Datafile Problem: recover, resetlogs,drop

Fellow Oracle Netters:

I have the following problem:

Enviroment: Solaris8/Oracle9i Enterprise Server, General Purpose Testing Database in Archivelog mode.

1. Firstly, I lost a Hard Drive Containing part of the Archived Logs. (With the oldest SCNs, I still have about 1/2 of the more recent logs).

After part of these archived logs were lost, one of the datafiles, say MyDatafile1.dbf (non-system) needed
recovery, so I have been doing: SQL> recover automatic datafile
'/mypath/MyDatafile1.dbf'; and replies with:

ORA-01179: file /mypath/MyDatafile.dbf does not exist.

I checked /mypath/MyDatafile and the file is there!!!

2)Then I do: SQL> alter database open;
Error ORA-01589: must use RESETLOGS or NORESETLOGS

Then I did: SQL> alter database open NORESETLOGS; ORA-01113: Datafile 11 Needs Media Recovery. ORA-01110: Datafile 11: '/mypath/MyDatafile1.dbf'

If I do again the SQL> recover automatic datafile '/mypath/MyDatafile1.dbf' same response and error
as described above ORA-01179 Datafile doesnt exist.

3)For the sake of continuing my evaluation and testing, it is more important to me to be able to
open this database, so I did:
SQL> alter database datafile '/mypath/MyDatafile1.dbf' drop; and it comes: ORA-01916: Keyword ONLINE, OFFLINE, RESIZE, AUTOEXTEND, or END/DROP expected.

(but the keyword DROP is there!!!)

Eventhough the bad datafile MyDatafile1.dbf is already offline, I also did: SQL> alter database datafile '/mypath/MyDatafile1.dbf' offline drop; and it came:
ORA-0116: Nonexistent Log file, datafile, or temp file
'/mypath/MyDatafile1.dbf'

I would appreciate any ideas/suggestions about how to Drop or Erase this bad datafile and
be able to Open the database.

Thanks in advance,

1. Fuentes 512-297-9937