DBA_LOGMNR_LOG

All archived logs registered with active logminer persistent sessions.

Columns
   ___________________________
 
   LOGMNR_SESSION_ID
   NAME
   DBID
   RESETLOGS_SCN
   RESETLOGS_TIME
   MODIFIED_TIME
   THREAD#
   SEQUENCE#
   FIRST_SCN
   NEXT_SCN
   FIRST_TIME
   NEXT_TIME
   DICTIONARY_BEGIN
   DICTIONARY_END
   KEEP SUSPECT

Related:

DBA_LOGMNR_SESSION