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db_dump(8) [osf1 man page]

db_dump(8)						      System Manager's Manual							db_dump(8)

NAME

       db_dump, db_dump185 - Reads and writes the security databases (Enhanced Security)

SYNOPSIS

       /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

FLAGS

       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 DB library.  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.  Do not acquire shared
       region locks while searching the database. This option is intended only for debugging and should not be used under any other circumstances.
       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.

DESCRIPTION

       A customized version of the Berkeley Database (Berkeley DB) is embedded in the operating system to provide high-performance  database  sup-
       port  for  critical security files.  The DB includes full transactional support and database recovery, using write-ahead logging and check-
       pointing to record changes.

       The db_dump utility reads the security database file db_file and writes it to the standard output using a portable flat-text format  under-
       stood by the db_load utility.

       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 system administration.  The edauth utility provides a supported means of copying 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 database will  be  damaged  beyond  repair  permitting  neither
       record storage or retrieval.

       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 comparison functions.

RETURN VALUES

       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.

ENVIRONMENT VARIABLES

       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.

FILES

       /var/tcb/files/auth.db

       /var/tcb/files/dblogs/*

RELATED INFORMATION

       Commands: edauth(8), db_load(8) delim off

																	db_dump(8)

Check Out this Related Man Page

db_recover(8)						      System Manager's Manual						     db_recover(8)

NAME

       db_recover - Restores the database to a consistent state (Enhanced Security)

SYNOPSIS

       /usr/tcb/bin/db_recover [-cv] [-h home]

FLAGS

       Failure	was  catastrophic.   Specify  a  home  directory for the database.  The correct directory for enhanced security is /var/tcb/files.
       Write out the pathnames of all of the database log files, whether or not they are involved in active transactions.  Run in verbose mode.

DESCRIPTION

       A customized version of the Berkeley Database (Berkeley DB) is embedded in the operating system to provide high-performance  database  sup-
       port  for  critical security files.  The DB includes full transactional support and database recovery, using write-ahead logging and check-
       pointing to record changes.

       The db_recover utility runs after an unexpected system failure to restore the security database	to  a  consistent  state.   All  committed
       transactions  are  guaranteed  to  appear after db_recover has run, and all uncommitted transactions are completely undone.  DB recovery is
       normally performed automatically for the security files as part of system startup.

       In the case of catastrophic failure, an archival copy, or snapshot of all database files must be restored along with all of the	log  files
       written since the database file snapshot was made.  (If disk space is a problem, log files may be referenced by symbolic links).

       If the failure was not catastrophic, the files present on the system at the time of failure are sufficient to perform recovery.

       If  log	files  are missing, db_recover identifies the missing log files and fails, in which case the missing log files need to be restored
       and recovery performed again.

       The db_recover utility attaches to one or more of the Berkeley DB shared memory regions.  In order to avoid region  corruption,	it  should
       always be given the chance to detach and exit gracefully.  To cause db_recover to clean up after itself and exit, send it an interrupt sig-
       nal (SIGINT).

RETURN VALUES

       The db_recover utility exits 0 on success, and >0 if an error occurs.

ENVIRONMENT VARIABLES

       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.

FILES

       /var/tcb/files/auth.db

       /var/tcb/files/dblogs/*

RELATED INFORMATION

       Commands: db_archive(8), db_checkpoint(8), db_printlog(8), db_dump(8), db_load(8), db_stat(8), secconfig(8) delim off

																     db_recover(8)
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