| <!DOCTYPE html> |
| <html lang="en"> |
| <head> |
| |
| |
| <title>Apache Jena - TDB2 - Command Line Tools</title> |
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> |
| |
| <link href="/css/bootstrap.min.css" rel="stylesheet" media="screen"> |
| <link href="/css/bootstrap-icons.css" rel="stylesheet" media="screen"><link rel="stylesheet" type="text/css" href="https://jena.apache.org/sass/jena.1b17c39a117e22b46db4c66f6395dc27c134a60377d87d2d5745b8600eb69722.css" integrity="sha256-GxfDmhF+IrRttMZvY5XcJ8E0pgN32H0tV0W4YA62lyI="> |
| <link rel="shortcut icon" href="/images/favicon.ico" /> |
| |
| </head> |
| |
| <body> |
| |
| <nav class="navbar navbar-expand-lg bg-body-tertiary" role="navigation"> |
| <div class="container"> |
| <div class="navbar-header"> |
| <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation"> |
| <span class="navbar-toggler-icon"></span> |
| </button> |
| <a class="navbar-brand" href="/index.html"> |
| <img class="logo-menu" src="/images/jena-logo/jena-logo-notext-small.png" alt="jena logo">Apache Jena</a> |
| </div> |
| |
| <div class="collapse navbar-collapse" id="navbarNav"> |
| <ul class="navbar-nav me-auto mb-2 mb-lg-0"> |
| <li id="homepage" class="nav-item"><a class="nav-link" href="/index.html"><span class="bi-house"></span> Home</a></li> |
| <li id="download" class="nav-item"><a class="nav-link" href="/download/index.cgi"><span class="bi-download"></span> Download</a></li> |
| <li class="nav-item dropdown"> |
| <a href="#" class="nav-link dropdown-toggle" role="button" data-bs-toggle="dropdown" aria-expanded="false"><span class="bi-journal"></span> Learn <b class="caret"></b></a> |
| <ul class="dropdown-menu"> |
| <li class="dropdown-header">Tutorials</li> |
| <li><a class="dropdown-item" href="/tutorials/index.html">Overview</a></li> |
| <li><a class="dropdown-item" href="/documentation/fuseki2/index.html">Fuseki Triplestore</a></li> |
| <li><a class="dropdown-item" href="/documentation/notes/index.html">How-To's</a></li> |
| <li><a class="dropdown-item" href="/documentation/query/manipulating_sparql_using_arq.html">Manipulating SPARQL using ARQ</a></li> |
| <li><a class="dropdown-item" href="/tutorials/rdf_api.html">RDF core API tutorial</a></li> |
| <li><a class="dropdown-item" href="/tutorials/sparql.html">SPARQL tutorial</a></li> |
| <li><a class="dropdown-item" href="/tutorials/using_jena_with_eclipse.html">Using Jena with Eclipse</a></li> |
| <li class="dropdown-divider"></li> |
| <li class="dropdown-header">References</li> |
| <li><a class="dropdown-item" href="/documentation/index.html">Overview</a></li> |
| <li><a class="dropdown-item" href="/documentation/query/index.html">ARQ (SPARQL)</a></li> |
| <li><a class="dropdown-item" href="/documentation/io/">RDF I/O</a></li> |
| <li><a class="dropdown-item" href="/documentation/assembler/index.html">Assembler</a></li> |
| <li><a class="dropdown-item" href="/documentation/tools/index.html">Command-line tools</a></li> |
| <li><a class="dropdown-item" href="/documentation/rdfs/">Data with RDFS Inferencing</a></li> |
| <li><a class="dropdown-item" href="/documentation/geosparql/index.html">GeoSPARQL</a></li> |
| <li><a class="dropdown-item" href="/documentation/inference/index.html">Inference API</a></li> |
| <li><a class="dropdown-item" href="/documentation/ontology/">Ontology API</a></li> |
| <li><a class="dropdown-item" href="/documentation/permissions/index.html">Permissions</a></li> |
| <li><a class="dropdown-item" href="/documentation/extras/querybuilder/index.html">Query Builder</a></li> |
| <li><a class="dropdown-item" href="/documentation/rdf/index.html">RDF API</a></li> |
| <li><a class="dropdown-item" href="/documentation/rdfconnection/">RDF Connection - SPARQL API</a></li> |
| <li><a class="dropdown-item" href="/documentation/rdfstar/index.html">RDF-star</a></li> |
| <li><a class="dropdown-item" href="/documentation/shacl/index.html">SHACL</a></li> |
| <li><a class="dropdown-item" href="/documentation/shex/index.html">ShEx</a></li> |
| <li><a class="dropdown-item" href="/documentation/tdb/index.html">TDB</a></li> |
| <li><a class="dropdown-item" href="/documentation/tdb2/index.html">TDB2</a></li> |
| <li><a class="dropdown-item" href="/documentation/query/text-query.html">Text Search</a></li> |
| </ul> |
| </li> |
| |
| <li class="nav-item dropdown"> |
| <a href="#" class="nav-link dropdown-toggle" role="button" data-bs-toggle="dropdown" aria-expanded="false"><span class="bi-journal-code"></span> Javadoc <b class="caret"></b></a> |
| <ul class="dropdown-menu"> |
| <li><a class="dropdown-item" href="/documentation/javadoc.html">All Javadoc</a></li> |
| <li><a class="dropdown-item" href="/documentation/javadoc/arq/">ARQ</a></li> |
| <li><a class="dropdown-item" href="/documentation/javadoc/fuseki2/">Fuseki</a></li> |
| <li><a class="dropdown-item" href="/documentation/javadoc/geosparql/">GeoSPARQL</a></li> |
| <li><a class="dropdown-item" href="/documentation/javadoc/jena/">Jena Core</a></li> |
| <li><a class="dropdown-item" href="/documentation/javadoc/permissions/">Permissions</a></li> |
| <li><a class="dropdown-item" href="/documentation/javadoc/extras/querybuilder/">Query Builder</a></li> |
| <li><a class="dropdown-item" href="/documentation/javadoc/shacl/">SHACL</a></li> |
| <li><a class="dropdown-item" href="/documentation/javadoc/tdb/">TDB</a></li> |
| <li><a class="dropdown-item" href="/documentation/javadoc/text/">Text Search</a></li> |
| </ul> |
| </li> |
| </ul> |
| <form class="d-flex" role="search" action="/search" method="GET"> |
| <div class="input-group"> |
| <input class="form-control border-end-0 border m-0" type="search" name="q" id="search-query" placeholder="Search...." aria-label="Search" style="width: 10rem;"> |
| <button class="btn btn-outline-secondary border-start-0 border" type="submit"> |
| <i class="bi-search"></i> |
| </button> |
| </div> |
| </form> |
| <ul class="navbar-nav"> |
| <li id="ask" class="nav-item"><a class="nav-link" href="/help_and_support/index.html" title="Ask"><span class="bi-patch-question"></span><span class="text-body d-none d-xxl-inline"> Ask</span></a></li> |
| |
| <li class="nav-item dropdown"> |
| <a href="#" title="Get involved" class="nav-link dropdown-toggle" role="button" data-bs-toggle="dropdown" aria-expanded="false"><span class="bi-megaphone"></span><span class="text-body d-none d-xxl-inline"> Get involved </span><b class="caret"></b></a> |
| <ul class="dropdown-menu"> |
| <li><a class="dropdown-item" href="/getting_involved/index.html">Contribute</a></li> |
| <li><a class="dropdown-item" href="/help_and_support/bugs_and_suggestions.html">Report a bug</a></li> |
| <li class="dropdown-divider"></li> |
| <li class="dropdown-header">Project</li> |
| <li><a class="dropdown-item" href="/about_jena/about.html">About Jena</a></li> |
| <li><a class="dropdown-item" href="/about_jena/architecture.html">Architecture</a></li> |
| <li><a class="dropdown-item" href="/about_jena/citing.html">Citing</a></li> |
| <li><a class="dropdown-item" href="/about_jena/team.html">Project team</a></li> |
| <li><a class="dropdown-item" href="/about_jena/contributions.html">Related projects</a></li> |
| <li><a class="dropdown-item" href="/about_jena/roadmap.html">Roadmap</a></li> |
| <li><a class="dropdown-item" href="/about_jena/security-advisories.html">Security Advisories</a></li> |
| <li class="dropdown-divider"></li> |
| <li class="dropdown-header">ASF</li> |
| <li><a class="dropdown-item" href="https://www.apache.org/">Apache Software Foundation</a></li> |
| <li><a class="dropdown-item" href="https://www.apache.org/foundation/sponsorship.html">Become a Sponsor</a></li> |
| <li><a class="dropdown-item" href="https://www.apache.org/licenses/LICENSE-2.0">License</a></li> |
| <li><a class="dropdown-item" href="https://www.apache.org/security/">Security</a></li> |
| <li><a class="dropdown-item" href="https://www.apache.org/foundation/thanks.html">Thanks</a></li> |
| </ul> |
| </li> |
| |
| |
| |
| |
| <li class="nav-item" id="edit"><a class="nav-link" href="https://github.com/apache/jena-site/edit/main/source/documentation/tdb2/tdb2_cmds.md" title="Edit this page on GitHub"><span class="bi-pencil-square"></span><span class="text-body d-none d-xxl-inline"> Edit this page</span></a></li> |
| </ul> |
| </div> |
| </div> |
| </nav> |
| |
| <div class="container"> |
| <div class="row"> |
| <div class="col-md-12"> |
| |
| <div id="breadcrumbs"> |
|
|
|
|
|
|
|
|
|
|
|
|
| <ol class="breadcrumb mt-4 p-2 bg-body-tertiary">
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| <li class="breadcrumb-item"><a href='/documentation'>DOCUMENTATION</a></li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| <li class="breadcrumb-item"><a href='/documentation/tdb2'>TDB2</a></li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| <li class="breadcrumb-item active">TDB2 CMDS</li>
|
|
|
|
|
|
|
|
|
| </ol>
|
|
|
|
|
|
|
| |
| </div> |
| <h1 class="title">TDB2 - Command Line Tools</h1> |
| |
| |
| <main class="d-flex flex-xl-row flex-column"> |
| |
| <aside class="text-muted align-self-start mb-3 p-0 d-xl-none d-block"> |
| <h2 class="h6 sticky-top m-0 p-2 bg-body-tertiary">On this page</h2> |
| <nav id="TableOfContents"> |
| <ul> |
| <li><a href="#tdb2tdbloader"><code>tdb2.tdbloader</code></a> |
| <ul> |
| <li><a href="#loader-options">Loader options</a></li> |
| </ul> |
| </li> |
| <li><a href="#tdb2tdbstats"><code>tdb2.tdbstats</code></a></li> |
| </ul> |
| </nav> |
| </aside> |
| <article class="flex-column me-lg-4"> |
| <p><em>TDB2 is not compatible with TDB1</em></p> |
| <p>Do not run TDB1 tools on a TDB2 database, nor run TDB2 tools on a TDB1 database.</p> |
| <p>These scripts are available jena binary distribution.</p> |
| <ul> |
| <li><code>tdb2.tdbbackup</code></li> |
| <li><code>tdb2.tdbdump</code></li> |
| <li><code>tdb2.tdbcompact</code></li> |
| <li><code>tdb2.tdbloader</code></li> |
| <li><code>tdb2.tdbquery</code></li> |
| <li><code>tdb2.tdbupdate</code></li> |
| <li><code>tdb2.tdbstats</code></li> |
| </ul> |
| <p>On MS Windows, these commands are called <code>tdb2_tdbquery</code> etc.</p> |
| <p>Example usage:</p> |
| <pre tabindex="0"><code>tdb2.tdbloader --loc <DB location> file1 file2 ... |
| </code></pre><p>Note:</p> |
| <p><code>tdbloader2</code> is a TDB1 command tool.</p> |
| <h2 id="tdb2tdbloader"><code>tdb2.tdbloader</code></h2> |
| <p>Basic usage: load files into a database at location “DB”:</p> |
| <pre><code>tdb2.tdbloader --loc DB file1 file2 .... |
| </code></pre> |
| <p>To load the data into a named graph, use the <code>--graph=IRI</code> argument:</p> |
| <pre><code>tdb2.tdbloader --loc DB --graph=https://example.org/graph#name file1 |
| </code></pre> |
| <p>For the complete syntax and list of all arguments use <code>--help</code>:</p> |
| <pre><code>tdb2.tdbloader --help |
| </code></pre> |
| <p>All TDB2 loaders can update datasets and do not have to work on an empty |
| dataset. However, only the basic and sequential loader are fully |
| transactional in the presence of crashes. The other loaders, while |
| faster, work by manipulating the low-level datastructures, and are tuned |
| for large changes of data. They do not provide perfect transaction |
| isolation in case a load goes wrong for some reason. The multiphase |
| loading operations use partial transactions which can leave the database |
| in a strange state.</p> |
| <p>When working with large data to load, it is advisable to check it |
| completely first with <code>riot --validate</code>. Parse errors during loading can |
| lead to inconsistent indexing. Fixing bad data, even if legal RDF, such |
| as bad lexical forms of literals or bad URIs, is much easier before the |
| data is in the database.</p> |
| <p>Because loading in hardware dependent, the right choice for any |
| situation can only be found by trying each loader to see what works best |
| and the notes below are only initial guidance. The default choice is |
| a reasonable starting point. Closing all applications to release their |
| memory and not use CPU improves the loading process performance.</p> |
| <p>Loading very large datasets (like Wikidata) with tdb2.tdbloader may |
| sometimes on linux configurations fail with errors like:</p> |
| <pre><code>Native memory allocation (mmap) failed to map 65536 bytes for |
| committing reserved memory. |
| </code></pre> |
| <p>This can be avoided by adding a larger value to the <code>vm.max_map_count</code> |
| option. The command <code>sudo sysctl -w vm.max_map_count=262144</code> updates |
| the value for your current session, or you can persist the change by |
| editing the value in <code>/etc/sysctl.conf</code> or in <code>/etc/sysctl.d/*</code> override |
| files if available.</p> |
| <h3 id="loader-options">Loader options</h3> |
| <p>The choice of loader is given by the optional <code>--loader</code> argument.</p> |
| <p><code>--loader=basic</code></p> |
| <p>The basic loader loads data as a single transaction into the dataset on |
| a single thread. It is suitable for small data and also for |
| incrementally adding to a dataset safely, A machine crash while running |
| this loader will not invalidate the database; the load simply will not happen.</p> |
| <p><code>--loader=sequential</code></p> |
| <p>The sequential loader is a single threaded loader that loads the primary |
| index then each of the other indexes. It is suitable only for low resource |
| hardware, especially in a low I/O bandwidth situation.</p> |
| <p><code>--loader=phased</code> (default)</p> |
| <p>The phased loader, the default if no <code>--loader</code> argument is provided, |
| is balance between performance and hardware demands.</p> |
| <p>It used multiple threads for both the initial loading (3 worker threads) |
| and then 2 threads in parallel for building the other indexes.</p> |
| <p><code>--loader=parallel</code></p> |
| <p>The parallel loader runs all operations at once. It can deliver the best |
| performance providing enough RAM is available and the persistent storage |
| is SSD. It can consume all hardware resources, greatly impacting |
| any other applications running.</p> |
| <h2 id="tdb2tdbstats"><code>tdb2.tdbstats</code></h2> |
| <p>Produce statistics for the dataset, which can be used for optimization rules. See the |
| <a href="../tdb/optimizer.html#statistics-rule-file">TDB Optimizer description.</a>.</p> |
| <p>For TDB2 the statistic files is read and placed in the <code>Data-NNNN</code> directory (<code>Data-0001/stats.opt</code>).</p> |
| |
| </article> |
| |
| <aside class="text-muted align-self-start mb-3 mb-xl-5 p-0 d-none d-xl-flex flex-column sticky-top"> |
| <h2 class="h6 sticky-top m-0 p-2 bg-body-tertiary">On this page</h2> |
| <nav id="TableOfContents"> |
| <ul> |
| <li><a href="#tdb2tdbloader"><code>tdb2.tdbloader</code></a> |
| <ul> |
| <li><a href="#loader-options">Loader options</a></li> |
| </ul> |
| </li> |
| <li><a href="#tdb2tdbstats"><code>tdb2.tdbstats</code></a></li> |
| </ul> |
| </nav> |
| </aside> |
| </main> |
| |
| </div> |
| </div> |
| </div> |
| |
| <footer class="bd-footer py-4 py-md-5 mt-4 mt-lg-5 bg-body-tertiary"> |
| <div class="container" style="font-size:80%" > |
| <p> |
| Copyright © 2011–2024 The Apache Software Foundation, Licensed under the |
| <a href="https://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>. |
| </p> |
| <p> |
| Apache Jena, Jena, the Apache Jena project logo, Apache and the Apache feather logos are trademarks of |
| The Apache Software Foundation. |
| <br/> |
| <a href="https://privacy.apache.org/policies/privacy-policy-public.html" |
| >Apache Software Foundation Privacy Policy</a>. |
| </p> |
| </div> |
| </footer> |
| |
| <script src="/js/popper.min.js.js" type="text/javascript"></script> |
| <script src="/js/bootstrap.min.js" type="text/javascript"></script> |
| <script src="/js/improve.js" type="text/javascript"></script> |
| |
| <script type="text/javascript"> |
| (function() { |
| 'use strict' |
| |
| |
| |
| const links = document.querySelectorAll(`a[href="${window.location.pathname}"]`) |
| if (links !== undefined && links !== null) { |
| for (const link of links) { |
| |
| link.classList.add('active') |
| let parentElement = link.parentElement |
| let count = 0 |
| const levelsLimit = 4 |
| |
| |
| |
| |
| |
| while (['UL', 'LI'].includes(parentElement.tagName) && count <= levelsLimit) { |
| if (parentElement.tagName === 'LI') { |
| |
| |
| |
| parentElement.querySelector('a:first-child').classList.add('active') |
| } |
| parentElement = parentElement.parentElement |
| count++ |
| } |
| } |
| } |
| })() |
| </script> |
| |
| </body> |
| </html> |
