archivelog下不需要热备也能完全恢复损坏或者被删除的datafile(原创)

prerequisite:被删除的表空间创建时开始，一直在archivelog模式下

恢复具体操作如下：
SQL>archiveloglist;
Databaselogmode ArchiveMode
Automaticarchival Enabled
Archivedestination F:/oracle/ora92/RDBMS
Oldestonlinelogsequence 23
Nextlogsequencetoarchive 25
Currentlogsequence 25

SQL>altertablespacebackuptestoffline;
altertablespacebackuptestoffline
*
ERRORatline1:
ORA-01109:databasenotopen

SQL>alterdatabasedatafile'f:/backup.dbf'offline;

Databasealtered.

SQL>alterdatabaseopen;

Databasealtered.

SQL>altertablespacebackuptestofflineimmediate;

Tablespacealtered.

SQL>select*fromv$recover_file;

FILE#ONLINE ONLINE_ERROR CHANGE#TIME
------------------------------------------------------------------------------------------------------------
11OFFLINEOFFLINEFILENOTFOUND 0

SQL>alterdatabasecreatedatafile'f:/backup.dbf'as'f:/backup.dbf';

Databasealtered.

SQL>select*fromv$recover_file;

FILE#ONLINE ONLINE_ERROR CHANGE#TIME
------------------------------------------------------------------------------------------------------------
11OFFLINEOFFLINE 307470603-NOV-041