What files can be excluded from user-managed backup in noarchivelog mode?

what files can be excluded from user-managed backup in noarchivelog mode?
control files,
sqlnet.ora file,
tnsnames.ora,
datafiles associated with read-only tablespaces,
datafiles associated with read/write tablespaces,
of these, what can be excluded and what have to be included?
Thanks.

... and don't forget pfile or spfile... it can help too.
Re: What are generally backed up during the backup?
Nicolas.

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huzaifa wrote:
Hi
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What files can be excluded from user-managed backup in noarchivelog mode?

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