RMAN中什么样的数据文件才是unrecoverable的？

RMAN中什么样的数据文件才是unrecoverable的？

存在不能用重做日志进行恢复的表或索引等对象的数据文件，在RMAN中即会被列为unrecoverable。


创建一个unrecoverable的数据文件：

create table scott.dept2 tablespace users as select * from scott.dept;

alter table scott.dept2 nologging;

insert /*+ APPEND */ into scott.dept2  select * from scott.dept;

RMAN> report unrecoverable;

Report of files that need backup due to unrecoverable operations
File Type of Backup Required Name
---- ----------------------- -----------------------------------
4    full                    D:\DATA10G\ORCL\USERS01.DBF


REF:
1. Oracle: What is an Unrecoverable Data File?
http://www.pythian.com/news/7401/oracle-what-is-an-unrecoverable-data-file/