandBy>select switchover_status from v$database; SWITCHOVER_STATUS ----------------------------------------
TO PRIMARY StandBy> alter database commit to switchover to primary; Database altered. StandBy>alter database open; Database altered. StandBy>select open_mode from v$database; OPEN_MODE ----------------------------------------
READ WRITE StandBy>select database_role from v$database; DATABASE_ROLE --------------------------------
PRIMARY StandBy>

测试同上(略)

常用查询

 

1、查询进程的活动状态

select process,client_process,sequence#,status from v$managed_standby;

2、查询redo应用进度

select dest_name,archived_thread#,archived_seq#,applied_thread#,applied_seq#,db_unique_name from v$archive_dest_status where status ='VALID';

3、查询归档文件路径及创建信息

select name,creator,sequence#,applied,completion_time from v$archived_log;

4、查询归档历史

select first_time,first_change#,next_change#,sequence# from v$log_history; select thread#,sequence#,applied from v$archived_log;

5、参看数据库的基本信息

select database_role,db_unique_name,open_mode,protection_mode,protection_level,switchover_status from v$database;

6、查询redo应用及redo传输服务的活动状态

select database_role,db_unique_name,open_mode,protection_mode,protection_level,switchover_status from v$database;

7、检查应用模式

StandBy>select recovery_mode from v$archive_dest_status where dest_id=2; RECOVERY_MODE ----------------------------------------------
IDLE

取值

idle

managed:

managed real_time_apply:

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