Specifying the editor session mode: "normal mode" or "large mode"
The FM/Db2 editor can operate in either "normal mode" or "large mode".
- Normal mode
- To operate the FM/Db2 editor session in "normal mode", enter a
value other than 0, *, or ALL in the Row count field
on the editor entry panel. The FM/Db2 editor retrieves rows from the Db2® object and loads them into the editor until one of these conditions occurs:
- The end of the Db2® object is reached.
- The number of rows loaded into the editor equals the value specified in the Row count field.
- Available storage is exhausted.
For information about the amount of storage used by the FM/Db2 editor to store each row, see Storage considerations.
For information about limiting the number of rows loaded into an editor session, see Restricting the rows to view by specifying row selection criteria.
- Large mode
- To operate the FM/Db2 editor session in "large mode", enter
0,*, orALLin the Row count field on the editor entry panel. The FM/Db2 editor retrieves rows from the Db2® object and loads them into the editor until one of these conditions occurs:- The end of the Db2® object is reached.
- Approximately three screen's worth of rows has been loaded.
The number of rows displayed on the editor data panel (in tabular format) depends on the terminal emulation settings (24x80, 27x132, 40x132, and so on) and also the number of optional columns headers.
In "large mode", the FM/Db2 editor keeps only enough rows in memory to satisfy the current display requirements. You can scroll up or down as required to see all rows of the Db2® object.
In an Edit session in "large mode", the FM/Db2 editor also keeps any rows that have been changed in memory, regardless of the current display position. This can increase the storage requirement for the Edit session substantially if many rows are changed. For more information about limiting the number of rows loaded into an editor session, see Restricting the rows to view by specifying row selection criteria.