缺省情况下，使用RMAN备份与恢复界面仅仅显示的是日期，而没有具体的时间。有时候需要查看具体的时间，如查看当天多个Incarnation的情形。对于这个问题，主要是设定环境变量参数NLS_DATE_FORMAT即可，如下文所描述。
1、RMAN日期及时间的缺省格式
robin@SZDB:~> rman target /
Recovery Manager: Release 10.2.0.3.0 - Production on Sat Jun 1 13:54:49 2013
Copyright (c) 1982, 2005, Oracle. All rights reserved.
connected to target database: GOBO1 (DBID=733951103)
RMAN> list incarnation;
using target database control file instead of recovery catalog
List of Database Incarnations
DB Key Inc Key DB Name DB ID STATUS Reset SCN Reset Time
------- ------- -------- ---------------- --- ---------- ----------
1 1 GOBO1 733951103 PARENT 1 18-FEB-09
2 2 GOBO1 733951103 PARENT 79915248 20-SEP-12
3 3 GOBO1 733951103 PARENT 80298787 31-MAY-13
4 4 GOBO1 733951103 CURRENT 80307144 31-MAY-13
RMAN> exit
Recovery Manager complete.
2、修改环境变量对RMAN日期及时间格式进行自定义
robin@SZDB:~> export NLS_DATE_FORMAT='yyyymmdd hh24:mi:ss';
robin@SZDB:~> rman target /
Recovery Manager: Release 10.2.0.3.0 - Production on Sat Jun 1 13:55:30 2013
Copyright (c) 1982, 2005, Oracle. All rights reserved.
connected to target database: GOBO1 (DBID=733951103)
RMAN> list incarnation;
using target database control file instead of recovery catalog
List of Database Incarnations
DB Key Inc Key DB Name DB ID STATUS Reset SCN Reset Time
------- ------- -------- ---------------- --- ---------- ----------
1 1 GOBO1 733951103 PARENT 1 20090218 16:43:43
2 2 GOBO1 733951103 PARENT 79915248 20120920 15:00:44
3 3 GOBO1 733951103 PARENT 80298787 20130531 21:03:41
4 4 GOBO1 733951103 CURRENT 80307144 20130531 22:28:05
--Author :
3、永久修改RMAN日期及时间格式
最佳的办法是将该参书直接添加到.bash_profile
robin@SZDB:~> echo "export NLS_DATE_FORMAT='yyyymmdd hh24:mi:ss'" >> ~/.bash_profile