Setting preferences for MVS Files subsystems

Use the MVS Files page to set preferences for the MVS Files subsystem in the Remote Systems view.

Procedure

To set preferences for MVS Files:

To open the MVS Files preference page, click Window > Preferences, then expand Remote Systems > z/OS and click MVS Files.
Use the MVS Files page to set the following preferences¹:
Large Partitioned Data Set The options in this area determine how large partitioned data sets are handled in the Remote Systems view.²
- Show warning message on expansion: Select this check box to display a warning message when expanding large partitioned data sets, which can take a long time.
- Maximum number of members expanded without warning: If you select the Show warning message on expansion option, use this field to set the number of members to allow before the warning is displayed. The default value is 5000.
- Maximum results for Find Member: Specify the maximum number of search results to return with the Find Member action. The default value is 1000 members.
Generation Data Set Label: There are two options for displaying generation data sets:
- Absolute generation and version numbers (Relative generation number): Shows the absolute generation and version numbers followed by the relative generation number, such as G0005V00(-1).
- Relative generation number (Absolute generation and version numbers): Shows the relative generation number followed by the absolute generation and version number, such as -1(G0005V00).
Sort Order for Data Sets: The options in this area determine the order of data sets in the Remote Systems view ³:
- By type: Select this option to list partitioned data sets followed by sequential data sets.
- By name: Select this option to list all data sets in alphabetical order, regardless of data set type.
Default expansion page size for filters and data sets: Specify the number of data sets or data set members to show in the Remote Systems view when you expand a filter or partitioned data set. All other entries remain hidden until you bring them into view. You can override this number for a particular filter or data set. The default value is 50.

Show warning message on deleting alias: Select this check box to display a warning message when you delete a data set alias.

Process member aliases on module copy: Select this check box to enable the primary load module and all its aliases to be copied together.

Show warning when number of returned data sets exceeds limit: Select this check box to display a warning message when the number of results that MVS data set filters return exceeds limit.

Show members with non-standard name: Select this check box to enable the Remote Systems view to display members with lowercase names or names containing nonstandard character sets. This option is disabled by default.

Enable editing of files with control codes: Select this check box to allow MVS text files that contain control codes to be opened in edit mode. When this check box is selected, UTF-8 is used as the default local code page mapping for new connections. Connections that exist are not affected.
Default action for opening MVS files: Choose the action to be executed when you double-click a sequential data set name or partitioned data set member name in the Remote Systems view:
- Open - Opens the file for editing in the default editor. This setting is the default.
- View - Opens the file for editing, without locking the file, in the default editor.
- Browse - Opens the file in read-only mode in the default editor.
For more information about each of these actions, see the related topics.
Restriction: Dragging a file from the Remote Systems view to the editor opens the file in edit mode in the default editor that is associated with the file extension. Setting the Default action for opening MVS Files preference does not change this behavior.
Default action for opening copybooks: Choose the action to be executed when you double-click a copybook name or choose the Open Declaration action for a copybook.

Enable logical NOT symbol conversion in COBOL source: Select this check box to specify an alternative logical NOT symbol for COBOL files. This preference is disabled by default.

Lock sequential data sets when in browse mode: Select this check box to emulate the ISPF locking behavior for sequential data sets in browse mode.

¹ For IDz users, you can also set preferences for Show missing property group warning message on opening files. For more information, search for Setting preferences for MVS™ Files subsystems in IDz KC.

² For IDz users, you can also see the following options in this area:

Show warning message on adding to subproject: Select this check box to display a warning message when adding large partitioned data sets to a subproject.
Maximum number of members added to subproject without warning: If you select the Show warning message on adding to subproject option, use this field to set the number of members to allow before the warning is displayed. The default value is 50.

³ For IDz users, this area also determines the order of data sets in the z/OS Projects view.