Version 7.4.3
 —  Delta Save Facility Administration  —

ADARUN Parameter DSF

The ADARUN parameter DSF specifies the Delta Save operation mode. For more information about ADARUN parameters, see the Adabas Operations documentation.

Parameter Use Possible Values Default
DSF Specifies Delta Save mode YES|NO NO

This parameter is only valid if the Delta Save Facility is installed on your system. If Delta Save is not installed in the system, specifying this parameter may cause an error.

Value Meaning
YES Run this nucleus or utility (as specified in the ADARUN PROGRAM parameter) in Delta Save mode. This enables Delta Save functions such as installing or removing the DLOG area, performing Delta Save operations, or merging full and/or delta save tapes. Specifying DSF=YES causes certain Delta Save program modules to be loaded.
NO Run this nucleus or utility in non-Delta Save mode. If DSF=NO (the default) is specified or the parameter is omitted, Delta Save functions cannot be performed. For the nucleus, specifying DSF=NO after specifying DSF=YES switches from Delta Save to non-Delta Save mode. If a DLOG area is defined when the nucleus is started, and DSF=NO is specified, the nucleus removes the DLOG area. If a DLOG area is defined when the nucleus is started, the DSF parameter may not be omitted. You can also remove the DLOG area from the database using the "Remove DSF" command (see the section Removing Delta Save Logging).

Example:


  ADARUN PROG=ADANUC,DSF=YES

Run the nucleus in Delta Save mode; Delta Save-related functions can be performed.

DSF=YES is required for the nucleus and for Delta Save functions of the ADASAV and ADARES utilities; it is optional for the other functions and utilities.

Note:
If a DLOG area is defined when the nucleus is started, the DSF parameter may not be omitted.

DSF=YES is required for

Examples of functions and utilities for which DSF=YES is optional include

* Full save tapes (merged or unmerged) are restored with the normal "RESTORE database" function. In this case:

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