Oracle 12C RAC TO RAC Data Guard on RHEL7
0.环境说明
| primary db | physical standby | |
| 操作系统 | rhel7 x86_64 | rhel7 x86_64 |
| 数据库版本 | 12.2.0.1 | 12.2.0.1 |
| IP | 10.150.10.134/136 | 10.150.10.139/141 |
| 主机名称 | vm-oradb1-N1/N2 | vm-oradb2-N1/N2 |
| 数据库名称 | albin | albin |
| db_unique_name | albin | albindg |
| 实例名称 | albin1/albin2 | albin1/albin2 |
| tnsnames | tns_albin | tns_albindg |
| dg监听 | lsnr_dg:1625 | lsnr_dg:1625 |
1. 创建primary容器库
1）dbca建库
dbca -ignorePreReqs -ignorePrereqFailure -silent -createDatabase \
-gdbName albin \
-sid albin \
-templateName General_Purpose.dbc \
-characterSet AL32UTF8 \
-createAsContainerDatabase true \
-numberOfPDBs 1 \
-pdbName tmpdb \
-pdbAdminPassword oraP#ssw0rd \
-pdbOptions JSERVER:true,XML:true,CATJAVA:true,CONTEXT:true,ORDIM:true \
-useLocalUndoForPDBs true \
-databaseConfigType RAC \
-databaseType MULTIPURPOSE \
-datafileDestination +DATA \
-datafileJarLocation /oracle/app/oracle/product/12.2/db_1/assistants/dbca/templates \
-emConfiguration NONE \
-enableArchive false \
-memoryMgmtType AUTO_SGA \
-memoryPercentage 20 \
-nationalCharacterSet AL16UTF16 \
-nodelist vm-oradb1-N1,vm-oradb1-N2 \
-redoLogFileSize 100 \
-storageType ASM \
-sysPassword oraP#ssw0rd \
-systemPassword oraP#ssw0rd \
-useOMF true \
-recoveryAreaDestination NONE
2. 配置Oracle Net和监听
1）tnsnames配置（主备）
su - oracle
vi $(orabasehome)/network/admin/tnsnames.ora
tns_albin =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.150.10.135)(PORT = 1625))
)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = albin)
)
)
tns_albindg =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.150.10.140)(PORT = 1625))
)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = albindg)
(UR = A)
)
)2）配置监听
-- 主备添加dg监听器
su - grid
srvctl add listener -listener LSNR_DG -endpoints "TCP:1625"
srvctl start listener -listener LSNR_DG
-- 备库添加静态监听
vi $(orabasehome)/network/admin/listener.ora
SID_LIST_LSNR_DG =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = albindg)
(ORACLE_HOME = /oracle/app/12.2.0/grid)
(SID_NAME = albin1)
)
(SID_DESC =
(GLOBAL_DBNAME = albindg_DGMGRL)
(ORACLE_HOME = /oracle/app/12.2.0/grid)
(SID_NAME = albin1)
)
)
注：其它节点实例按实际情况修改标红处内容
3. 密码文件配置
1）查看密码文件路径
$ srvctl config database -d albin
Database unique name: albin
Database name: albin
Oracle home: /oracle/app/oracle/product/12.2/db_1
Oracle user: oracle
Spfile: +DATA/ALBIN/PARAMETERFILE/spfile.1328.982582089
Password file: +DATA/ALBIN/PASSWORD/pwdalbin.1312.982581307
Domain:
Start options: open2）复制密码文件到备端服务器
拷贝密码文件到文件系统并传到备端服务器
方案1：
su - oracle
sqlplus "/ as sysdba"
create or replace directory source_dir as '+data/albin/password';
create or replace directory dest_dir as '/tmp';
set lines 168 pages 99
col DIRECTORY_NAME for a32
col owner for a18
col DIRECTORY_PATH for a80
select owner, DIRECTORY_NAME, DIRECTORY_PATH,ORIGIN_CON_ID from dba_directories;
begin
dbms_file_transfer.copy_file( source_directory_object => 'source_dir',
source_file_name => 'pwdalbin.1312.982581307',
destination_directory_object => 'dest_dir',
destination_file_name => 'orapwalbin');
end;
/
SQL> host ls -l /tmp/orapwalbin
方案2:
su - grid
asmcmd
cd data/albin/password
cp pwdalbin.1312.982581307 /tmp/orapwalbin
-- 备端服务器节点 scp /tmp/orapwalbin grid@vm-ora-N1:/tmp/orapwalbin
su - grid
asmcmd -exec "cp /tmp/orapwalbin +data/albindg/password/orapwalbin"
4. 主库开启force logging 和归档
SQL> alter database force logging;
alter system set log_archive_format='%t_%s_%r.arc' scope=spfile sid='*';
alter system set db_recovery_file_dest_size='102400M' scope=spfile sid='*';
alter system set db_recovery_file_dest='+data' scope=spfile sid='*';
alter system set db_file_name_convert='+data/albindg','+data/albin' scope=spfile sid='*';
alter system set log_file_name_convert='+data/albindg/onlinelog','+data/albin/onlinelog' scope=spfile sid='*';
create pfile='/home/oracle/albin20180816.ora' from spfile;
srvctl stop database -db albin
srvctl start instance -db albin -i albin1 -o mount
sqlplus "/ as sysdba"
alter database archivelog;
alter database flashback on;
srvctl stop instance -db albin -i albin1
srvctl start database -db albin
5. 主库配置dg参数
alter system set db_block_checking=FULL scope=both sid='*';
alter system set db_block_checksum=FULL scope=both sid='*';
alter system set db_lost_write_protect=TYPICAL scope=both sid='*';
alter system set standby_db_preserve_states=ALL scope=spfile sid='*';
alter system set log_archive_config='DG_CONFIG=(albin,albindg)' scope=both sid='*';
alter system set log_archive_dest_1='location=USE_DB_RECOVERY_FILE_DEST VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=albin' scope=both sid='*';
alter system set log_archive_dest_2='SERVICE=tns_albindg LGWR SYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=albindg' scope=both sid='*';
alter system set fal_server=tns_albindg scope=both sid='*';
alter system set fal_client=tns_albin scope=both sid='*';
alter system set standby_file_management=AUTO scope=both sid='*';
6. 创建pfile给备库使用
sqlplus "/ as sysdba"
create pfile='/home/oracle/stdby.ora' from spfile;
host scp /home/oracle/stdby.ora oracle@vm-ora-N1:/home/oracle/stdby.ora
7.主库上创建standby redo logfile
对物理备库创建备重做日志文件,查询主库的联机重做日志文件，备重做日志文件的大小应该与主库联机重做日志文件的大小相同，备重做日志文件组的数量应该比主库联机重做日志文件组多一组，计算公式为(maximum # of logfiles +1) * maximum # of threads (实际：standby_redo_logs = 主库日志组+1，成员数量一致)
注意：RAC数据库，在创建重做日志文件时需要指定thread号
alter database add standby logfile thread 1 group 11 ('+DATA') size 100M;
alter database add standby logfile thread 1 group 12 ('+DATA') size 100M;
alter database add standby logfile thread 1 group 13 ('+DATA') size 100M;
or alter database add standby logfile thread 1 group 11 ('+DATA') size 100M，group 12 ('+DATA') size 100M，group 13 ('+DATA') size 100M;
alter database add standby logfile thread 1 group 11 ('+DATA','+DATA') size 100M，group 12 ('+DATA','+DATA') size 100M，group 13 ('+DATA','+DATA') size 100M;
alter database add standby logfile thread 2 group 21 ('+DATA') size 100M;
alter database add standby logfile thread 2 group 22 ('+DATA') size 100M;
alter database add standby logfile thread 2 group 23 ('+DATA') size 100M;
8. 编辑备库pfile并修改参数配置
vi stdby.ora
*.audit_file_dest='/oracle/app/oracle/admin/albin/adump'
*.audit_trail='db'
*.cluster_database=true
*.compatible='12.2.0'
*.control_files='+DATA/ALBINDG/CONTROLFILE/current.1317.982581509'
*.db_block_checking='FULL'
*.db_block_checksum='FULL'
*.db_block_size=8192
*.db_create_file_dest='+DATA'
*.db_file_name_convert='+data/albin','+data/albindg'
*.db_lost_write_protect='TYPICAL'
*.db_name='albin'
*.db_unique_name='albindg'
*.db_recovery_file_dest='+DATA'
*.db_recovery_file_dest_size=107374182400
*.diagnostic_dest='/oracle/app/oracle'
*.dispatchers=''
*.enable_pluggable_database=true
*.fal_client='TNS_ALBIN'
*.fal_server='TNS_ALBINDG'
family:dw_helper.instance_mode='read-only'
albin1.instance_number=1
albin2.instance_number=2
albin2.thread=2
albin1.thread=1
albin2.undo_tablespace='UNDOTBS2'
albin1.undo_tablespace='UNDOTBS1'
*.local_listener='-oraagent-dummy-'
*.log_archive_config='DG_CONFIG=(albin,albindg)'
*.log_archive_dest_1='LOCATION=USE_DB_RECOVERY_FILE_DEST VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=albindg'
*.log_archive_dest_2='SERVICE=tns_albin LGWR SYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=albin'
*.log_archive_format='%t_%s_%r.arc'
*.log_file_name_convert='+data/albin/onlinelog','+data/albindg/onlinelog'
*.nls_language='AMERICAN'
*.nls_territory='AMERICA'
*.open_cursors=300
*.pga_aggregate_target=838860800
*.sga_target=2499805184
*.processes=640
*.remote_login_passwordfile='exclusive'
*.standby_db_preserve_states='ALL'
*.standby_file_management='AUTO'
9. 备库创建目录结构
mkdir -p $(orabase)/admin/albin/{adump,dpdump,pfile,xdb_wallet}
10. 备库启动nomount
export ORACLE_SID=albin1
sqlplus "/ as sysdba"
create spfile='+data' from pfile='/home/oracle/stdby.ora';
startup nomount;
-- 获取spfile路径名称
su - grid
asmcmd spget
11. rman duplicate 初始化备库
rman target sys/oraP#ssw0rd@tns_albin auxiliary sys/oraP#ssw0rd@tns_albindg nocatalog
run{
allocate channel c1 device type disk;
allocate channel c2 device type disk;
allocate channel c3 device type disk;
allocate channel c4 device type disk;
allocate auxiliary channel aux1 device type disk;
allocate auxiliary channel aux2 device type disk;
allocate auxiliary channel aux3 device type disk;
allocate auxiliary channel aux4 device type disk;
duplicate target database for standby from active database nofilenamecheck;
}
12. 备库注册数据库实例服务
srvctl add database -db albindg -oraclehome /oracle/app/oracle/product/12.2/db_1 -dbtype RAC -spfile '+DATA/ALBIN/PARAMETERFILE/<根据步骤10结果补充>' -role physical_standby -startoption open -stopoption immediate -dbname albin -policy automatic -diskgroup DATA
srvctl add instance -db albindg -instance albin1 -n vm-ora-N1
srvctl add instance -db albindg -instance albin2 -n vm-ora-N2
13. 备库执行实时重做应用(其中一个节点实例执行）
sqlplus "/ as sysdba"
alter database recover managed standby database using current logfile disconnect from session;
-- alter database recover managed standby database parallel 8 using current logfile disconnect from session;
-- 关闭实时应用
alter database recover managed standby database cancel;
来源：oschina
链接：https://my.oschina.net/u/4339513/blog/3861431