Moving Datacom database files with DFDSS (ADRDSSU)

Products

• Datacom
• DATACOM - AD
• Datacom/DB
• Datacom/AD

Issue/Introduction

Can a DATACOM database file be moved to a different disk pack volume using DFDSS (program ADRDSSU)?

 

Environment

Release : All Releases

 

Resolution

DFDSS (ADRDSSU) can be used to move a database file as long as the track geometry of the new device is the same. The device geometry is the track size and number of tracks per cylinder for the device.
3390 devices in 3380 track compatibility mode have the same geometry as 3380 devices. 
In addition, the number of tracks in the file cannot be changed.
The DFDSS options ALLDATA(*) and ALLEXCP need to be used so that a full track copy is performed.
The file must not be in use when moving it so either shut down the Multi-User Facility (MUF) or close the dbid and set ACCESS to the database to OFFline.
The CXX keeps track of the file name so if the file is renamed, a DBUTLY CXXMAINT needs to be run to change the file name in the CXX.

Additional Information

Article 35414- DFDSS and Datacom which has further information on using DFDSS.

Article 30470 - Renaming Datacom database files explains how to rename a Datacom file.