H06.06 Software Installation and Upgrade Guide
Overview of Installing the H06.06 RVU
H06.06 Software Installation and Upgrade Guide—542652-002
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OSS
purging the files. However, the files can be accessed from the Guardian
environment by using Enscribe.
Note that files smaller than 2 GB that were converted to Format 2 on H06.06
appear initially to most utilities (except DSAP/DCOM T9543H01^ABH) as zero-size
Format 2 files after fallback. When the files are accessed for the first time after the
fallback, they are converted to Format 1 and show their actual size.
If the DP2 fallback SPR is not installed, you cannot access any Format 2 files, even if
they are smaller than 2 GB, on a pre-H06.05 system using either OSS or Enscribe.
DSAP/DCOM
Migration
The DSAPDDL file is changed in the product revision of DSAP/DCOM delivered in the
H06.06 RVU (T9543H01^ABH), resulting in changes to the work-file layout. You must
use the DSAPDDL file distributed with T9543H01^ABH when running ENFORM
queries on the work file created using this SPR. The DSAPDDL file for T9543H01^ABH
contains these changes to the directory-record structure:
•
The field named fifth is changed from type binary unsigned to type binary 32
unsigned.
•
These fields are added to the end of the structure:
°
Field flab2_flags1 of type binary unsigned identifies OSS files larger than 2
GB.
°
Field ext-0-fsu of type binary unsigned contains the extent size of large
OSS files for extent number 0.
°
Field ext-1-128-fsu of type binary unsigned contains the extent size of
large OSS files for extent number 1-128.
Fallback
The H06.06 version of DSAP/DCOM (T9543H01^ABH) is large OSS file safe, but pre-
H06.06 versions are not. If you fall back from H06.06 to an earlier RVU, HP
recommends that you install T9543H01^ABH after the fallback.
DP2 has a dependency on DSAP/DCOM. If you install the DP2 fallback SPR
(T9053AQM), you must also install T9543H01^ABH.
Note. An application that is “large file safe” causes no data loss or corruption when it
encounters an OSS file larger than 2 GB. It may not necessarily have the capability to process
OSS files larger than 2 GB, but it has the appropriate logic to handle errors or warnings
detected during file manipulation operations and fail gracefully.