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基于rman 全备+归档在线搭建DG

發布時間：2025/6/15 编程问答 17 豆豆

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主從兩臺主機hosts配置
192.168.1.197 oradb1（從）
192.168.1.198 oradb2(主）
二:搭建數據庫
主庫的操作：
1.確認主庫參數
SQL> select name,open_mode,database_role,log_mode,force_logging from v$database;

NAME OPEN_MODE DATABASE_ROLE LOG_MODE FOR

OREO READ WRITE PRIMARY ARCHIVELOG YES

SQL>show parameter name

NAME TYPE VALUE

db_file_name_convert string
db_name string oracle9i
db_unique_name string oradb2
global_names boolean FALSE
instance_name string oradb2
lock_name_space string
log_file_name_convert string /data/ora11g/, /data/ora11g/
service_names string oradb2
2.設置數據庫的歸檔模式
SQL>archive log list;
Database log mode Archive Mode
Automatic archival Enabled
Archive destination /data/ora11g/oradata/oracle9i/archive/
Oldest online log sequence 74
Next log sequence to archive 76
Current log sequence 76
如果歸檔和force logging未開啟執行下面操作
歸檔模式的設置：
1、shutdown immediate；
2、alter database mount;
3、alter database archive log；
4、alter database open；
3.開啟force logging
SQL> alter database force logging;
SQL> select FORCE_LOGGING from v$database;

FORCE_

YES
SQL> select name,DB_UNIQUE_NAME,database_role,log_mode,force_logging from v$database;
NAME DB_UNIQUE_NAME DATABASE_ROLE LOG_MODE FOR

ORACLE9I oradb2 PRIMARY ARCHIVELOG YES

4.配置監聽
[root@oradb2 rman]# vim /data/ora11g/product/11.2.0/db_1/network/admin/listener.ora
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME =oradb2)
(ORACLE_HOME = /data/ora11g/product/11.2.0/db_1)
(SID_NAME = oradb2)
)
)

LISTENER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.198)(PORT = 1521))
)

ADR_BASE_LISTENER = /data/ora11g

SUBSCRIBE_FOR_NODE_DOWN_EVENT_LISTENER = OFF
INBOUND_CONNECT_TIMEOUT_LISTENER = 5
DIAG_ADR_ENABLED_LISTENER = OFF

#TRACE_TIMESTAMP_LISTENER=true
#TRACE_LEVEL_LISTENER=16

5.配置主庫的TNSNAMES.ORA和密碼文件并傳到備庫
[root@oradb2 rman]# vim /data/ora11g/product/11.2.0/db_1/network/admin/tnsnames.ora

tnsnames.ora Network Configuration File: /u01/app/oracle/product/OraDb11g_home1/network/admin/tnsnames.ora

Generated by Oracle configuration tools.

ora11g_1.197 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.197)(PORT = 1521))
)
(CONNECT_DATA =
(SID = oradb2)
(SERVER = DEDICATED)
)
)
ora11g_1.198 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.198)(PORT = 1521))
)
(CONNECT_DATA =
(SID = oradb2)
(SERVER = DEDICATED)
)
)
密碼文件在
/data/ora11g/product/11.2.0/db_1/dbs/orapworadb2
如果忘記密碼可以修改密碼:
orapwd file='/data/ora11g/product/11.2.0/db_1/dbs/orapworadb2' password=xxxxx
通過ftp，scp等傳輸監聽文件和密碼到備庫；
6.修改主庫參數
個別參數說明:
db_unique_name='主庫唯一名'
log_archive_config='dg_config=(主庫唯一名,從庫唯一名)'
log_archive_dest_1='location=本地歸檔路徑 VALID_FOR=(ONLINE_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=主庫唯一名' --就是說不管你是主庫還是備庫，都把你的online放到“本地歸檔路徑”里面去
log_archive_dest_2='service=去從庫的TNS valid_for=(online_logfiles,primary_role) db_unique_name=從庫唯一名' --當角色是主庫的時候，使用"去從庫的tns“發送online_redolog
log_archive_dest_state_1=enable
log_archive_dest_state_2=enable
standby_file_management='auto'
主庫參數在線修改:(主要用于在線搭建，主庫不停機;如果可以停機,先create pfile from spfile生成/data/ora11g/product/11.2.0/db_1/dbs/initoradb2.ora文件直接修改，然后使用pfile啟動，也可以如下 CREATE SPFILE FROM PFILE;
，STARTUP OPEN啟動 )
ALTER SYSTEM SET LOG_ARCHIVE_CONFIG='DG_CONFIG=(oradb2,oradb1)';
ALTER SYSTEM SET LOG_ARCHIVE_DEST_1='LOCATION=/data/ora11g/oradata/oracle9i/archive/ LGWR VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=oradb2';
ALTER SYSTEM SET LOG_ARCHIVE_DEST_2='SERVICE=ora11g_1.197 ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=oradb1';
ALTER SYSTEM SET LOG_ARCHIVE_DEST_STATE_1='ENABLE';
ALTER SYSTEM SET LOG_ARCHIVE_DEST_STATE_2='DEFER';#配置從庫后再開啟
ALTER SYSTEM SET STANDBY_FILE_MANAGEMENT='AUTO';
ALTER SYSTEM SET FAL_SERVER=ora11g_1.197;
ALTER SYSTEM SET FAL_CLIENT=ora11g_1.198;
ALTER SYSTEM SET DB_FILE_NAME_CONVERT='/data/ora11g/oradata','/data/ora11g/oradata' scope=spfile;
ALTER SYSTEM SET LOG_FILE_NAME_CONVERT='/data/ora11g','/data/ora11g' scope=spfile;
7.生成主庫的initoradb2.ora，傳到從庫做修改
create pfile from spfile;--這里創建pfile是為了做一些主庫參數的配置，并且還得拷貝到備庫再次修改成備庫的配置
oracle9i.db_cache_size=16374562816
oracle9i.oracle_base='/data/ora11g'#ORACLE_BASE set from environment
oradb2.oracle_base='/data/ora11g'#ORACLE_BASE set from environment
oracle9i.shared_pool_size=1342177280
.audit_file_dest='/data/ora11g/admin/oracle9i/adump'
.audit_trail='db'
.compatible='11.2.0.0.0'
.control_files='/data/ora11g/oradata/oracle9i/control01.ctl','/data/ora11g/oradata/oracle9i/control02.ctl'
.db_block_size=16384
.db_cache_size=16777216000
.db_domain=''
.db_file_name_convert='/data/ora11g/oradata','/data/ora11g/oradata'
.db_flashback_retention_target=60
.db_name='oracle9i'
.db_recovery_file_dest='/data/ora11g/flashback'
.db_recovery_file_dest_size=4294967296
.db_unique_name='oradb2'
.diagnostic_dest='/data/ora11g'
.dispatchers='(PROTOCOL=TCP) (SERVICE=oracle9iXDB)'
.fal_client='ora11g_1.198'
.fal_server='ora11g_1.197'
.java_pool_size=104857600
.large_pool_size=209715200
.log_archive_config='DG_CONFIG=(oradb2,oradb1)'
.log_archive_dest_1='LOCATION=/data/ora11g/oradata/oracle9i/archive/ LGWR VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=oradb2'
.log_archive_dest_2='SERVICE=ora11g_1.197 ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=oradb1'
.log_archive_dest_state_1='ENABLE'
.log_archive_dest_state_2='DEFER'
.log_archive_max_processes=10
.log_file_name_convert='/data/ora11g','/data/ora11g'
.open_cursors=1000
.pga_aggregate_target=2097152000
.processes=1000
.remote_login_passwordfile='EXCLUSIVE'
.sessions=885
.sga_max_size=23068672000
.shared_pool_size=1048576000
.standby_file_management='AUTO'
*.undo_tablespace='UNDOTBS1'
8.備份數據和控制文件,由于主庫數據量太大，這里我采用腳本在后臺備份，建議一次全備+備份每天歸檔日志，然后傳輸到從庫上
#/bin/bash
ORACLE_HOME=/data/ora11g/product/11.2.0/db_1
ORACLE_SID=oradb2
RMAN_LOG_FILE=/data/backup/logs/fullusedbbackupdate +%y%m%d.log
export ORACLE_HOME
export ORACLE_SID
export RMAN_LOG_FILE
PATH=$ORACLE_HOME/bin:$PATH
export PATH
export NLS_DATE_FORMAT='YYYY-MM-DD HH24:MI:SS'
echo >> $RMAN_LOG_FILE
echo ==== started on date ==== >> $RMAN_LOG_FILE
echo >> $RMAN_LOG_FILE
CMD_STR="
rman target / msglog $RMAN_LOG_FILE append <<EOF
report obsolete;
delete noprompt obsolete;

run
{
allocate channel c1 device type disk format '/data/backup/rman/%U-%d-%T.full';
allocate channel c2 device type disk format '/data/backup/rman/%U-%d-%T.full';
BACKUP AS COMPRESSED BACKUPSET
SKIP INACCESSIBLE FILESPERSET 10 DATABASE PLUS ARCHIVELOG FILESPERSET 20;
DELETE ALL INPUT;
backup current controlfile for standby format='/data/backup/rman/control_%U';
release channel c1;
release channel c2;
}
crosscheck backup;
delete noprompt expired backup;
report obsolete;
delete noprompt obsolete;
EOF
"

bash -c "$CMD_STR" >> $RMAN_LOG_FILE

RSTAT=$?

if [ "$RSTAT" = "0" ]
then
LOGMSG="ended successfully"
else
LOGMSG="ended in error"
fi
echo >> $RMAN_LOG_FILE
echo ==== $LOGMSG on date ==== >> $RMAN_LOG_FILE
echo >> $RMAN_LOG_FILE
二:從庫操作
1，檢查配置(修改db_unique_name
alter system set db_unique_name='oradb1' scope=spfile;重啟)
SQL>show parameter name
NAME TYPE VALUE

db_file_name_convert string /data/ora11g/oradata, /data/or
a11g/oradata
db_name string oracle9i
db_unique_name string oradb1
global_names boolean FALSE
instance_name string oradb2
lock_name_space string
log_file_name_convert string /data/ora11g, /data/ora11g
service_names string oradb1
2.修改傳輸過來的initoradb2.ora
添加如下參數，需要替換
db_name='需要同主庫一樣'
db_unique_name='從庫唯一名'
log_archive_config='dg_config=(主庫唯一名,從庫唯一名)'
log_archive_dest_1='location=本地歸檔路徑 valid_for=(all_logfiles,all_roles) db_unique_name=從庫唯一名' ## 這里的這個all_logfiles主要是為后面最大可用模式做準備
log_archive_dest_state_1=enable
standby_file_management='auto'
log_file_name_convert='主庫中日志文件的路徑','從庫上日志文件的路徑（自己定義）' ## 這個是用在rman復制時需要的，設置了這個就不需要做set new..
db_file_name_convert='主庫中數據文件的路徑','從庫上數據文件的路徑（自己定義）'

cp initoradb2.ora initoradb1.ora
vim initoradb1.ora
oracle9i.db_cache_size=16374562816
oracle9i.oracle_base='/data/ora11g'#ORACLE_BASE set from environment
oradb2.oracle_base='/data/ora11g'#ORACLE_BASE set from environment
oracle9i.shared_pool_size=1342177280
.audit_file_dest='/data/ora11g/admin/oracle9i/adump'
.audit_trail='db'
.compatible='11.2.0.0.0'
.control_files='/data/ora11g/oradata/oracle9i/control01.ctl','/data/ora11g/oradata/oracle9i/control02.ctl'
.db_block_size=16384
.db_cache_size=16777216000
.db_domain=''
.db_file_name_convert='/data/ora11g/oradata','/data/ora11g/oradata'
.db_flashback_retention_target=60
.db_name='oracle9i'
.db_recovery_file_dest='/data/ora11g/flashback'
.db_recovery_file_dest_size=4294967296
.db_unique_name='oradb1'
.diagnostic_dest='/data/ora11g'
.dispatchers='(PROTOCOL=TCP) (SERVICE=oracle9iXDB)'
.fal_client='ora11g_1.197'
.fal_server='ora11g_1.198'
.java_pool_size=104857600
.large_pool_size=209715200
.log_archive_config='DG_CONFIG=(oradb2,oradb1)'
.log_archive_dest_1='LOCATION=/data/ora11g/oradata/oracle9i/archive/ LGWR VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=oradb1'
.log_archive_dest_2='SERVICE=ora11g_1.198 ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=oradb2'
.log_archive_dest_state_1='ENABLE'
.log_archive_dest_state_2='ENABLE'
.log_archive_max_processes=10
.log_file_name_convert='/data/ora11g','/data/ora11g'
.open_cursors=1000
.pga_aggregate_target=2097152000
.processes=1000
.remote_login_passwordfile='EXCLUSIVE'
.sessions=885
.sga_max_size=23068672000
.shared_pool_size=1048576000
.standby_file_management='AUTO'
*.undo_tablespace='UNDOTBS1'
SQL> CREATE SPFILE FROM PFILE;
SQL> STARTUP nomount pfile='/data/ora11g/product/11.2.0/db_1/dbs/initoradb1.ora';
3,恢復數據和備份文件
rman target /
RMAN>set dbid=xxxxx;
rman>restore standby controlfile from '/data/backup/rman/control_xxx';
RMAN> alter database mount;
rman>catelog start with '/data/backup/rman/';#注冊備份
rman>restore database;
rman>recover database;
RMAN> alter database open resetlogs;
4.將主庫的LOG_ARCHIVE_DEST_STATE_2設置為ENABLE
ALTER SYSTEM SET LOG_ARCHIVE_DEST_STATE_2='ENABLE';
5.主備添加standby redo log
SQL> select member from v$logfile;

MEMBER

/data/ora11g/oradata/oracle9i/redo03.log
/data/ora11g/oradata/oracle9i/redo02.log
/data/ora11g/oradata/oracle9i/redo01.log

SQL>SELECT GROUP#, BYTES FROM V$STANDBY_LOG;
no rows selected

#主庫增加 STANDBY LOGFILE
ALTER DATABASE ADD STANDBY LOGFILE GROUP 4 '/data/ora11g/oradata/oracle9i/sredo04.log' size 50M;

ALTER DATABASE ADD STANDBY LOGFILE GROUP 5 '/data/ora11g/oradata/oracle9i/sredo05.log' size 50M;

ALTER DATABASE ADD STANDBY LOGFILE GROUP 6 '/data/ora11g/oradata/oracle9i/sredo06.log' size 50M;

ALTER DATABASE ADD STANDBY LOGFILE GROUP 7 '/data/ora11g/oradata/oracle9i/sredo07.log' size 50M;

ALTER DATABASE ADD STANDBY LOGFILE GROUP 8 '/data/ora11g/oradata/oracle9i/sredo08.log' size 50M;

#備庫增加STANDBY LOGFILE
SQL> select member from v$logfile;

MEMBER

/data/ora11g/oradata/oracle9i/redo03.log
/data/ora11g/oradata/oracle9i/redo02.log
/data/ora11g/oradata/oracle9i/redo01.log

ALTER DATABASE ADD STANDBY LOGFILE GROUP 4 '/data/ora11g/oradata/oracle9i/sredo04.log' size 50M;

ALTER DATABASE ADD STANDBY LOGFILE GROUP 5 '/data/ora11g/oradata/oracle9i/sredo05.log' size 50M;

ALTER DATABASE ADD STANDBY LOGFILE GROUP 6 '/data/ora11g/oradata/oracle9i/sredo06.log' size 50M;

ALTER DATABASE ADD STANDBY LOGFILE GROUP 7 '/data/ora11g/oradata/oracle9i/sredo07.log' size 50M;

ALTER DATABASE ADD STANDBY LOGFILE GROUP 8 '/data/ora11g/oradata/oracle9i/sredo08.log' size 50M;

6.開啟active dataguard

SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION;

SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL;

SQL> ALTER DATABASE OPEN;

SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION;

SQL> SELECT pid, PROCESS, STATUS, THREAD#, SEQUENCE#, BLOCK#, BLOCKS FROM V$MANAGED_STANDBY where process='RFS' or process='MRP0';

PID PROCESS STATUS THREAD# SEQUENCE# BLOCK# BLOCKS

3671 MRP0 APPLYING_LOG 1 78 25867 10485764317 RFS IDLE 0 0 0 04313 RFS IDLE 1 78 25867 14319 RFS IDLE 0 0 0 0

轉載于:https://blog.51cto.com/8184738/2054504

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