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| <title>7. Accessing Multiple Databases</title><link rel="stylesheet" href="css/docbook.css" type="text/css"><base href="display"><meta name="generator" content="DocBook XSL Stylesheets V1.72.0"><link rel="start" href="manual.html" title="Apache OpenJPA 2.0 User's Guide"><link rel="up" href="ref_guide_dbsetup.html" title="Chapter 4. JDBC"><link rel="prev" href="ref_guide_dbsetup_sql92.html" title="6. Setting the SQL Join Syntax"><link rel="next" href="ref_guide_dbsetup_retain.html" title="8. Configuring the Use of JDBC Connections"></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">7. |
| Accessing Multiple Databases |
| </th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ref_guide_dbsetup_sql92.html">Prev</a> </td><th width="60%" align="center">Chapter 4. |
| JDBC |
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| Accessing Multiple Databases |
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| Through the properties we've covered thus far, you can configure each |
| <code class="classname">EntityManagerFactory</code> to access a different |
| database. If your application accesses multiple databases, we recommend that you |
| maintain a separate persistence unit for each one. This will allow you to easily |
| load the appropriate resource for each database at runtime, and to give the |
| correct configuration file to OpenJPA's command-line tools during development. |
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| Setting the SQL Join Syntax |
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| Configuring the Use of JDBC Connections |
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