Does Oracle write to data files in begin/hot backup mode? (for DBA

Does Oracle write to data files in begin/hot backup mode?
(for DBA
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1 Answer

Answer :

Oracle will stop updating file headers, but will continue to write data to
the database files even if a tablespace is in backup mode.In backup mode, Oracle will write out complete changed blocks to the
redo log files. Normally only deltas (changes) are logged to the redo
logs. This is done to enable reconstruction of a block if only half of it
was backed up (split blocks). Because of this, one should notice
increased log activity and archiving during on-line backups.
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