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Oracle: redo log file

A redo log file might either be
Oracle (that is: LGWR) writes to one redo log file at a time. This specific log file is called the current log file.

Identification of log files

Each redo log file is assigned a sequence number in every log switch.
Thus, each online and archived log file is uniquely identified by the sequence number.
The history of log files is found in v$log_history.

Redo wastage

select
   value
from
   v$sysstat
where
   name = 'redo wastage';

See also

redo log block

Index

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