HP DECnet-Plus for OpenVMS Alpha and OpenVMS I64, Version 8.3

HP DECnet-Plus for OpenVMS Alpha and OpenVMS I64, Version 8.3 SPD 50.45.19
Table 2
FTAM Document Types
Document
Type
String Sig-
nificance
Universal
Class
Maximum
String Length
FTAM-1 Not
significant
IA5String
GeneralString
Presence and
absence of
parameter
Fixed VisibleString
GraphicString
Presence of
parameter
Variable VisibleString
GraphicString
Presence and
absence of
parameter
FTAM-2 Not
significant
VisibleString
GraphicString
Presence or
absence of
parameter
FTAM-3 Not
significant
Presence or
absence of
parameter
Fixed Presence of
parameter
NBS-9 files are NBS file directories.
Flexible and Transparent Access for Local Files
FTAM software treats local files the same way that the
OpenVMS operating system file system treats them.
File Transfers
The FTAM COPY command transfers files between
compatible FTAM systems without modifying the source
file. The facility can transfer files in either direction be-
tween the local system and a remote FTAM system.
The COPY command can also transfer files between
two remote FTAM systems for a local FTAM user.
The COPY command also allows you to append one or
more files to a single output file within or between FTAM
systems.
FTAM-DAP Gateway
The FTAM-DAP Gateway lets you perform file opera-
tions from a non-OSI system that supports the DAP pro-
tocol to an OSI system supporting FTAM. Remote users
of the gateway need not establish accounts on the gate-
way system to use its capabilities. The gateway does
not support the APPEND functionality.
File Deletion
The FTAM DELETE command lets you delete one or
more files on any combination of FTAM systems pro-
vided you have delete access to those files on the spe-
cific FTAM system.
Renaming Requests
The FTAM RENAME command allows you to rename
files. The command works on files stored on remote
FTAM systems (remote files). The command enables
you to change the path name or file name of an ex-
isting file. For remote files, you must specify whatever
type of information the remote FTAM system requires
for specifying files.
Directory Requests
The FTAM DIRECTORY command lets you display the
complete set of FTAM file attributes. Specific options al-
low you to vary the display of attributes that are mean-
ingful in an OpenVMS operating system environment,
for example, date and time of the last modification of
file name.
FTAM File Error Recovery
FTAM provides file error recovery functionality, both in
the COPY initiator command and in the FTAM respon-
der. File error recovery is provided for classes 1, 2, and
3 errors as detailed in ISO 8571-4.
Class 1 file error recovery provides only the restart func-
tionality, while classes 2 and 3 provide both the restart
and recovery functionality as follows:
• If an internal error is detected in the data transfer
regime, class 1 recovery restarts the data transfer
regime by retransmitting the file data beginning at
the negotiated checkpoint within the data transfer
regime.
• Class 2 error recovery provides for the re-establishment
of the select and open regimes, and also allows for
the retransmission of file data beginning at a negoti-
ated checkpoint within the data transfer regime.
• Class 3 error recovery provides full recovery by re-
establishing a lost FTAM association and its select
and open regimes. Class 3 recovery then restarts
the data transfer regime by retransmitting the file
data beginning at the negotiated checkpoint within
the data transfer regime.
All restart and recovery operations and procedures are
completely transparent to the user.
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