Display DDM remote file records

 

The Display Physical File Member (DSPPFM) command can be used to display a remote file on a target server.

For performance reasons, however, whenever possible, you should use display station pass-through to sign on the remote server, and display the file directly. When display station pass-through is used, only the display images are transmitted over the communications line. When DDM is used to access the remote file, each record is transmitted separately over the line, which requires many more transmissions.

If pass-through cannot be used (for example, if the remote file is not on an iSeries™ server, a System/38™, or a System/36™, or if pass-through is not configured on your server), direct record positioning rather than relative positioning should be used whenever possible. For example, if record number 100 is being displayed and you want to see record number 200 next, that record is accessed faster if you enter 200 in the control field instead of +100. The results are the same, unless the file contains deleted records.

 

Parent topic:

Other DDM-related functions involving remote files

 

Related concepts

Performance considerations for DDM