HP 3000 Manuals HP 3000 Manuals
Files and Resources Used
Access Server uses these files and resources as it runs:
* Temporary work space is allocated on disc to store data for loaded
tables. Loaded tables contain current data, extracted from data
sources and formatted into IMAGE tables, file tables, or view
tables as requested. Access Server retrieves the current data and
loads it into a file named Txxxxxxx. As the user performs new
operations against the table, new files are created and the old
ones are purged. If the user does not save the table, the file is
deleted when the user exits. If the user does save the table, the
file is kept, as described below.
* When a PC user saves a result table, the "saved table" definition
is kept in the HDPENV database, while the actual data is kept in
an MPE file in PPCSAVE.HPOFFICE.
The files that store saved table data are named Txxxxxxx, where
Txxxxxxx is a unique alphanumeric name based on the file's
creation date and time. When a user accesses a saved table,
Access Server opens the corresponding Txxxxxxx file. These files
are privileged and under the exclusive control of Access Server.
These files remain on disc until their related table definitions
are deleted.
* Error spoolfiles are created for each user session. The spoolfile
HDSPERR records serious errors with the HDSP server process and
HDSPNSE records serious errors with the HDSPNS server process in
the HP OfficeShare networking environment. If no serious errors
are recorded, all of the spoolfiles are deleted when the session
is terminated. If errors are recorded, the spoolfile is saved.
* Self-describing (SD) files can be created by Access Server. SD
files allow the application to determine the file format as the
application runs. The user defines the file name and location
when creating the file. SD files can be used in HP Listkeeper,
DSG/3000, or HP EasyChart.
* ASCII and DIF (Data Interchange Format) files are created when
requested by the user via the Output Table screen in Access PC.
ASCII files are data files that can be edited by programs like
EDIT/3000. A user extracting data for use in Deluxe VisiCalc/3000
requires a DIF file.
* Binary files (suitable for reading by a COBOL application with no
formatting information, and numeric data) and BRW/IRF (Business
Report Writer) files are also created via the Output Table screen
in Access PC.
* Global and local IAFILEs are used to issue file equations.