From Apache Jena version
2.7.x onwards, TDB is now installed as part of a single integrated Jena
package. There is no longer a need to install a separate TDB package to run the TDB command line
tools, or to use TDB in your Java programs. See the downloads page for details on getting the latest Jena
From the location The directory
bin/ contains shell scripts to run the commands
from the command line. The scripts are bash scripts which should work
on Linux systems, Windows systems using Cygwin and
Mac/OS systems. The directory
bat/ contains Windows batch files which
provide the same functionality for Windows systems that are not using
Set the environment variable
JENAROOT to the root of the the Jena
Then set the
PATH to include the
This can be done in
.bashrc, or its equivalent on Mac OS/X, to ensure that the environment
variables are always available.
Setting environment variables in Windows is slightly involved. You can set them each time you start a command prompt:
SET JENAROOT=\Users\somebody\dev\apache-jena SET PATH=%PATH%;%JENAROOT\bin
or you can follow this guide or one like it to set the environment variables so that they are available every time you launch the command prompt.
Each command then has command-specific arguments described below.
All commands support
--help to give details of named and
There are two equivalent forms of named argument syntax:
--arg=val --arg val
TDB has a number of configuration options which can be set from the command line using:
Using tdb: is really a short hand for the URI prefix http://jena.hpl.hp.com/TDB# so the full URI form is
TDB commands use an assembler description for the persistent store
or a direct reference to the directory with the index and node files:
The assembler description follow the form for a dataset given in TDB assembler description page.
If neither assembler file nor location is given,
Bulk loader and index builder. Performans bulk load operations more efficiently than simply reading RDF into a TDB-back model.
Bulk loader and index builder. Faster than
tdbloader but only works
on Linux and Mac OS/X since it relies on some Unix system utilities.
This bulk loader can only be used to create a database. It may overwrite existing data. It only accepts the --loc argument and a list of files to load.
Invoke a SPARQL query on a store. Use
--time for timing
information. The store is attached on each run of this command so
timing includes some overhead not present in a running system.
Details about query execution can be obtained -- see notes on the TDB Optimizer.
Dump the store in N-Quads format.
Produce a statistics for the dataset. See the TDB Optimizer description..