Utility Functions › PDS Utilities Sub-Menu › Compress PDS › Field Descriptions - Compress PDS

Field Descriptions - Compress PDS

Specify PDS to be compressed

Data set name

Type the DSN of the PDS that is to be compressed.

To facilitate selection of the desired DSN, you can use any of the following syntaxes:

• Wildcarded DSN containing an asterisk (*) or a percent sign (%) for unknown characters of the DSN
• D to request a directory of DSN Lists
• D dddddd where 'dddddd' is the name of a DSN list

Optional – create a backup file before compressing

Create backup?

Type Y or N to indicate whether a copy of the PDS is to be created prior to the start of the compress.

New PDS DSN

To specify the DSN for the backup copy of the PDS being compressed, type the DSN in this field. The DSN specified must not already be on the catalog because the compress process creates a new backup PDS.

Tip: It is usually simpler to leave this field blank and let the DSN of the Backup PDS be calculated for you.

The calculated DSN contains the DSN of the PDS being compressed. According to your user profile, your user ID may be appended to the front of the calculated DSN. This option in the user profile is set with the Userid Prefix for Backup PDSs? field of the Processing Defaults and Job Statement Screen (CA File Master Plus Option 0.1). A qualifier is added to the end of the calculated DSN to indicate that it is a backup PDS and this qualifier may contain a sequence number if the calculated DSN has already been used. The part of the calculated DSN that contains the DSN of the PDS being compressed can be truncated to make room for the prefix or suffix.

Note: Since any DSN typed must be for a data set that does not currently exist, wildcard and DSN List support is not available for this field.