/I#Berkeley DB: db_dump[P

db_dump





/db_dump [-dN] [-f output] db_file?db_dump [-p] [-f output] [-h home] db_file1db_dump185 [-p] [-f output] db_file




Description



>The db_dump utility reads the database file db_file andMwrites it to the standard output using a portable flat-text format understood=by the db_load utility.IThe argument db_file must be a file produced using the Berkeley DBlibrary functions.

^The db_dump185 utility is similar to the db_dump utilityNexcept that it reads databases in the format used by Berkeley DB versions 1.85 and 1.86.

The options are as follows:

a

-d
Dump the specified database in a format helpful for debugging the Berkeley DBlibrary routines.IThe output format of the -d option is not standard and may change,@without notice, between releases of the Berkeley DB library.Y

-f
Write to the specified file instead of to the standard output.>

-h
Specify a home directory for the database.CAs Berkeley DB versions before 2.0 did not support the concept of aWdatabase home, db_dump185 does not support this option.S

-N
Don't acquire shared region locks while searching the database.GThis option is intended only for debugging and should not be used underany other circumstances.Y

-p
If characters in either the key or data items are printing charactersF(as defined by isprint (3)), use printing characters in file toGrepresent them. This option permits users to use standard text editors.and tools to modify the contents of databases.


HNote, different systems may have different notions as to what charactersBare considered printing characters, and databases dumped in5this manner may be less portable to external systems.

IDumping and reloading hash databases that use user-defined hash functions@will result in new databases that use the default hash function.NWhile using the default hash function may not be optimal for the new database,#it will continue to work correctly.

EDumping and reloading btree databases that use user-defined prefix orFcomparison functions will result in new databases that use the default prefix and comparison functions.BIn this case, it is quite likely that the database will be damagedAbeyond repair permitting neither record storage or retrieval.

FThe only available workaround for either case is to modify the sourcesIfor the db_load utility to load theAdatabase using the correct hash, prefix and comparison functions.

GThe db_dump185 utility may not beGavailable on your system as it is not always built when the Berkeley DB&libraries and utilities are installed.GIf you are unable to find it, see your system administrator for further information.

WThe db_dump and db_dump185 utility output formatsare documented in the=Dump Output Formatssection of the Reference Guide.

BThe db_dump utility exits 0 on success, and >0 if an error occurs.

kThe db_dump185 utility exits 0 on success, and >0 if an error occurs.



Environment Variables





DB_HOME
EIf the -h option is not specified and the environment variableIDB_HOME is set, it is used as the path of the database home, as described8in db_appinit.




See Also

4db_archive,:db_checkpoint,6db_deadlock,db_dump,.db_load,4db_recover,and.db_stat.
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