v$sql_plan_statistics_all aggregates information from v$sql_plan, v$sql_plan_statistics and v$sql_workarea and contains statistics for execution plan row sources that require SQL memory for sort or hash join operations. v$sql_plan_statistics_all allows to compare the estimates of the optimzer for an SQL statement with the actual exection figures that the statement had. v$sql_plan_statistics and the structural differences between v$sql_plan_statistics and v$sql_plan_statistics_all.