oracle12c offlineonline表空间数据文件（noarchivelog）

非归档模式下

1、离线数据文件

alter database datafile '/u01/app/oracle/oradata/orcl/cc2.dbf' OFFLINE FOR DROP;

结果显示：

2、使数据文件在线

3、rman介质恢复数据文件8

[oracle@deam orcl]$ rman target /
Recovery Manager: Release 12.1.0.2.0 - Production on Fri Dec 31 15:51:07 2021
Copyright (c) 1982, 2014, Oracle and/or its affiliates.  All rights reserved.
connected to target database: ORCL (DBID=1543646389)
RMAN> recover DATAFILE 8;
Starting recover at 31-DEC-21
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=248 device type=DISK
starting media recovery
media recovery complete, elapsed time: 00:00:00
Finished recover at 31-DEC-21

4、再次online数据文件

5、结果显示