This Natural profile parameter specifies information concerning the physical database file to be associated with a logical system file for Software AG products.
It can be used for Software AG products which have their own system files
(for example, Con-nect and Natural Elite) to specify where such a system file
is to be located. Such products use Database ID 255 and a logical
file number (FNR) in their data definition modules (DDMs). With the
LFILE parameter or the macro
NTLFILE, you specify which physical database ID
(DBID) and file number (and, if applicable, password and cipher key) are
associated with that logical file number.
Natural records the physical file information and uses it for any
database calls to Database ID=255 and File
number=logical-ID.
| Possible settings | logical-FNR |
1 - 251 |
Logical file number (LFL). This parameter is mandatory. |
|---|---|---|---|
physical-DBID |
0 - 65535, except
255 |
Physical database ID (DBID). Database ID
255 is reserved for logical system files for Software AG products.
|
|
physical-FNR |
1 -
65535 |
Physical file number (FNR). | |
password |
Must be a setting of 1 to 8 characters. * | ||
cipher-key |
Must be a setting of 8 numeric digits.
*
|
||
options |
RO
|
For read-only access. | |
| Default setting | none | ||
| Dynamic specification | yes | This parameter can
only be specified dynamically. In the Natural parameter module
NATPARM, the
macro NTLFILE
must be used instead. It replaces the old macro NTFILE
for logical system file definition which is still available, but should not be
used any longer.
|
|
| Specification within session | no | ||
| Application Programming Interface | USR0011N |
See
SYSEXT - Natural Application
Programming Interfaces in the
Utilities documentation.
* Recommended. |
|
USR2004N *
|
|||
* Password and cipher key are only required if the database file has been password-protected and/or ciphered using the Adabas security feature.
Anmerkung:
LFILE can also be used to define a so-called
scratch-pad file with logical file number 212; see also the
profile parameter ROSY and refer to
Natural Scratch-Pad
File in the Operations
documentation.
To define different logical files, the LFILE
parameter or the macro NTLFILE
must be specified several times.
The following topics are covered below:
The LFILE parameter is specified as follows:
| LFILE=(logical-FNR,physical-DBID,physical-FNR,password,cipher-key,RO) |
In contrast to the former NTFILE macro which has
keyword subparameters, the NTLFILE macro has positional
subparameters (like the LFILE parameter) and is
specified as follows:
| NTLFILE logical-FNR,physical-DBID,physical-FNR,password,cipher-key,RO |
For compatibility reasons, the old macro NTFILE
is still supported. It is specified as follows:
| NTFILE ID=logical-FNR,DBID=physical-DBID,FNR=physical-FNR,PASSW=password,CIPH=cipher-key,OPT=RO |
LFILE=(180,73,10),LFILE=(251,40,9,TEST99)
Equivalent specification in the Natural parameter module:
NTLFILE 180,73,10 NTLFILE 251,40,9,TEST99
