DBA_HIST_REPORTS_DETAILS displays details about each report captured in Automatic Workload Repository (AWR). Metadata for each report appears in the DBA_HIST_REPORTS view while the actual report is available in the DBA_HIST_REPORTS_DETAILS view.
ID of the first AWR snapshot that will be taken after this report is generated
Database ID of the current database for the report
Instance number (for an Oracle RAC system)
ID of the captured report
ID of the session corresponding to the captured report (currently used only for SQL Monitor reports)
Session serial number relevant to this report (currently used only for SQL Monitor reports)