ORACLE RAC ADG容灾实施

deadknight92024-03-05 12:04

--1、主库检查

检查修改主库的force logging 模式

sqlplus / as sysdba

SQL>select FORCE_LOGGING from v$database;

alter database force logging;

--主库remote_login_passwordfile 为EXCLUSIVE

show parameter remote_login_passwordfile

---2、主库参数

alter system set DB_UNIQUE_NAME=orcl scope=spfile;

alter system set log_archive_config='DG_CONFIG=(orcl,adg)' scope=both;

alter system set LOG_ARCHIVE_DEST_1='LOCATION=+data/ORCL/archivelog VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=orcl' scope=both;

alter system set LOG_ARCHIVE_DEST_2='SERVICE=adgdg LGWR SYNC AFFIRM VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=adg';

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

alter system set fal_client='orcldg';

alter system set fal_server='adgdg';

alter system set db_file_name_convert='+DATA','+DATA' SCOPE=SPFILE;

ALTER SYSTEM SET log_file_name_convert='+DATA','+DATA' SCOPE=SPFILE;

--3、新增tnsname.ora

--主库和备库 1节点

orcldg =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.23)(PORT = 1521)

)

(CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = orcl)

)

)

adgdg =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.133)(PORT = 1521)

)

(CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = ADG)

)

)

--主库和备库 2节点

orcldg =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.12)(PORT = 1521)

)

(CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = orcl)

)

)

adgdg =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.134)(PORT = 1521)

)

(CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = adg)

)

)

--4、备份主库 和 control file

rman target /

backup as compressed backupset database format '/tmp/bak/racdb%U';

sqlplus / as sysdba

ALTER DATABASE CREATE STANDBY CONTROLFILE AS '/home/oracle/stb_ctl';

--5、创建pfile

sqlplus / as sysdba

create pfile='/home/oracle/pfile.ora' from spfile;

more pfile

orcl1.__db_cache_size=855638016

orcl2.__db_cache_size=855638016

orcl1.__java_pool_size=16777216

orcl2.__java_pool_size=16777216

orcl1.__large_pool_size=33554432

orcl2.__large_pool_size=33554432

orcl2.__oracle_base='/u01/app/oracle'#ORACLE_BASE set from environment

orcl1.__pga_aggregate_target=872415232

orcl2.__pga_aggregate_target=872415232

orcl1.__sga_target=1275068416

orcl2.__sga_target=1275068416

orcl1.__shared_io_pool_size=0

orcl2.__shared_io_pool_size=0

orcl1.__shared_pool_size=352321536

orcl2.__shared_pool_size=352321536

orcl1.__streams_pool_size=0

orcl2.__streams_pool_size=0

*.aq_tm_processes=5

*.audit_file_dest='/u01/app/oracle/admin/orcl/adump'

*.audit_trail='db'

*.cluster_database=true

*.compatible='11.2.0.4.0'

*.control_files='+DATA/orcl/controlfile/current.261.995444255','+DATA/orcl/controlfile/current.260.995444255'

*.db_block_size=8192

*.db_create_file_dest='+DATA'

*.db_domain=''

*.db_file_name_convert='+DATA','+DATA'

*.db_name='orcl'

*.db_recovery_file_dest='+DATA'

*.db_recovery_file_dest_size=1073741824

*.diagnostic_dest='/u01/app/oracle'

*.dispatchers='(PROTOCOL=TCP) (SERVICE=orclXDB)'

*.enable_goldengate_replication=TRUE

*.fal_client='orcldg'

*.fal_server='adgdg'

orcl1.instance_number=1

orcl2.instance_number=2

*.log_archive_config='DG_CONFIG=(orcl,adg)'

*.log_archive_dest_1='LOCATION=+data/ORCL/archivelog VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=orcl'

*.log_archive_dest_2='SERVICE=adg LGWR SYNC AFFIRM VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=adg'

*.log_archive_format='%t_%s_%r.dbf'

*.log_file_name_convert='+DATA','+DATA'

*.memory_target=2147483648

*.open_cursors=300

*.processes=150

*.remote_listener='rac-scan:1521'

*.remote_login_passwordfile='exclusive'

*.standby_file_management='AUTO'

orcl2.thread=2

orcl1.thread=1

orcl2.undo_tablespace='UNDOTBS2'

orcl1.undo_tablespace='UNDOTBS1'

--6、拷贝到备库修改pfile

按照db_unique_name 不同修改，但要保持 db_name 相同，需要指定control file的位置

scp pfile.ora oracle@standby:/home/oracle/

more pfile.ora

adg1.__db_cache_size=855638016

adg2.__db_cache_size=855638016

adg1.__java_pool_size=16777216

adg2.__java_pool_size=16777216

adg1.__large_pool_size=33554432

adg2.__large_pool_size=33554432

adg2.__oracle_base='/u01/app/oracle'#ORACLE_BASE set from environment

adg1.__pga_aggregate_target=872415232

adg2.__pga_aggregate_target=872415232

adg1.__sga_target=1275068416

adg2.__sga_target=1275068416

adg1.__shared_io_pool_size=0

adg2.__shared_io_pool_size=0

adg1.__shared_pool_size=352321536

adg2.__shared_pool_size=352321536

adg1.__streams_pool_size=0

adg2.__streams_pool_size=0

*.aq_tm_processes=5

*.audit_file_dest='/u01/app/oracle/admin/adg/adump'

*.audit_trail='db'

*.cluster_database=true

*.compatible='11.2.0.4.0'

*.control_files='+DATA/adg/controlfile/control01.ctl','+DATA/adg/controlfile/control02.ctl'

*.db_block_size=8192

*.db_create_file_dest='+DATA'

*.db_domain=''

*.db_file_name_convert='+DATA','+DATA'

*.db_name='orcl'

*.db_unique_name='adg'

*.db_recovery_file_dest='+DATA'

*.db_recovery_file_dest_size=1073741824

*.diagnostic_dest='/u01/app/oracle'

*.dispatchers='(PROTOCOL=TCP) (SERVICE=adgXDB)'

*.enable_goldengate_replication=TRUE

*.fal_client='adgdg'

*.fal_server='adgdg'

adg1.instance_number=1

adg2.instance_number=2

*.log_archive_config='DG_CONFIG=(adg,adg)'

*.log_archive_dest_1='LOCATION=+data/ORCL/archivelog VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=adg'

*.log_archive_dest_2='SERVICE=adg LGWR SYNC AFFIRM VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=adg'

*.log_archive_format='%t_%s_%r.dbf'

*.log_file_name_convert='+DATA','+DATA'

*.memory_target=2147483648

*.open_cursors=300

*.processes=150

*.remote_login_passwordfile='exclusive'

*.standby_file_management='AUTO'

adg2.thread=2

adg1.thread=1

adg2.undo_tablespace='UNDOTBS2'

adg1.undo_tablespace='UNDOTBS1'

--7、备库创建目前并以pfile起动

mkdir -p /u01/app/oracle/admin/adg/adump

export ORACLE_SID=adg1

sqlplus / as sysdba

startup nomount pfile='/home/oracle/pfile.ora';

这里可能会报内存空间不足，可能是由于shm不足引起，需要重新挂载shm

root@rac2 \~# more /etc/fstab

LABEL=/ / ext3 defaults 1 1

LABEL=/boot /boot ext3 defaults 1 2

tmpfs /dev/shm tmpfs defaults,size=1024M 0 0

devpts /dev/pts devpts gid=5,mode=620 0 0

sysfs /sys sysfs defaults 0 0

proc /proc proc defaults 0 0

LABEL=SWAP-sda2 swap swap defaults 0 0

增大到了3G，然后重新mount即可生效。

mount -o remount /dev/shm

--8、拉起备库，并调整参数

sqlplus / as sysdba

startup nomount

create spfile='+data' from pfile='/home/oracle/pfile.ora';

vi $ORACLE_HOME/dbs/initadg1.ora

spfile='+DATA/adg/parameterfile/spfile.258.1004832971'

vi $ORACLE_HOME/dbs/initadg2.ora

spfile='+DATA/adg/parameterfile/spfile.258.1004832971'

shutdown immediate;

startup mount

alter system set DB_UNIQUE_NAME=adg scope=spfile;

alter system set log_archive_config='DG_CONFIG=(orcl,adg)' scope=both;

alter system set LOG_ARCHIVE_DEST_1='LOCATION=+data VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=adg' scope=both;

alter system set LOG_ARCHIVE_DEST_2='SERVICE=orcldg LGWR SYNC AFFIRM VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=orcl';

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

alter system set fal_client='adgdg';

alter system set fal_server='orcldg';

alter system set db_file_name_convert='+DATA','+DATA' SCOPE=SPFILE;

ALTER SYSTEM SET log_file_name_convert='+DATA','+DATA' SCOPE=SPFILE;

--9、在备库还原control file和数据库

ASMCMD> cp /home/grid/stb_ctl control01.ctl

ASMCMD> cp /home/grid/stb_ctl control02.ctl

rman target /

catlog start with '/home/oracle/bak';

restore database;

catlog start with '+data/adg/datafile';

switch database to copy;

--10、在备库先添加standby redo，然后再在主库添加

alter database add standby logfile thread 1 group 51 '+data' size 50m;

alter database add standby logfile thread 1 group 61 '+data' size 50m;

alter database add standby logfile thread 2 group 71 '+data' size 50m;

alter database add standby logfile thread 2 group 81 '+data' size 50m;

--11、起动验证

sqlplus / as sysdba

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

--开启read only模式

alter database recover managed standby database cancel;

alter database open read only;

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

--12、拉起2节点

注意环境变量，tnsnames.ora、监听状态

sqlplus / as sysdba

startup

--13、注册数据库到CRS

srvctl add database -d adg -n orcl -o $ORACLE_HOME

srvctl add instance -d adg -i adg1 -n adg1

srvctl add instance -d adg -i adg2 -n adg2

--14、检查

--备库

col scn for 9999999999999999999

select current_scn from v$database;

--主库

select current_scn as scn from dual;

select group#,thread#, SEQUENCE#,ARCHIVED from v$log;

select PROCESS,THREAD#,SEQUENCE# from v$managed_standby;

相关推荐
ClouGence3 天前
Oracle CDC 架构优化：从主库直连到 DataGuard 备库同步
数据库·后端·oracle
曹牧3 天前
Oracle EXPLAIN PLAN
数据库·oracle
贤时间3 天前
codex 助力oracle ebs 开发
数据库·oracle
秉承初心3 天前
PostgreSQL 数据性能瓶颈突破实战
数据库·postgresql·oracle
Curvatureflight4 天前
MySQL 深分页越来越慢？从 LIMIT OFFSET 改成游标分页
数据库·oracle
XZ-0700014 天前
MySQL事务
数据库·mysql·oracle
tiancaijiben4 天前
阿里云函数计算FC如何实现网站的定时任务与自动化
数据库·oracle·dba
xfhuangfu4 天前
Oracle 19c 多租户体系架构介绍
数据库·oracle·架构
杨云龙UP4 天前
Spotlight 接入 Oracle 数据库监控操作指南 2026-06-16
数据库·oracle·性能监控·预警·阈值·spotlight·瓶颈分析
unique4 天前
AI Coding 采集方案探索
jvm·人工智能·oracle
热门推荐
012026年6月AI行业全景：从百模大战到Agent元年，这30天发生了什么？022026年6月AI大模型全景报告：GPT-5.6、Claude Opus 4.8、Gemini 3.5，中美AI三足鼎立谁主沉浮？032026 年 AI 编程工具终极横评：Cursor vs Claude Code vs Copilot vs Windsurf04【AI】2026 年具身智能模型和世界模型总结05GitHub 镜像站点06AI科技热点日报 | 2026年6月1日07AI一周事件 · 2026-06-03 至 2026-06-09082026 AI 编程工具终极实战指南：Cursor vs Claude Code vs Copilot，开发者该怎么选？09Claude Code、Codex、Cursor三分天下：2026年AI编程Agent生态全景剖析10上线仅72小时被强制下架：Claude Fable 5 的短命