One of the redo log members in your database is lost. You queried V$logfile for further details. What would be the member's status?

LOST is not a valid status value defined for the V$LOGFILE STATUS column; Oracle does not use this term to describe missing redo log members.

The STATUS column in V$LOGFILE displays INVALID for any redo log member that Oracle cannot access or that no longer exists on the filesystem. When a member is lost at the OS level, Oracle marks it INVALID in this dynamic performance view to signal the file is inaccessible, allowing a DBA to identify and add a replacement member.

EXPIRED is not a recognized status in V$LOGFILE; this term applies to archived log files within RMAN catalog contexts, not to online redo log members.

DELETED in Oracle contexts refers to backup pieces removed from the RMAN catalog, not the status of a missing online redo log member in V$LOGFILE.

CORRUPT is not a status shown in V$LOGFILE for a missing member; Oracle uses INVALID to describe inaccessible files rather than distinguishing between missing and corrupt states at this view level.

UNKNOWN is not a valid status in V$LOGFILE; the recognized status values are null (file in normal use), INVALID, STALE, and DELETED.

OBSOLETE is an RMAN-specific term describing backup pieces no longer needed by the retention policy and is not a status value used in V$LOGFILE.