TDB Command-line Utilities



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 release.


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 Cygwin.

Script set up

The TDB tools are included in the jena toolset. See the command line tools page.

Command line script arguments

Each command then has command-specific arguments described below.

All commands support --help to give details of named and positional arguments.

There are two equivalent forms of named argument syntax:


--arg val

Setting options from the command line

TDB has a number of configuration options which can be set from the command line using:

 --set tdb:symbol=value

Using tdb: is really a short hand for the URI prefix so the full URI form is


TDB Commands

Store description

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, --desc=tdb.ttl is assumed.


tdbloader --loc /path/for/database ...input files ...

Input files can be any RDF syntax; triple formats (e.g. N-Triples, Turtle) are loaded into the default graph, quad formats (e.g. N-Quads, TriG) are loaded into the dataset according to the name or the default graph.

Bulk loader and index builder. Performs 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 requires accepts the --loc argument and a list of files to load e.g.

tdbloader2 --loc /path/for/database input1.ttl input2.ttl ...

Advanced tdbloader2 Usage

There are various other advanced options available to customise the behaviour of the bulk loader. Run with --help to see the full usage summary.

It is possible to do builds in phases by using the tdbloader2data and tdbloader2index scripts separately though this should only be used by advanced users. You can also do this by passing the --phase argument to the tdbloader2 script and specifying data or index as desired.

The indexing phase of the build uses the sort utility to prepare the raw data for indexing, this can potentially require large amounts of disk space and the scripts will automatically check and warn/abort if the disk space looks to be/is insufficient.

If you are building a large dataset (i.e. gigabytes of input data) you may wish to have the PipeViewer tool installed on your system as this will provide extra progress information during the indexing phase of the build.


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..