How do you recover a datafile that has not been physically
been backed up since its creation and has been deleted.
Provide syntax example.
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Answer / vineet tyagi
Without Backup Of the Datafile(Excepts System/Active Undo Datafiles)
First Of All,We will take the particular datafile offline.
After that we will create same datafile with same location or another location.Then recover the datafile and online datafile.
Steps:--
1)Alter database datafile <name> offline; (Excepts System/Active undo tablespace related files)
2)Shutdown immediate/abort
3)Startup monut
4)Alter database create datafile <name> With same locatioin and same size; Or
Alter databse create datafile <name> old location to <name> new location with same size;
5)recover database/recover datafile <name>;
6)alter database open
7)alter database datafile online;
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