File-Specific Maintenance

Standard maintenance functions applying to files as well as to most other types of Predict Objects are described in the section Maintenance in the Predict Reference documentation.

File-specific maintenance functions and aspects of standard maintenance functions specific to files are described below.

Purge File

The following files cannot be purged with the Delete command.

  • all SAG-owned file objects

  • Files of type I (IMS segment). Files of type I can be purged by scratching the IMS database (type I) containing the file.

The following objects are purged if you confirm this function:

  • the file and all its userviews

  • all fields of the file and its userviews

  • generated code of the file and userview

  • all links to databases

  • all links from the file to children/from parents

  • all links from/to objects that are also purged with this function.

In addition,

  • all file relations using this file are set to D (documented).

When an Adabas file is purged, all Adabas attributes and Vista elements of the file are also deleted.

Note:
A file cannot be deleted if a DDM for the file exists or the file is implemented.