一、描述
单实例ADG数据库，备库system01.dbf文件损坏，需要重新恢复数据文件，保证主库库数据一致。

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二、处理过程

1、数据库启动到mount状态
Recovery Manager: Release 11.2.0.4.0 - Production on Thu Dec 12 20:42:35 2019

Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.

connected to target database (not started)

RMAN> startup mount;

Oracle instance started
database mounted

Total System Global Area 3089920000 bytes

Fixed Size 2257232 bytes
Variable Size 654315184 bytes
Database Buffers 2415919104 bytes
Redo Buffers 17428480 bytes

2、使用RMAN恢复
$rman target sys/xxxx@devdb auxiliary sys/xxx@devdbdg

Recovery Manager: Release 11.2.0.4.0 - Production on Thu Dec 12 20:43:53 2019

Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.

connected to target database: DEVDB (DBID=931475173)
connected to auxiliary database: DEVDB (DBID=931475173, not open)

RMAN> run {
allocate channel d1 type disk ;
allocate channel d2 type disk ;
backup as copy reuse
datafile 1 auxiliary format '/oradata/devdbdg/system01.dbf';
}2> 3> 4> 5> 6>

using target database control file instead of recovery catalog
allocated channel: d1
channel d1: SID=1145 device type=DISK

allocated channel: d2
channel d2: SID=1715 device type=DISK

Starting backup at 12-DEC-2019 20:45:23
channel d1: starting datafile copy
input datafile file number=00001 name=/oradata/devdb/system01.dbf

output file name=/oradata/devdbdg/system01.dbf tag=TAG20191212T204523
channel d1: datafile copy complete, elapsed time: 00:00:15
Finished backup at 12-DEC-2019 20:45:38
released channel: d1
released channel: d2

RMAN>
RMAN> exit

Recovery Manager complete.
$sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Thu Dec 12 20:45:50 2019

Copyright (c) 1982, 2013, Oracle. All rights reserved.

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> alter database recover managed standby database using current logfile disconnect from session;

Database altered.

SQL> alter database recover managed standby database cancel;

Database altered.

SQL> alter database open;

Database altered.

SQL> alter database recover managed standby database using current logfile disconnect from session;

Database altered.

SQL> *select from t;**

ID

---

 1
 2
 3
 4

SQL>
SQL> select process,status from v$managed_standby;

PROCESS STATUS

---

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

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