View redo log status

Command

SELECT l.group#, l.thread#, l.sequence#,
       ROUND(l.bytes/1024/1024) AS mb,
       l.members, l.archived, l.status,
       lf.member AS file_path
FROM   v$log l
  JOIN v$logfile lf ON lf.group# = l.group#
ORDER BY l.group#, lf.member;

What it does

Shows the status of redo log groups (CURRENT/ACTIVE/INACTIVE), their sizes, member files and archive status.

When to use it

When reviewing the redo configuration, or to see which group is active before a resize.

Caution

Query only; no risk.