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rac4,adg的搭建

椰果玩安卓 2023-07-04 阅读 90
oracleSQLSystemOracle数据库yyds干货盘点

dg搭建

主库准备：


select name,log_mode,force_logging from v$database;

打开归档日志： 


alter system set log_archive_dest_1='location=+ARCH' sid='*';

shutdown immediate;

startup nomount;

alter database archivelog;

startup;


打开强制日志： 


alter database force logging;

select INST_ID,name,force_logging from gv$database;


主备，添加修改standby日志组，一个实例的standby都要比redo多一组 


alter database add standby logfile THREAD 1 group 16  size 1024M;

alter database add standby logfile THREAD 2 group 17  size 1024M;

alter database drop logfile group #;

添加修改redo 

alter database drop standby logfile group #;

alter database add logfile thread thread# group  GROUP#  ('$logfile') size 1024m;

备库打开，standby自动管理 


alter system set standby_file_management=auto;

检查redo和standby日志组 


select GROUP#, THREAD# ,BYTES/1024/1024/1024 G ,STATUS ，MEMBERS from  v$log  order by 2;

select GROUP#, THREAD# ,BYTES/1024/1024/1024 G ,STATUS from v$standby_log;




主库复制密码文件到本地 

asmcmd

ASMCMD> cd +DATA/ORCL/PASSWORD

ASMCMD> ls

pwdtccs.256.XXX


ASMCMD> pwcopy +DATA/ORCL/PASSWORD/pwdorcl.256.XXX /home/grid/

或

ASMCMD> pwcopy pwdorcl.256.XXX /home/grid/

传输密码文件到备库 


scp /home/grid/pwdorcl.256.XXX xxx.xxx.xxx.xxx:/home/grid/

通过pwcopy复制密码文件到备库ASM 下 


ASMCMD> pwcopy /home/grid/pwdorcl.256.XXX  +DATA/ORCL/PASSWORD --dbuniquename orclstb




主库进行修改参数 

SQL> alter system set LOG_ARCHIVE_CONFIG='DG_CONFIG=(XXXlpjc, XXXadg)';


System altered.


SQL> alter system set LOG_ARCHIVE_DEST_1='LOCATION=+ARCH VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=XXXlpjc';


System altered.


SQL> alter system set LOG_ARCHIVE_DEST_2='SERVICE=XXXadg LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=XXXadg';


System altered.


SQL> alter system set LOG_ARCHIVE_DEST_STATE_1=ENABLE;


System altered.


SQL> alter system set LOG_ARCHIVE_DEST_STATE_2=ENABLE;


System altered.


SQL> alter system set standby_file_management=auto;


System altered.

  
SQL> alter system set FAL_SERVER=XXXadg;  

System altered.


SQL> alter system set FAL_CLIENT=XXXlpjc;  

System altered.

如需进行地址转换 

alter system set db_file_name_convert='+DATA','+DATA' scope=spfile;  
alter system set log_file_name_convert='+ARCH','+DATA' scope=spfile;

--该参数需要重启，备库时生效




传输到备库，用pfile启动到nomount 


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




备库修改参数

备库添加监听静态注册 

alter system set LOG_ARCHIVE_CONFIG='DG_CONFIG=(XXXadg,XXXlpjc)';

 alter system set LOG_ARCHIVE_DEST_1='LOCATION=+ARCH VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=XXXadg';

alter system set LOG_ARCHIVE_DEST_2='SERVICE=XXXlpjc LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=XXXlpjc';


 alter system set LOG_ARCHIVE_DEST_STATE_1=ENABLE;

alter system set LOG_ARCHIVE_DEST_STATE_2=ENABLE;

 alter system set FAL_SERVER=XXXlpjc;

alter system set FAL_CLIENT=XXXadg;

alter system set standby_file_management=auto;

监听

备库在listener.ora中添加： 


SID_LIST_LISTENER =    
  (SID_LIST =    
    (SID_DESC =  

      (SID_NAME = PLSExtProc)    
      (ORACLE_HOME = /u01/app/oracle/product/19.0.0.0/dbhome_1)

      (PROGRAM = extproc)

    )

    (SID_DESC =  

      (GLOBAL_DBNAME = orclstb)  

      (ORACLE_HOME = /u01/app/oracle/product/19.0.0.0/dbhome_1)

      (SID_NAME = XXXstb)

    )

  )


主备添加监听，ur=a，备库的adg监听必须添加防止监听状态block 



XXXADG =

  (DESCRIPTION =

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

    (CONNECT_DATA =

      (SERVER = DEDICATED)

      (SERVICE_NAME = XXXadg)

   ( UR = A )

    )

  )

XXXLPJC =

  (DESCRIPTION =

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

    (CONNECT_DATA =

      (SERVER = DEDICATED)

      (SERVICE_NAME = XXXlpjc)

   ( UR = A )

    )

  )


如备库db没有添加到crs中 


srvctl add database -d XXXadg -o /u01/app/oracle/product/19.0.0.0/dbhome_1 -p '+DATA/XXXADG/PARAMETERFILE/spfile.287.1137863237' -pwfile '+DATA/XXXADG/PASSWORD/pwdorclstb.257.1076153149 ' -i XXXadg  -y AUTOMATIC -r physical_standby

备库RAC，需要把两个实例也加到集群管理，否则数据库无法跟随集群启动： 


srvctl add instance -d XXX -i orcl1 -n XXX

srvctl add instance -d XXX -i orcl2 -n XXX


注册后，即便实例是启动的，在集群资源中同样显示未启动，需要执行以下命令： 


srvctl start database -d XXX


添加密码文件 


srvctl modify database –d XXX –pwfile <password_file_path>

恢复

duplicate恢复


vi rman.rbv

duplicate target database for standby from active database nofilenamecheck;


vi bak.sh

rman target sys/oracle@orcl auxiliary sys/oracle@xx.xx.xx.xx:1521/orclstb cmdfile=/home/oracle/rman.rbv log=/home/oracle/rman.log append


nohup sh /home/oracle/bak.sh &


tail -111f rman.log




备份片生成备库 


备份主库:

rman target /

configure channel device type disk format '/home/oracle/rmanbk/%d_%I_%s_%p.bkp';

backup as compressed backupset database include current controlfile for standby plus archivelog;


将备份传输至备库

[oracle@up rmanbk]$ scp orcl_3078169696_* xxx.xxx.xxx.xxx:/home/oracle/rmanbk/


列出控制文件

rman target /

list backup of controlfile;


备库恢复控制文件

rman target /

restore standby controlfile from '/home/oracle/rmanbk/orcl_XXXX.bkp';



sql 'alter database mount';


进行数据恢复

run {

  allocate channel c1 type disk;

  allocate channel c2 type disk;

  allocate channel c3 type disk;

  allocate channel c4 type disk;

  restore database;

  recover database;

  release channel c1;

  release channel c2;

  release channel c3;

  release channel c4;

}


备库相关命令


--1.查询主备的同步情况

 set linesize 150;

 set pagesize 20;

 column name format a13;

 column value format a20;

 column unit format a30;

 column TIME_COMPUTED format a30;

 select name,value,unit,time_computed from v$dataguard_stats where name in ('transport lag','apply lag');

 

备库查询

alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss';

select THREAD#,count(FIRST_TIME) from v$archived_log where APPLIED='NO' group by THREAD#;

select THREAD#,min(FIRST_TIME) from v$archived_log where APPLIED='NO' group by THREAD#;

select THREAD#,min(SEQUENCE#) from v$archived_log where APPLIED='NO' group by THREAD#;

select BACKUP_COUNT from v$archived_log where THREAD#=&1 and SEQUENCE#=&2;

 

--2.查询备库的进程状态

SELECT PROCESS, STATUS,SEQUENCE#,thread# FROM V$MANAGED_STANDBY;

 

--3.查询备库的角色

set linesize 150;  

column DBNAME format a6;

column DBUNAME format a10;

column cftype format a8;

column OPEN_MODE format a20;

column DATABASE_ROLE format a18;

select name dbname,db_unique_name dbuname,controlfile_type cftype,database_role,open_mode from v$database;

 

--4.查询备库的日志应用模式

SELECT RECOVERY_MODE FROM V$ARCHIVE_DEST_STATUS WHERE DEST_ID=1;    

RECOVERY_MODE

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

MANAGED REAL TIME APPLYs

 

--5.开启日志应用进程：

--应用stanby 实时同步

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

Database altered.

并行应用日志：

ALTER DATABASE RECOVER MANAGED STANDBY DATABASE using current logfile DISCONNECT FROM SESSION parallel 8;

 

--6.取消日志应用

ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL;                                                                              

 

--7. 查看ADG日志差：

SELECT /*+rule*/ ARCH.THREAD# "Thread",

       ARCH.SEQUENCE# "Last Sequence Received",  

       APPL.SEQUENCE# "Last Sequence Applied",  

       (ARCH.SEQUENCE# - APPL.SEQUENCE#) "Difference"  

  FROM (SELECT THREAD#, SEQUENCE#

          FROM V$ARCHIVED_LOG  

         WHERE (THREAD#, FIRST_CHANGE#) IN

               (SELECT THREAD#, MAX(FIRST_CHANGE#)  

                  FROM V$ARCHIVED_LOG

                 GROUP BY THREAD#)

         GROUP BY THREAD#, SEQUENCE#) ARCH,

       (SELECT THREAD#, SEQUENCE#  

          FROM V$LOG_HISTORY  

         WHERE (THREAD#, FIRST_CHANGE#) IN

               (SELECT THREAD#, MAX(FIRST_CHANGE#)

                  FROM V$LOG_HISTORY

                 GROUP BY THREAD#)) APPL

 WHERE ARCH.THREAD# = APPL.THREAD#  

 ORDER BY 1;  


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