Trying to recover metadata from a lost DB

Hi:
We lost a DB instance and cannot recover. Ops replaced the broken disks and restored datafiles from backup, but "recover datafile..." for a specific datafile fails with OAR-01113 (file 89 needs media recovery). It calls for a file called arch1_120544.dbf which it (and I) cannot find.
Anyway....
What I'd really like to do at this point is to salvage the metadata. Is there a way to do this without starting the instance? Can I drop the problem datafile (and if necessary, the associated tablespace) somehow and then start the instance without it/them?
Thanks!

Nope, not yet...
SVRMGR> shutdown immediate;
ORA-01109: database not open
Database dismounted.
ORACLE instance shut down.
SVRMGR> startup open pfile = "/odb0/oracle_projects/devodb/initdevodb.ora";
ORACLE instance started.
Total System Global Area 604451812 bytes
Fixed Size 103396 bytes
Variable Size 111763456 bytes
Database Buffers 491520000 bytes
Redo Buffers 1064960 bytes
Database mounted.
ORA-01113: file 89 needs media recovery
ORA-01110: data file 89: '/odb24/devodb/indexes/devodb_imp_idx_huge.dbf'
SVRMGR> alter database datafile '/odb24/devodb/indexes/devodb_imp_idx_huge.dbf' offline;
alter database datafile '/odb24/devodb/indexes/devodb_imp_idx_huge.dbf' offline
ORA-01145: offline immediate disallowed unless media recovery enabled
SVRMGR>

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ORA-17628: Oracle error 19505 returned by remote Oracle server
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hi.
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yes, it ain't the right way to restore backup to primary location.
so how would i connect to standby database with primary and recovery catalog.
i need to connect to recovery catalog and primary site because i need to restore to primary location and recovery catalog contain all metadata and backupsets related information.
i also tried the following steps from oracle documentation.
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CONNECT TARGET sys@standby
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target database Password: password
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CONNECT AUXILIARY sys@primary
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DBF
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
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getting this error.

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Forum: Warehouse Builder
Warehouse Builder
as they will be able to help with the OWB side of the problem.
Regards,
Mike

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Nope, not yet...
SVRMGR> shutdown immediate;
ORA-01109: database not open
Database dismounted.
ORACLE instance shut down.
SVRMGR> startup open pfile = "/odb0/oracle_projects/devodb/initdevodb.ora";
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Database Buffers 491520000 bytes
Redo Buffers 1064960 bytes
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Trying to recover metadata from a lost DB

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