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POWith derby/jpa/tomcat, the database is always already booted
 

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  1. POWith derby/jpa/tomcat, the database is always already booted
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    <p>I'm trying to use jpa with tomcat, with Derby. But I get this message : <em>Caused by: ERROR XSDB6: Another instance of Derby may have already booted the database</em>.</p> <p>My persistence.xml is something like that :</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"&gt; &lt;persistence-unit name="contribs" transaction-type="RESOURCE_LOCAL"&gt; &lt;provider&gt;org.eclipse.persistence.jpa.PersistenceProvider&lt;/provider&gt; &lt;exclude-unlisted-classes&gt;false&lt;/exclude-unlisted-classes&gt; &lt;properties&gt; &lt;property name="javax.persistence.jdbc.url" value="jdbc:derby:~/contribs;create=true"/&gt; &lt;property name="javax.persistence.jdbc.password" value="sa"/&gt; &lt;property name="javax.persistence.jdbc.driver" value="org.apache.derby.jdbc.EmbeddedDriver"/&gt; &lt;property name="javax.persistence.jdbc.user" value="sa"/&gt; &lt;property name="eclipselink.ddl-generation" value="create-tables"/&gt; &lt;/properties&gt; &lt;/persistence-unit&gt; &lt;/persistence&gt; </code></pre> <p>I use a <em>ServletContextListener</em>, annotated with <em>@WebListener()</em>. </p> <p>On <em>contextInitialized</em> I get a <em>EntityManagerFactory</em> and an <em>EntityManager</em>, and I close all on <em>contextDestroyed</em>.</p> <p>I see with log tomcat call twice my ServletContextListener (I don't understand why), and the second time I get the error message.</p> <p>Also I use Netbeans.</p> <p>How can I resolve that ? Thanks.</p>
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    1. CODo you have many Host in your server.xml ? Or many Context mapped onto the same web application ?
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      1. USbenjamin.d
    2. COI hope no :-) In my server.xml there is only one Host, and I see no Context. But it's on Netbeans stuff.
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    3. COI don't know NetBeans, but check how tomcat is configured in your netbeans plugin.
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