Version 4.2.6 for Mainframes (Update)
 —  Parameter Reference  —

FNAT - Natural System File for System Programs

This Natural profile parameter is used to specify the database ID, file number, password and cipher key and read-only flag for the Natural system file for Natural system programs.

The Natural system file is the database file from which all Natural system programs are retrieved and upon which all system commands operate. Error texts and Natural help information are also contained in this system file.

Possible settings database-ID 1-65535, except 255 Database ID 255 is reserved for logical system files for Software AG products, see profile parameter LFILE.
file-number 1-65535 File number.
password 1 to 8 characters

The password is only required if the Natural system file has been password-protected using the Adabas security feature.

For Natural with VSAM system files: The password is used to specify the logical name (DD or DLBL) of the system file as defined to VSAM. Example: FNAT=(22,5,SYSVSAM)

For further information, see Using Natural with VSAM System Files in the Natural for VSAM documentation.

cipher key 8 numeric digits

The cipher key is only required if the Natural system file has been ciphered using the Adabas security feature.

The cipher key is reserved for future use; currently, it is ignored.

RO

Read-only option.

RO indicates that the Natural system file is "read-only" and is only specified if modifications on the file are to be disabled.
Default setting none
Dynamic specification yes If you specify the FNAT parameter dynamically in conjunction with any of the parameters DBID, FNR, SYSPSW, SYSCIP or ROSY, you must specify the FNAT parameter after any of these parameters.
Specification within session no

The syntax of this parameter is:

FNAT=(database-ID,file-number,password,cipher-key,RO)

Examples:

FNAT=(,8) 
FNAT=(22,5,PASSW2)

Notes:

  1. If any subparameter of the FNAT setting is not specified, the corresponding setting of the parameter DBID, FNR, SYSPSW, SYSCIP or ROSY applies for the Natural system file for system programs.
  2. If you reorganize an FNAT file or if you unload/load data from the FNAT file (for example, by using ADAULD/ADALOD), you must specify USERISN=YES for the ADALOD utility.

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