物理standby database的日常維護
阿新 • • 發佈：2017-08-18
for str startup using commit system ava sys art 1.停止Standby
select process, status from v$managed_standby; --查看備庫是否在應用日誌進行恢復
alter database recover managed standby database cancel;
shutdown immediate; 2.切換到只讀模式 -----由shutdown模式切換到只讀模式------- startup nomount;
alter database mount standby database;
alter database open read only; -----由應用日誌模式切換到只讀模式-------
alter database open read only; 3.切換回管理恢復模式 startup nomount;
alter database mount standby database;
alter database recover managed standby database disconnect from session; -- 啟動日誌應用 alter database recover managed standby database using current logfile disconnect from session;
alter database commit to switchover to physical standby; alter database commit to switchover to physical standby with session shutdown;-- 主庫有會話連接的時候
shutdown immediate
startup nomount;
alter database mount standby database;
alter database recover managed standby database disconnect from session;
shutdown immediate;
startup
alter system switch logfile; 5.備庫自動使用主庫傳過來的日誌進行恢復 alter database recover automatic standby database; 6.更改保護模式 alter database set standby database to maximize protection;
alter database set standby database to maximize availability;
alter database set standby database to maximize performancen; 7.取消自動恢復模式 alter database recover managed standby database cancel;
alter database recover managed standby database finish;
alter database recover managed standby database finish force;
shutdown immediate; 2.切換到只讀模式 -----由shutdown模式切換到只讀模式------- startup nomount;
alter database mount standby database;
alter database open read only; -----由應用日誌模式切換到只讀模式-------
alter database open read only; 3.切換回管理恢復模式 startup nomount;
alter database mount standby database;
alter database recover managed standby database disconnect from session; -- 啟動日誌應用 alter database recover managed standby database using current logfile disconnect from session;
alter database commit to switchover to physical standby; alter database commit to switchover to physical standby with session shutdown;-- 主庫有會話連接的時候
shutdown immediate
startup nomount;
alter database mount standby database;
alter database recover managed standby database disconnect from session;
shutdown immediate;
startup
alter system switch logfile; 5.備庫自動使用主庫傳過來的日誌進行恢復 alter database recover automatic standby database; 6.更改保護模式 alter database set standby database to maximize protection;
alter database set standby database to maximize availability;
alter database set standby database to maximize performancen; 7.取消自動恢復模式 alter database recover managed standby database cancel;
alter database recover managed standby database finish;
alter database recover managed standby database finish force;
物理standby database的日常維護