Oracle 11g Data Guard 增加数据文件时报错，在主库执行的语句如下：

SQL> alter tablespace TS_MIS_DATA add datafile '/oradata1/misdb/TS_MIS_DATA_32.dbf'  SIZE 34351349760   AUTOEXTEND OFF;

SQL> show parameter standby

NAME     TYPE VALUE
------------------------------------ ----------- ------------------------------
standby_archive_dest     string ?/dbs/arch
standby_file_management     string AUTO
备库 ALERT 日志中的报错如下：

Tue Feb 09 17:52:30 2016
Errors in file /u01/app/oracle/diag/rdbms/misdbdg/misdb/trace/misdb_dbw0_16033.trc:
ORA-01186: file 43 failed verification tests
ORA-01157: cannot identify/lock data file 43 - see DBWR trace file
ORA-01111: name for data file 43 is unknown - rename to correct file
ORA-01110: data file 43: '/u01/app/oracle/product/11.2.0/db_1/dbs/UNNAMED00043'
File 43 not verified due to error ORA-01157
MRP0: Background Media Recovery terminated with error 1111
Errors in file /u01/app/oracle/diag/rdbms/misdbdg/misdb/trace/misdb_pr00_26503.trc:
ORA-01111: name for data file 43 is unknown - rename to correct file
ORA-01110: data file 43: '/u01/app/oracle/product/11.2.0/db_1/dbs/UNNAMED00043'
ORA-01157: cannot identify/lock data file 43 - see DBWR trace file
ORA-01111: name for data file 43 is unknown - rename to correct file
ORA-01110: data file 43: '/u01/app/oracle/product/11.2.0/db_1/dbs/UNNAMED00043'
Managed Standby Recovery not using Real Time Apply
Slave exiting with ORA-1111 exception
检查备库文件系统的权限，发现新挂载的盘没有授权，给指定目录授权

chown -R oracle.dba oradata1

授权后，在备库进行日志应用，但依旧报错

ORA-01111: name for data file 43 is unknown - rename to correct file
ORA-01110: data file 43: '/u01/app/oracle/product/11.2.0/db_1/dbs/UNNAMED00043'
ORA-01157: cannot identify/lock data file 43 - see DBWR trace file
ORA-01111: name for data file 43 is unknown - rename to correct file
ORA-01110: data file 43: '/u01/app/oracle/product/11.2.0/db_1/dbs/UNNAMED00043'
Managed Standby Recovery not using Real Time Apply
Slave exiting with ORA-1111 exception

使用 ALTER DATABASE CREATE DATAFILE 命令将报错的数据文件改为正确的数据文件

在备库中执行如下命令：

alter database create datafile  '/u01/app/oracle/product/11.2.0/db_1/dbs/UNNAMED00043'  as  '/oradata1/misdbdg/TS_MIS_DATA_31.dbf';

CREATE DATAFILE 命令的含义是根据控制文件创建一个新的数据文件，来代替原来的数据文件，之后再通过应用日志来对这个数据文件进行介质恢复。

--实时日志应用

ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION;

错误被修复，ALERT 日志中的内容如下：

Media Recovery Log /arch/arch1/misdbdg/1_17845_827421642.dbf
Completed: ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION
Recovery deleting file #43:'/oradata1/misdbdg/TS_MIS_DATA_31.dbf' from controlfile.
Recovery created file /oradata1/misdbdg/TS_MIS_DATA_31.dbf
Successfully added datafile 43 to media recovery