Oracle 10gR2 Dataguard quick question

Hi -
Just a quick question about Oracle 10gR2 Dataguard. I'm in the process of creating dataguard standby, which is running for few hours and could take few more hours because of the size and the standby's network latency, and i'm using OMS to create the DG. I'm in a situation now to create new tablespace(A) and also one more datafile to the existing tablespace(B).
Question is: How would this new tablespace and the new datafile in the existing tablespace affect the DG standby which is about to finish in couple hours? Will the DG pickup the new changes from the primary? Or, will it be done with error from the mismatch of the number of files? The issue is that i can't wait for the standby creation to be done as the additional tablespace and datafile requirement is production critical, and should be added right away.
note: standby_file_management is set to auto.
Thanks for your response.
regards.

Your post is a bit vague, as OMS is an acronym for Oracle Management Server, which is a service only.
If you would have stated you are using Database Control, or RMAN duplicate database, the picture would have been much clearer.
Database Control uses rman duplicate database.
Recovery is the mandatory implicit last step of this procedure to pick up all changes since you started the duplicate.
One word of warning: Network latency is one thing to avoid like hell in a standby configuration.
It might even slow down your production database.
Sybrand Bakker
Senior Oracle DBA

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