1.前言

　　在oracle的運維過程中，時常會遇到一些場景需要重建控制檔案，以下是通過複製控制檔案到新路徑，執行一段時間後，再用老的控制檔案啟動資料庫重現。

2.步驟

SQL> shutdown abort     
ORACLE instance shut down.
SQL> startup mount

ORACLE instance started.

Total System Global Area  599785472 bytes
Fixed Size                  2098112 bytes
Variable Size             218106944
 
 bytes
Database Buffers          373293056 bytes
Redo Buffers                6287360 bytes
Database mounted.
SQL> alter database backup controlfile to trace;  ##這裡會生產一個trace檔案，該檔案中有一些控制檔案的建立語句

Database altered.

SQL> oradebug setmypid
Statement processed.
SQL> oradebug tracefile_name
/s01/oracle/
 
admin/cxywdb/udump/cxywdb_ora_3983.trc  ##這個是trace檔案的位置
SQL> shutdown abort
ORACLE instance shut down.
SQL> startup nomount;
ORACLE instance started.

Total System Global Area  599785472 bytes
Fixed Size                  2098112 bytes
Variable Size             218106944 bytes
Database Buffers          373293056
 
 bytes
Redo Buffers                6287360 bytes
SQL> @control.sql   ##這裡應該是上面建立控制語句的sql檔案(用vim建立一個控制檔案)

Control file created.
SQL> select status from v$instance;

STATUS
------------
MOUNTED

SQL> recover database;
Media recovery complete.
SQL> alter database open;

Database altered.

建立控制檔案的官方文件:https://docs.oracle.com/cd/B28359_01/server.111/b28310/control003.htm#ADMIN10064

精華參考：https://cloud.tencent.com/developer/article/1681540