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| <title>9. Empress</title><base href="display"><link rel="stylesheet" type="text/css" href="css/docbook.css"><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><link rel="home" href="manual.html" title="Apache OpenJPA 2.3 User's Guide"><link rel="up" href="supported_databases.html" title="Appendix 2. Supported Databases"><link rel="prev" href="dbsupport_db2.html" title="8. IBM DB2"><link rel="next" href="dbsupport_h2.html" title="10. H2 Database Engine"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">9. |
| Empress |
| </th></tr><tr><td width="20%" align="left"><a accesskey="p" href="dbsupport_db2.html">Prev</a> </td><th width="60%" align="center">Appendix 2. |
| Supported Databases |
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| Empress |
| </h2></div></div></div><div class="toc"><dl><dt><span class="section"><a href="dbsupport_empress.html#dbsupport_empress_issues">9.1. |
| Known issues with Empress |
| </a></span></dt></dl></div> |
| |
| <div class="example"><a name="example_props_empress"></a><p class="title"><b>Example 2.5. |
| Example properties for Empress |
| </b></p><div class="example-contents"> |
| |
| <pre class="programlisting"> |
| openjpa.ConnectionDriverName: empress.jdbc.empressDriver |
| openjpa.ConnectionURL: jdbc:empress://SERVER=yourserver;PORT=6322;DATABASE=yourdb |
| </pre> |
| </div></div><br class="example-break"> |
| <div class="section" title="9.1. Known issues with Empress"><div class="titlepage"><div><div><h3 class="title" id="dbsupport_empress_issues">9.1. |
| Known issues with Empress |
| </h3></div></div></div> |
| |
| <div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"> |
| <p> |
| Empress enforces pessimistic semantics (lock on |
| read) when not using <code class="literal">AllowConcurrentRead</code> property (which |
| bypasses row locking) for <code class="classname">EmpressDictionary</code>. |
| </p> |
| </li><li class="listitem"> |
| <p> |
| Only the category 2 non-local driver is supported. |
| </p> |
| </li></ul></div> |
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| IBM DB2 |
| </td><td width="20%" align="center"><a accesskey="h" href="manual.html">Home</a></td><td width="40%" align="right" valign="top"> 10. |
| H2 Database Engine |
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