ADG误删除system01.dbf故障处理

一、描述
11.2.0.4单实例主备库，主库system01.dbf误删除，导致数据库启动失败。

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二、现象
SQL> startup
ORACLE instance started.

Total System Global Area 3089920000 bytes
Fixed Size 2257232 bytes
Variable Size 654315184 bytes
Database Buffers 2415919104 bytes
Redo Buffers 17428480 bytes
Database mounted.
ORA-01157: cannot identify/lock data file 1 - see DBWR trace file
ORA-01110: data file 1: '/oradata/devdb/system01.dbf'

三、处理过程

1. 停备库，传输数据文件
   scp system01.dbf 1xx.55.3.xx:/oradata/devdb/
2. 启动主库、恢复数据文件
   SQL> startup
   ORACLE instance started.

Total System Global Area 3089920000 bytes
Fixed Size 2257232 bytes
Variable Size 654315184 bytes
Database Buffers 2415919104 bytes
Redo Buffers 17428480 bytes
Database mounted.
ORA-01113: file 1 needs media recovery
ORA-01110: data file 1: '/oradata/devdb/system01.dbf'

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

Database altered.

3.启动备库、启用恢复进程
SQL> startup
SQL> alter database recover managed standby database using current logfile disconnect from session;

Database altered.

SQL> select process,status from v$managed_standby;

PROCESS STATUS

---

ARCH CLOSING
ARCH CONNECTED
ARCH CONNECTED
ARCH CLOSING
RFS IDLE
RFS IDLE
RFS IDLE
MRP0 APPLYING_LOG

8 rows selected.

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