db_dump, db_dump185 - Reads and writes the security databases (Enhanced
/usr/tcb/bin/db_dump [-dN] [-f output] db_file
/usr/tcb/bin/db_dump [-p] [-f output] [-h home] db_file
/usr/tcb/bin/db_dump185 [-p] [-f output] db_file
-d Dump the specified database in a format helpful for debugging the
Berkeley DB library routines. The output format of the -d option is not
standard and may change without notice between releases of the Berkeley
Write to the specified file instead of to the standard output
Specify a home directory for the database. The correct directory for
enhanced security is /var/tcb/files.
-N Do not acquire shared region locks while searching the database. This
option is intended only for debugging and should not be used under any
-p If characters in either the key or data items are printing characters
(as defined by isprint, use printing characters in file to represent
them. This option permits users to use standard text editors and tools
to modify the contents of databases.
A customized version of the Berkeley Database (Berkeley DB) is embedded in
the operating system to provide high-performance database support for crit-
ical security files. The DB includes full transactional support and data-
base recovery, using write-ahead logging and checkpointing to record
The db_dump utility reads the security database file db_file and writes it
to the standard output using a portable flat-text format understood by the
The db_dump and db_dump185 utilities are included in Tru64 UNIX for use by
installation and update utilities, and are not recommended for use by sys-
tem administration. The edauth utility provides a supported means of copy-
ing records from the security databases.
Earlier versions of Tru64 UNIX used Version 1.85 of the Berkeley DB for
enhanced security databases. So the db_dump185 utility, which is similar to
the db_dump utility except that it reads databases in the format used by
Berkeley DB Versions 1.85 and 1.86, is included with Tru64 UNIX.
Dumping and reloading hash databases that use user-defined hash functions
will result in new databases that use the default hash function. While
using the default hash function may not be optimal for the new database, it
will continue to work correctly.
Dumping and reloading btree databases that use a user-defined prefix or
comparison functions results in new databases that use the default prefix
and comparison functions. In this case, it is quite likely that the data-
base will be damaged beyond repair permitting neither record storage or
The only available workaround for either case is to modify the sources for
the db_load utility to load the database using the correct hash, prefix and
The db_dump utility exits 0 on success, and >0 if an error occurs.
The db_dump185 utility exits 0 on success, and >0 if an error occurs.
DB_HOME If the -h option is not specified and the environment variable
DB_HOME is set, it is used as the path of the database home. The
home directory for security is /var/tcb/files.
Commands: edauth(8), db_load(8)