Oracle 11.2.0.4.0 Dataguard部署和日常維護(6)-Active dataguard
阿新 • • 發佈：2017-07-06
ima file man log role 主備 span for current
1. 檢查主備庫的狀態
- on primary
column DATABASE_ROLE format a20 column OPEN_MODE format a15 column PROTECTION_MODE format a20 column SWITCHOVER_STATUS format a20 select DATABASE_ROLE,OPEN_MODE,PROTECTION_MODE,SWITCHOVER_STATUS from v$database; DATABASE_ROLE OPEN_MODE PROTECTION_MODE SWITCHOVER_STATUS-------------------- --------------- -------------------- -------------------- PRIMARY READ WRITE MAXIMUM PERFORMANCE TO STANDBY select max(sequence#) from v$archived_log; MAX(SEQUENCE#) -------------- 68
- on standby
column DATABASE_ROLE format a20 column OPEN_MODE format a15column PROTECTION_MODE format a20 column SWITCHOVER_STATUS format a20 select DATABASE_ROLE,OPEN_MODE,PROTECTION_MODE,SWITCHOVER_STATUS from v$database; DATABASE_ROLE OPEN_MODE PROTECTION_MODE SWITCHOVER_STATUS -------------------- --------------- -------------------- --------------------PHYSICAL STANDBY MOUNTED MAXIMUM PERFORMANCE NOT ALLOWED select SEQUENCE#,APPLIED from v$archived_log where SEQUENCE#=(select max(sequence#) from v$archived_log); SEQUENCE# APPLIED ---------- --------------------------- 68 IN-MEMORY select process,status,sequence# from v$managed_standby; PROCESS STATUS SEQUENCE# ------------------- ----------------------- ---------- ARCH CLOSING 68 ARCH CONNECTED 0 ARCH CONNECTED 0 ARCH CLOSING 65 RFS IDLE 0 RFS IDLE 69 RFS IDLE 0 MRP0 APPLYING_LOG 69
2. 取消備庫的MPR恢復線程
alter database recover managed standby database cancel;
3. 備庫以readonly方式打開
alter database open read only; select DATABASE_ROLE,OPEN_MODE,PROTECTION_MODE,SWITCHOVER_STATUS from v$database; DATABASE_ROLE OPEN_MODE PROTECTION_MODE SWITCHOVER_STATUS -------------------- --------------- -------------------- -------------------- PHYSICAL STANDBY READ ONLY MAXIMUM PERFORMANCE NOT ALLOWED select process,status,sequence# from v$managed_standby; PROCESS STATUS SEQUENCE# ------------------- ----------------------- ---------- ARCH CLOSING 68 ARCH CONNECTED 0 ARCH CONNECTED 0 ARCH CLOSING 65 RFS IDLE 0 RFS IDLE 69 RFS IDLE 0
4. 開啟備庫的MPR線程
alter database recover managed standby database using current logfile disconnect from session;
select process,status,sequence# from v$managed_standby; PROCESS STATUS SEQUENCE# ------------------- ----------------------- ---------- ARCH CLOSING 68 ARCH CONNECTED 0 ARCH CONNECTED 0 ARCH CLOSING 65 RFS IDLE 0 RFS IDLE 69 RFS IDLE 0 MRP0 APPLYING_LOG 69
5. 測試active dataguard
- on primary
create table test01 as select FILE_NAME from dba_data_files; select * from test01; FILE_NAME ------------------------------------------------------------ /u01/app/oracle/oradata/userdata/users01.dbf /u01/app/oracle/oradata/userdata/undotbs01.dbf /u01/app/oracle/oradata/userdata/sysaux01.dbf /u01/app/oracle/oradata/userdata/system01.dbf
- on standby
select * from test01; FILE_NAME ------------------------------------------------------------ /u01/app/oracle/oradata/userdata/users01.dbf /u01/app/oracle/oradata/userdata/undotbs01.dbf /u01/app/oracle/oradata/userdata/sysaux01.dbf /u01/app/oracle/oradata/userdata/system01.dbf
Oracle 11.2.0.4.0 Dataguard部署和日常維護(6)-Active dataguard