DBA_LOGSTDBY_HISTORY

Information on processed, active, and pending log Streams.

Columns
   ___________________________
 
   STREAM_SEQUENCE#
   STATUS
      A text string describing the event
   SOURCE
   DBID
   FIRST_CHANGE#
   LAST_CHANGE#
   FIRST_TIME
   LAST_TIME
   DGNAME
   MERGE_CHANGE#
   PROCESSED_CHANGE#

Related:

DBA_LOGSTDBY_SKIP_TRANSACTION
DBA_ROLLING_STATISTICS