Re: Is DATAFILE order important in CREATE CONTROLFILE?

Rick,
 I believe the order of the datafiles in the BACKUP CONTROLFILE TO TRACE comes from the file# in V$DBFILE. If you select from v$dbfile there is no guarantee the list will be in order of the file# and the file# is not the order in which the datafiles were created. Ron
ROR mª¿ªm

>>> Rick_Cale_at_teamhealth.com 04/11/02 04:03PM >>>

Order of files in alter system backup... does not matter. Wow using Perl
to do this when then procedure is documented a 1000 times over. I am sure
you have some very good reason. Automating something that I would think is
not very frequent may be overkill. Oh well enjoy.

Rick

                                                                       
                                             
                    "Jesse, Rich"                                      
                                             
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                    Sent by:               Subject:     Is DATAFILE
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                    04/11/2002                                         
                                             
                    03:13 PM                                           
                                             
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I'm writing a Perl script to automate the procedure to create a copy of an
8.1.7 production DB to a development server. Both production and dev are
HP/UX 11.0.

In doing this, I've created a file that cross-references where the production datafiles are and where they are to be placed in dev. This works
fine, but I also wanted to dynamically create the CREATE CONTROLFILE statement for the "new" dev DB.

I've noticed that the DATAFILE clause does not have the SYSTEM tablespace's
datafile first, nor are any of the other datafiles in the same order that
they are in production (e.g. from the output of an ALTER SYSTEM BACKUP CONTROLFILE TO TRACE). Does this matter? Does the order need to be preserved?

I suppose I'll end up dynamically creating the cross-reference file, which
would preserve the order, but now I'm curious.

TIA!

Rich Jesse                           System/Database Administrator
Rich.Jesse_at_qtiworld.com              Quad/Tech International, Sussex,

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