Online Documentation for SQL Manager for Oracle
The System Statistics tab displays the system statistics; all stats are grouped into classes - Cache, Debug, Enqueue, RAC (Real Application Clusters), RAC & Cache, Redo, SQL, SQL & Cache, User.
The list displays items of system statistics as a grid with the following columns: Name, Value. If more convenient, you can change the order of the columns by dragging their headers horizontally.
If necessary, you can group the data in grid by any of the columns. This operation is performed by dragging the column header to the gray "Group by" box area at the top. When grouping by a column is applied to the grid, all the rows are displayed as subnodes to the grouping row value. To reverse grouping, just drag the column header back.
Click a column caption to sort items by values of this column in the ascending or the descending mode.