HP BACKCOPY, Справочное руководство

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When DSAP needs to allocate 500 MB of workspace, it displays "
WARNING: 500MB SPACE
WILL BE REQUIRED
" before proceeding. If the required space is not available, DSAP abends
and displays "
DIRECTORY WORKFILE CREATION/OPEN/MAPPING ERROR: 43. TRY
AGAIN WITH 500MB WORKSPACE
".
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Extent overlaps (double allocated pages) indicate a hardware or software error. A doubly
allocated page is an error condition and occurs when the same page is allocated more than
once to a single file, two different files, or a file and free space. Report such errors to your
service provider.
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Specify a permanent work file only if you want to retain file-label information in
machine-readable form. Using the Enform product or a custom program, you can then generate
additional reports with more complex selection conditions than those offered by DSAP options.
For more information, see the ENFORM User's Guide.
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Free-space extents are usually tracked as disk extents by the free-space table. Allocated-space
extents are tracked by the disk directory. If an extent is not recorded in either place, it is lost.
Lost free space results from a total system failure or a double processor failure.
You can recover lost free space in two ways:
◦
By backing up and restoring system files
◦
By using the SCF CONTROL DISK, REBUILDDFS command (See the SCF Reference Manual
for the Storage Subsystem.)
The simplest method for recovering lost free space is to use REBUILDDFS because it does not
need tapes.
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Because DSAP creates reports about the contents of disk volumes, you can also use it on virtual
volumes (DSAP $L), but some of the report options are ignored (such as any reports that deal
with free disk space). This is similar to DSAP interaction with the USER option.
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DSAP/DCOM have a DSAPCSTM file to customize the DSAP environment. DSAPCSTM file
features are:
◦
You can customize the DSAP environment using the DSAPCSTM file.
◦
You can specify any of the DSAP OPTIONS in the DSAPCSTM file.
◦
The DSAP OPTIONS specified in the DSAPCSTM file are taken as default. That is, the
options in the DSAPCSTM file are appended to the DSAP command which you specify
at the TACL prompt.
◦
The DSAPCSTM file exists in the DEFAULT VOL-SUBVOL of the user running DSAP.
◦
DSAP creates the DSAPCSTM file in your DEFAULT VOL-SUBVOL the first time you run
DSAP or when the file has been purged.
◦
If the DSAPCSTM is already present in your DEFAULT VOL-SUBVOL, DSAP reads
information from this file.
◦
DSAP closes the custom file after reading it.
◦
If you do not own the DSAPCSTM file and its security is OOOO, DSAP options in the file
are not executed and this error message is displayed:
Dsapcstm error 48 encountered as the dsapcstm file does
not belong to user
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DSAP supports SQL format 2 files for SQL/MP.
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DSAP supports up to 4,500,000 files on a single disk volume.
100 Disk Space Analysis Program (DSAP)