azure云上 在线将oracle单实例扩展成oracle dataguard高可用集群的详细过程

<->环境准备

         线上单实例oracle11g（PD1），已经运行了一段时间，属于单点实例，按照云上一不小心发生的vm文件故障来看，这个很危险，所以需要做高可用。

 

所以今天在线上刚刚新装了oracle备库实例（PD2），现在需要在PD1和PD2上做一个dataguard用来高可用。PD1为master库，PD2为standby库。

 

PS：需要注意的是，在安装PD2的时候，备库PD2的各种目录路径都要保持和主库PD1一致。

 

1，确保主库状态

查看主库状态：

SQL> selectname,open_mode,database_role,log_mode,force_logging from v$database;

 

NAME         OPEN_MODE              DATABASE_ROLE        LOG_MODE     FOR

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

POWERDES READ WRITE            PRIMARY            ARCHIVELOG   YES

 

SQL>

 

 

#1 如果这里没有开启归档不是ARCHIVELOG，则手动设置归档，归档模式的设置：

1、shutdown abort；

2、alter database mount;

3、alter database archive log；

4、alter database open；

 

#2 如果这里不是YES是NO，则需要使用命令alter databaseforce logging;强制归档

 

SQL> show parameter name;

 

NAME                                        TYPE       VALUE

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

db_file_name_convert                   string

db_name                                 string     powerdes

db_unique_name                           string     powerdes

global_names                         boolean FALSE

instance_name                               string     powerdes

lock_name_space                 string

log_file_name_convert                 string

service_names                                string     powerdes

SQL>

 

确保数据库的归档模式：

SQL> archive log list;

Database log mode        Archive Mode

Automatic archival         Enabled

Archive destination       USE_DB_RECOVERY_FILE_DEST

Oldest online log sequence     4510

Next log sequence to archive   4512

Current log sequence             4512

SQL>

 

 

2，配置监听、口令，传输到备库

 

2.1 listenor.ora文件配置静态监听

配置前为两台数据库配置静态监听（因dataguard需要设置db_unique_name，环境配置好后会出现两个不同的instance，如果是动态监听，会默认的监听到db_unique_name的监听上去，导致原来的db_name所在的实例无法连接，因此需要配置好静态监听）

 

主库监听：

[oracle@plys1 admin]$ more listener.ora # listener.ora Network Configuration File: /oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora # Generated by Oracle configuration tools. # 配置静态监听 SID_LIST_LISTENER =   (SID_LIST =     (SID_DESC =       (SID_NAME = PLSExtProc)       (ORACLE_HOME = /oracle/app/oracle/product/11.2.0/dbhome_1)       (PROGRAM = extproc)     )     (SID_DESC =       (SID_NAME = powerdes) # 这里如果GLOBAL_DBNAME和SID_NAME是一样的话，只需要设置下SID_NAME就可以了，否则2个都要设置上。       (ORACLE_HOME = /oracle/app/oracle/product/11.2.0/dbhome_1)     )   )     # 本机监听 LISTENER =   (DESCRIPTION =     (ADDRESS = (PROTOCOL = TCP)(HOST = 192.161.3.11)(PORT = 1521))   )   ADR_BASE_LISTENER = /oracle/app/oracle   [oracle@plys1 admin]$

 

从库监听：

[oracle@plys02 admin]$ more listener.ora # listener.ora Network Configuration File: /oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora # Generated by Oracle configuration tools. # 配置静态监听 SID_LIST_LISTENER =   (SID_LIST =     (SID_DESC =       (SID_NAME = PLSExtProc)       (ORACLE_HOME = /oracle/app/oracle/product/11.2.0/dbhome_1)       (PROGRAM = extproc)     )     (SID_DESC =# 这里如果GLOBAL_DBNAME和SID_NAME是一样的话，只需要设置下SID_NAME就可以了，否则2个都要设置上。       (GLOBAL_DBNAME=pdunq_dg)       (ORACLE_HOME = /oracle/app/oracle/product/11.2.0/dbhome_1)       (SID_NAME = powerdesdg2)     )   )     LISTENER =   (DESCRIPTION_LIST =     (DESCRIPTION =       (ADDRESS = (PROTOCOL = TCP)(HOST = 192.161.3.13)(PORT = 1521))     )   )   ADR_BASE_LISTENER = /oracle/app/oracle   [oracle@plys02 admin]$

 

2.2 tnsnames.ora配置复制服务

修改主库的tnsnames.ora配置：

[oracle@plys1 admin]$ vim tnsnames.ora   # tnsnames.ora Network Configuration File: /oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/tnsnames.ora # Generated by Oracle configuration tools.   POWERDES =   (DESCRIPTION =     (ADDRESS = (PROTOCOL = TCP)(HOST = 192.161.3.11)(PORT = 1521))     (CONNECT_DATA =       (SERVER = DEDICATED)       (SERVICE_NAME = powerdes)     )   )   PD1 =   (DESCRIPTION =     (ADDRESS = (PROTOCOL = TCP)(HOST = 192.161.3.11)(PORT = 1521))     (CONNECT_DATA =       (SERVER = DEDICATED)       (SERVICE_NAME = pdunq)     )   )   PD2 =   (DESCRIPTION =     (ADDRESS = (PROTOCOL = TCP)(HOST = 192.161.3.13)(PORT = 1521))     (CONNECT_DATA =       (SERVER = DEDICATED)       (SERVICE_NAME = powerdes)     )   )

 

 

传输到备库：

[oracle@plys1 admin]$ scp tnsnames.ora 192.161.3.13:/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/ The authenticity of host '192.161.3.13 (192.161.3.13)' can't be established. RSA key fingerprint is 67:0f:7d:69:e8:ed:9c:7e:b4:9d:36:35:2f:68:a2:d9. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '192.161.3.13' (RSA) to the list of known hosts. [email protected]'s password: tnsnames.ora                                                                                                                                                                                                                                100%  697     0.7KB/s   00:00    [oracle@plys1 admin]$

 

 

2.3传输口令文件到备库

# 在主库设定口令文件：

[oracle@plys01dbs]$ orapwd file=orapw$ORACLE_SID password=313pd-ys2037 entries=10 force=yignorecase=Y

[oracle@plys01dbs]$

 

# 传输到备库

[oracle@plys1 dbs]$ scp orapwpowerdes 192.161.3.13:$ORACLE_HOME/dbs

[email protected]'s password:

orapwpowerdes                                                                                                                                               100% 1536     1.5KB/s   00:00   

[oracle@plys1 dbs]$

 

# 覆盖备库口令文件

[oracle@plys02 admin]$ cd $ORACLE_HOME/dbs

[oracle@plys02 admin]$ cp orapwpowerdes orapwpowerdesdg2

[oracle@plys02 dbs]$ ll ora*

-rw-r----- 1 oracle oinstall 1536 May 2314:37 orapwpowerdes

-rw-r----- 1 oracle oinstall 1536 May 2314:22 orapwpowerdesdg2

[oracle@plys02 dbs]$

 

 

 

3，在线设置主库参数

# 设置参数 ALTER SYSTEM SET LOG_ARCHIVE_CONFIG='DG_CONFIG=(powerdes,pdunq_dg)';                                                            ALTER SYSTEM SET LOG_ARCHIVE_DEST_1='LOCATION=/oracle/app/oracle/flash_recovery_area/archivelog LGWR VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=powerdes';  ALTER SYSTEM SET LOG_ARCHIVE_DEST_2='SERVICE=PD2 ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=pdunq_dg';     ALTER SYSTEM SET LOG_ARCHIVE_DEST_STATE_1='ENABLE';                                                                      ALTER SYSTEM SET LOG_ARCHIVE_DEST_STATE_2='DEFER';                                                                                                                                              ALTER SYSTEM SET STANDBY_FILE_MANAGEMENT='AUTO';            ALTER SYSTEM SET FAL_SERVER=pdung;      ALTER SYSTEM SET DB_FILE_NAME_CONVERT='/home/oradata/powerdes','/home/oradata/powerdes' scope=spfile; ALTER SYSTEM SET LOG_FILE_NAME_CONVERT='/home/oradata/powerdes','/home/oradata/powerdes' scope=spfile;   # 写入启动参数文件 SQL> create pfile from spfile;   File created.   SQL>

 

 

4，把主库最近的备份传输到备库同样的目录之上

[oracle@plys1 data]$  scp -r 2016-05-20 192.161.3.13:/backupdisk/backup/data/ [email protected]'s password: arch_POWERDES_20160520_6050.bak                                                                                                                              100%   24MB  12.2MB/s   00:02    full_POWERDES_20160520_6049.bak                                                                                                                              100%   10GB  10.1MB/s   17:36    rman_backup.log                                                                                                                                              100%   60KB  60.1KB/s   00:00    arch_POWERDES_20160520_6048.bak                                                                                                                              100%   26MB  13.2MB/s   00:02    [oracle@plys1 data]$

 

 

 

 

5，修改备库参数并启动到nomount

修改备库启动参数文件：

cd $ORACLE_HOME/dbs vim initpowerdesdg2.pra   #DG CONFIG *.log_archive_config='dg_config=(powerdes,pdunq_dg)' *.log_archive_dest_1='LOCATION=/oracle/app/oracle/flash_recovery_area/archivelog LGWR VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=pdunq_dg' *.log_archive_dest_2='SERVICE=PD1 ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=powerdes *.standby_file_management='AUTO' *.log_archive_dest_state_1=enable *.log_archive_dest_state_2=enable *.fal_server=pdunq_dg *.db_unique_name=pdunq_dg

 

PS:将*.log_archive_dest_2=后面的DB_UNIQUE_NAME改成primary的DB_UNIQUE_NAME值改为powerdes，这样在做switchover的时候，新的primary能通过这个将redo日志传到新的standby上面去。
log_archive_dest_N 目的是告诉数据库，把归档放到那里去可选项，首先是本地，然后考虑远程的从库，所以，假设A是主库，B是从库，切换之后B是主库，A是从库，所以，log_archive_dest_N需要设置为对方

 

把备库启动到nomount：

SQL> startup nomount; ORACLE instance started.   Total System Global Area 1.1825E+10 bytes Fixed Size              2217024 bytes Variable Size              6039800768 bytes Database Buffers    5771362304 bytes Redo Buffers                11849728 bytes SQL>

 

6，在master库PD1上使用auxiliary启动连接

[oracle@plys1 dbs]$  rman target sys/313pd_ys2016@PD1 auxiliarysys/313pd_ys2016@PD2

 

Recovery Manager: Release 11.2.0.1.0 -Production on Mon May 23 15:26:17 2016

 

Copyright (c) 1982, 2009, Oracle and/or itsaffiliates.  All rights reserved.

 

connected to target database: POWERDES(DBID=3391761643)

connected to auxiliary database: POWERDES(not mounted)

 

RMAN>

 

 

7，使用duplicate target 进行数据复制

命令：duplicatetarget database for standby from active database nofilenamecheck;

开始同步，这里消耗时间比较长，因为需要写入数据文件到备库上面：

RMAN> duplicate target database for standby from active database nofilenamecheck;   Starting Duplicate Db at 23-MAY-16 using target database control file instead of recovery catalog allocated channel: ORA_AUX_DISK_1 channel ORA_AUX_DISK_1: SID=1885 device type=DISK   contents of Memory Script: {    backup as copy reuse    targetfile  '/oracle/app/oracle/product/11.2.0/dbhome_1/dbs/orapwpowerdes' auxiliary format  '/oracle/app/oracle/product/11.2.0/dbhome_1/dbs/orapwpowerdesdg2'   ; } executing Memory Script   Starting backup at 23-MAY-16 allocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=4245 device type=DISK Finished backup at 23-MAY-16   contents of Memory Script: {    backup as copy current controlfile for standby auxiliary format  '/oracle/app/oracle/oradata/powerdes/control01.ctl';    restore clone controlfile to  '/oracle/app/oracle/flash_recovery_area/powerdes/control02.ctl' from  '/oracle/app/oracle/oradata/powerdes/control01.ctl'; } executing Memory Script   Starting backup at 23-MAY-16 using channel ORA_DISK_1 channel ORA_DISK_1: starting datafile copy copying standby control file output file name=/oracle/app/oracle/product/11.2.0/dbhome_1/dbs/snapcf_powerdes.f tag=TAG20160523T160425 RECID=5 STAMP=912614666 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:01 Finished backup at 23-MAY-16   Starting restore at 23-MAY-16 using channel ORA_AUX_DISK_1   channel ORA_AUX_DISK_1: copied control file copy Finished restore at 23-MAY-16   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  "/home/oradata/powerdes/temp01.dbf";    set newname for tempfile  2 to  "/home/oradata/powerdes/temp02.dbf";    set newname for tempfile  3 to  "/home/oradata/powerdes/temp03.dbf";    set newname for tempfile  4 to  "/home/oradata/powerdes/temp04.dbf";    switch clone tempfile all;    set newname for datafile  1 to  "/home/oradata/powerdes/system01.dbf";    set newname for datafile  2 to  "/home/oradata/powerdes/sysaux01.dbf";    set newname for datafile  3 to  "/home/oradata/powerdes/undotbs01.dbf";    set newname for datafile  4 to  "/home/oradata/powerdes/users01.dbf";    set newname for datafile  5 to  "/home/oradata/powerdes/powerdesk01.dbf";    set newname for datafile  6 to  "/home/oradata/powerdes/plas01.dbf";    set newname for datafile  7 to  "/home/oradata/powerdes/pl01.dbf";    set newname for datafile  8 to  "/home/oradata/powerdes/help01.dbf";    set newname for datafile  9 to  "/home/oradata/powerdes/adobelc01.dbf";    set newname for datafile  10 to  "/home/oradata/powerdes/sms01.dbf";    set newname for datafile  11 to  "/home/oradata/powerdes/plcrm01.dbf";    set newname for datafile  12 to  "/home/oradata/powerdes/powerdesk02.dbf";    set newname for datafile  13 to  "/home/oradata/powerdes/datagm01.dbf";    backup as copy reuse    datafile  1 auxiliary format  "/home/oradata/powerdes/system01.dbf"   datafile  2 auxiliary format  "/home/oradata/powerdes/sysaux01.dbf"   datafile  3 auxiliary format  "/home/oradata/powerdes/undotbs01.dbf"   datafile  4 auxiliary format  "/home/oradata/powerdes/users01.dbf"   datafile  5 auxiliary format  "/home/oradata/powerdes/powerdesk01.dbf"   datafile  6 auxiliary format  "/home/oradata/powerdes/plas01.dbf"   datafile  7 auxiliary format  "/home/oradata/powerdes/pl01.dbf"   datafile  8 auxiliary format  "/home/oradata/powerdes/help01.dbf"   datafile  9 auxiliary format  "/home/oradata/powerdes/adobelc01.dbf"   datafile  10 auxiliary format  "/home/oradata/powerdes/sms01.dbf"   datafile  11 auxiliary format  "/home/oradata/powerdes/plcrm01.dbf"   datafile  12 auxiliary format  "/home/oradata/powerdes/powerdesk02.dbf"   datafile  13 auxiliary format  "/home/oradata/powerdes/datagm01.dbf"   ;    sql 'alter system archive log current'; } executing Memory Script   executing command: SET NEWNAME   executing command: SET NEWNAME   executing command: SET NEWNAME   executing command: SET NEWNAME   renamed tempfile 1 to /home/oradata/powerdes/temp01.dbf in control file renamed tempfile 2 to /home/oradata/powerdes/temp02.dbf in control file renamed tempfile 3 to /home/oradata/powerdes/temp03.dbf in control file renamed tempfile 4 to /home/oradata/powerdes/temp04.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   executing command: SET NEWNAME   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 23-MAY-16 using channel ORA_DISK_1 channel ORA_DISK_1: starting datafile copy input datafile file number=00005 name=/home/oradata/powerdes/powerdesk01.dbf output file name=/home/oradata/powerdes/powerdesk01.dbf tag=TAG20160523T160433 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:08:35 channel ORA_DISK_1: starting datafile copy input datafile file number=00006 name=/home/oradata/powerdes/plas01.dbf output file name=/home/oradata/powerdes/plas01.dbf tag=TAG20160523T160433 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:02:15 channel ORA_DISK_1: starting datafile copy input datafile file number=00012 name=/home/oradata/powerdes/powerdesk02.dbf output file name=/home/oradata/powerdes/powerdesk02.dbf tag=TAG20160523T160433 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:01:55 channel ORA_DISK_1: starting datafile copy input datafile file number=00003 name=/home/oradata/powerdes/undotbs01.dbf output file name=/home/oradata/powerdes/undotbs01.dbf tag=TAG20160523T160433 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:01:55 channel ORA_DISK_1: starting datafile copy input datafile file number=00002 name=/home/oradata/powerdes/sysaux01.dbf output file name=/home/oradata/powerdes/sysaux01.dbf tag=TAG20160523T160433 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:01:25 channel ORA_DISK_1: starting datafile copy input datafile file number=00001 name=/home/oradata/powerdes/system01.dbf output file name=/home/oradata/powerdes/system01.dbf tag=TAG20160523T160433 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:01:15 channel ORA_DISK_1: starting datafile copy input datafile file number=00011 name=/home/oradata/powerdes/plcrm01.dbf output file name=/home/oradata/powerdes/plcrm01.dbf tag=TAG20160523T160433 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:45 channel ORA_DISK_1: starting datafile copy input datafile file number=00007 name=/home/oradata/powerdes/pl01.dbf output file name=/home/oradata/powerdes/pl01.dbf tag=TAG20160523T160433 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:45 channel ORA_DISK_1: starting datafile copy input datafile file number=00004 name=/home/oradata/powerdes/users01.dbf output file name=/home/oradata/powerdes/users01.dbf tag=TAG20160523T160433 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:15 channel ORA_DISK_1: starting datafile copy input datafile file number=00010 name=/home/oradata/powerdes/sms01.dbf output file name=/home/oradata/powerdes/sms01.dbf tag=TAG20160523T160433 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:07 channel ORA_DISK_1: starting datafile copy input datafile file number=00008 name=/home/oradata/powerdes/help01.dbf output file name=/home/oradata/powerdes/help01.dbf tag=TAG20160523T160433 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:07 channel ORA_DISK_1: starting datafile copy input datafile file number=00009 name=/home/oradata/powerdes/adobelc01.dbf output file name=/home/oradata/powerdes/adobelc01.dbf tag=TAG20160523T160433 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:07 channel ORA_DISK_1: starting datafile copy input datafile file number=00013 name=/home/oradata/powerdes/datagm01.dbf output file name=/home/oradata/powerdes/datagm01.dbf tag=TAG20160523T160433 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03 Finished backup at 23-MAY-16   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=5 STAMP=912615845 file name=/home/oradata/powerdes/system01.dbf datafile 2 switched to datafile copy input datafile copy RECID=6 STAMP=912615845 file name=/home/oradata/powerdes/sysaux01.dbf datafile 3 switched to datafile copy input datafile copy RECID=7 STAMP=912615845 file name=/home/oradata/powerdes/undotbs01.dbf datafile 4 switched to datafile copy input datafile copy RECID=8 STAMP=912615845 file name=/home/oradata/powerdes/users01.dbf datafile 5 switched to datafile copy input datafile copy RECID=9 STAMP=912615845 file name=/home/oradata/powerdes/powerdesk01.dbf datafile 6 switched to datafile copy input datafile copy RECID=10 STAMP=912615845 file name=/home/oradata/powerdes/plas01.dbf datafile 7 switched to datafile copy input datafile copy RECID=11 STAMP=912615845 file name=/home/oradata/powerdes/pl01.dbf datafile 8 switched to datafile copy input datafile copy RECID=12 STAMP=912615845 file name=/home/oradata/powerdes/help01.dbf datafile 9 switched to datafile copy input datafile copy RECID=13 STAMP=912615845 file name=/home/oradata/powerdes/adobelc01.dbf datafile 10 switched to datafile copy input datafile copy RECID=14 STAMP=912615845 file name=/home/oradata/powerdes/sms01.dbf datafile 11 switched to datafile copy input datafile copy RECID=15 STAMP=912615845 file name=/home/oradata/powerdes/plcrm01.dbf datafile 12 switched to datafile copy input datafile copy RECID=16 STAMP=912615845 file name=/home/oradata/powerdes/powerdesk02.dbf datafile 13 switched to datafile copy input datafile copy RECID=17 STAMP=912615845 file name=/home/oradata/powerdes/datagm01.dbf Finished Duplicate Db at 23-MAY-16   RMAN>

 

 

8，将主库的LOG_ARCHIVE_DEST_STATE_2设置为ENABLE

# alter system setlog_archive_dest_state_2='enable';

SQL> alter system setlog_archive_dest_state_2='enable';

 

System altered.

 

SQL>

 

 

9，在主库备库上添加standby文件

# 在主库备库上执行： alter database add standby logfile group 4 ('/home/oradata/powerdes/redo_dg_021.log') size 200M; alter database add standby logfile group 5 ('/home/oradata/powerdes/redo_dg_022.log') size 200M; alter database add standby logfile group 6 ('/home/oradata/powerdes/redo_dg_023.log') size 200M;   # 在主库备库上查看： SQL> select member from v$logfile;   MEMBER -------------------------------------------------------------------------------- /home/oradata/powerdes/redo03.log /home/oradata/powerdes/redo02.log /home/oradata/powerdes/redo01.log /home/oradata/powerdes/redo_dg_021.log /home/oradata/powerdes/redo_dg_022.log /home/oradata/powerdes/redo_dg_023.log   6 rows selected.   SQL> SQL> SELECT GROUP#, BYTES FROM V$STANDBY_LOG;       GROUP#  BYTES ---------- ----------           4   52428800           5   52428800           6   52428800   SQL>

 

 

 

10，准备开启备库redo应用

启动standby的redo应用的两种方式：

（1）默认的物理DG启动应用后，在主库arch日志被完整写入后才会开始应用该arch log

SQL> alter database recover managedstandby database disconnect from session;

 

（2）可以添加current logfile参数，使得应用当前正在读写，还没有完成归档的日志

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

 

（3）开启多个并行度提高应用效率

SQL> alter database recover managedstandby database parallel 8 using current logfile disconnect from session;

 

（4）关闭REDO应用

SQL> alter database recover managedstandby database using current logfile disconnect from session nodelay;

 

（5）取消延时应用

SQL> alter database recover managedstandby database cancel;

 

我们这里采用第二种，可以实时在备库拿到最新记录数据：

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

 

 

 

11，打开备库

# 在mount状态应用

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

 

Database altered.

# 取消延时应用

SQL> alter database recover managedstandby database cancel;

 

Database altered.

# 打开库

SQL> alter database open;

Database altered.

# 再次应用redo，添加current logfile参数，使得应用当前正在读写，还没有完成归档的日志

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

Database altered.

 

SQL>

 

# 查看备库状态

SQL> selectgroup#,thread#,sequence#,archived,status from v$standby_log;

 

   GROUP#    THREAD#  SEQUENCE# ARC STATUS

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

          4         1           4729 YES ACTIVE

          5         0              0 YES UNASSIGNED

          6         0              0 YES UNASSIGNED

 

SQL>

 

# 去检查主库备库的当前归档日志, archive log list;

SQL> archive log list; Database log mode        Archive Mode Automatic archival         Enabled Archive destination        /oracle/app/oracle/flash_recovery_area/archivelog Oldest online log sequence     4727 Next log sequence to archive   4729 Current log sequence             4729 SQL>

 

 

# 去查下备库standby是否已经完全应用了：

SQL> select sequence#,applied from v$archived_log order by sequence# asc;  SEQUENCE# APPLIED ---------- ---------       4722 YES       4723 YES       4724 YES       4725 YES       4726 YES       4727 YES       4728 YES 7 rows selected. SQL>

 

 

OK，发现传输过来的日志已经被应用了，主库备库保持一致，至此在线上由单实例扩展而成dataguard高可用就成功做完了。

 

12，问题记录redo log路径不一致

备库上是：

SQL> select member from v$logfile;   MEMBER -------------------------------------------------------------------------------- /oracle/app/oracle/flash_recovery_area/PDUNQ_DG/onlinelog/o1_mf_3_cn5hk8b1_.log /oracle/app/oracle/flash_recovery_area/PDUNQ_DG/onlinelog/o1_mf_2_cn5hk7cl_.log /oracle/app/oracle/flash_recovery_area/PDUNQ_DG/onlinelog/o1_mf_1_cn5hk6db_.log

 

 

 

13，问题记录ORA-16057

Errors in file/oracle/app/oracle/diag/rdbms/powerdes/powerdes/trace/powerdes_arc1_2626.trc:

ORA-16057: server not in Data Guardconfiguration

PING[ARC1]: Heartbeat failed to connect tostandby 'PD2'. Error is 16057.

 

在主库上查看db_unique_name：

SQL> show parameter db_unique_name;

 

NAME                                        TYPE       VALUE

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

db_unique_name                           string     powerdes

SQL>

Ok，重新设置LOG_ARCHIVE_CONFIG，设置前面的为powerdes，

ALTER SYSTEM SETLOG_ARCHIVE_CONFIG='DG_CONFIG=(powerdes,pdunq_dg)';

 

参考：http://czmmiao.iteye.com/blog/1311070

 

 

看到alert日志还在报新的错误：ORA-16057: server not in Data Guard configuration

 

Errors in file/oracle/app/oracle/diag/rdbms/powerdes/powerdes/trace/powerdes_arc1_2626.trc:

ORA-16057: server not in Data Guardconfiguration

PING[ARC1]: Heartbeat failed to connect tostandby 'PD2'. Error is 16057.

Mon May 23 18:43:06 2016

 

解决方法：

在primary  主库上：重启下到备库的连接就好了：

ALTER SYSTEM SETlog_archive_dest_state_2='DEFER' SCOPE=BOTH;

ALTER SYSTEM SETlog_archive_dest_state_2='ENABLE' SCOPE=BOTH;

 

PS：这个是oracle 的一个bug

 

14，问题记录RMAN-04006: error from auxiliary database

在备库启动到nomount后用tns测试连接时发现数无法连接，报错信息如下：

[oracle@plys1 admin]$  rman target sys/313pd_ys2016@PD1 auxiliarysys/313pd_ys2016@PD2

 

Recovery Manager: Release 11.2.0.1.0 -Production on Mon May 23 14:32:38 2016

 

Copyright (c) 1982, 2009, Oracle and/or itsaffiliates.  All rights reserved.

 

connected to target database: POWERDES(DBID=3391761643)

RMAN-00571:===========================================================

RMAN-00569: =============== ERROR MESSAGESTACK FOLLOWS ===============

RMAN-00571: ===========================================================

RMAN-00554: initialization of internalrecovery manager package failed

RMAN-04006: error from auxiliary database:ORA-01031: insufficient privileges

[oracle@plys1 admin]$

 

原因是11g之后动态监听不支持在nomount状态下远程的tns访问，自己的服务器中配置的监听一直是动态的，然后需要设置好静态注册，在listenr.ora文件里面。之后在登录连接就正常了。

 

参考：http://blog.itpub.net/12679300/viewspace-1127775/

参考文章、SID各种NAME的名称：http://blog.itpub.net/7590112/viewspace-1064826/

参考文章、静态注册动态注册：http://blog.itpub.net/7590112/viewspace-1064826/