doubt on recovery catalog

[natraj.dba]

I have askted my management to give a separate machine to maintain
recovery database.
Now the probelm is i have 2 different production enviroment
1.oracle 8 on windows
2.oracle 9i on windows
can both oracle 8 and oracle9i database can be installed in the same machine,so that i can maintain catalogs of both version
Plz guide me
Thanks and regards,

[Bore]

1) You do not need to install the DBs on the same machine in order to share the same recovery catalog
2) I am not sure if DBs in different versions can share same recovery catalog

[natraj.dba]

I wish to maintain 2 recovery catalogs
1 for oracle 8
1 for oracle 9i
now if i install one oracle version above other one of the version gets
overwritten
Plz suggest a way

[davey23uk]

you only need one catalog

[Bore]

It is definitely not clear what are you asking and what are you doing.
Pls. explain in more details

[natraj.dba]

(i)I have 9 production database on oracle 8 for which i am using
Recovery Manager: Release 8.0.6.0.0 - Production
(ii)I have 2 production database on oracle 9i for which i am using
Recovery Manager: Release 9.2.0.2.1 - Production

After long discussion i got a machine to maintain rcvcat
now I am going to maintain (i)oracle 8 rcvcat in this new machine

Now my doubt is can i have oracle 9i home so that i can maintain
the catalog of (ii)

[jodie]

(i)I have 9 production database on oracle 8 for which i am using
Recovery Manager: Release 8.0.6.0.0 - Production
(ii)I have 2 production database on oracle 9i for which i am using
Recovery Manager: Release 9.2.0.2.1 - Production

After long discussion i got a machine to maintain rcvcat
now I am going to maintain (i)oracle 8 rcvcat in this new machine

Now my doubt is can i have oracle 9i home so that i can maintain
the catalog of (ii)

Create 1 9i Catalog. It can backup up your 8 and 9i databases. No need to have 2 catalogs.

[natraj.dba]

Thank you sir,
this was haunting me for a very long time
thanks again

[natraj.dba]

As suggested by senior member
i tried to backup oracle 8 db using 9i catalog
I get following error message

C:\>rman catalog rman/rman target=sys/oracle@remote

Recovery Manager: Release 9.2.0.1.0 - Production

Copyright (c) 1995, 2002, Oracle Corporation. All rights reserved.

Recovery Manager incompatible with TARGET database: RMAN 8.0.4 to 8.0.4 required

RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00554: initialization of internal recovery manager package failed
RMAN-06429: TARGET database is not compatible with this version of RMAN

C:\>
Could some one plz help

[Bore]

Well, the problem is you start the RMAN at the rcvcat host.
Go to the database host and issue
rman target / catalog rman/rman@allias
RMAN> register database

And go further