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<title>Connection</title>
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<meta name="date" content="2010-05-19T8:12:48Z" />
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<meta name="doctitle" content="Connection" />
<meta name="relnum" content="Release 2.3" />
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<div class="sect3"><!-- infolevel="all" infotype="General" -->
<h1>Connection</h1>
<p>The following table lists the properties available in the Connection page of the <a href="ref_persistence_xmll_editor.htm#CIACCHID">persistence.xml Editor</a>.</p>
<div class="tblformal"><a id="sthref260" name="sthref260"></a><a id="sthref261" name="sthref261"></a>
<p class="titleintable">Properties of the Connection Page</p>
<table class="Formal" title="Properties of the Connection Page" summary="This table lists the properties for the persistence.xml editor&rsquo;s connection page." dir="ltr" border="1" width="100%" frame="hsides" rules="groups" cellpadding="3" cellspacing="0">
<col width="24%" />
<col width="*" />
<col width="24%" />
<thead>
<tr align="left" valign="top">
<th align="left" valign="bottom" id="r1c1-t25">Property</th>
<th align="left" valign="bottom" id="r1c2-t25">Description</th>
<th align="left" valign="bottom" id="r1c3-t25">Default</th>
</tr>
</thead>
<tbody>
<tr align="left" valign="top">
<td align="left" id="r2c1-t25" headers="r1c1-t25">
<p>Transaction Type</p>
</td>
<td align="left" headers="r2c1-t25 r1c2-t25">
<p>Specify if the connection for this persistence unit uses one of the following transaction types:</p>
<ul>
<li>
<p><span class="bold">Default</span> -- Select to use the container used by the container.</p>
</li>
<li>
<p><span class="bold">JTA</span> (Java Transaction API) -- Transactions of the Java EE server.</p>
</li>
<li>
<p><span class="bold">Resource Local</span> -- Native actions of a JDBC driver that are referenced by a persistence unit.</p>
</li>
</ul>
</td>
<td align="left" headers="r2c1-t25 r1c3-t25"><br /></td>
</tr>
<tr align="left" valign="top">
<td align="left" id="r3c1-t25" headers="r1c1-t25">
<p>Batch Writing</p>
</td>
<td align="left" headers="r3c1-t25 r1c2-t25">
<p>Specify the use of batch writing to optimize transactions with multiple write operations.</p>
<p>Set the value of this property into the session at deployment time.</p>
<p>Note: This property applies when used both in a Java SE and Java EE environment.</p>
<p>The following are the valid values for oracle.toplink.config.BatchWriting:</p>
<ul>
<li>
<p><span class="bold">JDBC</span>&ndash;Use JDBC batch writing.</p>
</li>
<li>
<p><span class="bold">Buffered</span>&ndash;Do not use either JDBC batch writing nor native platform batch writing.</p>
</li>
<li>
<p><span class="bold">OracleJDBC</span>&ndash;Use both JDBC batch writing and Oracle native platform batch writing.</p>
</li>
<li>
<p><span class="bold">None</span>&ndash;Do not use batch writing (turn it off).</p>
</li>
</ul>
</td>
<td align="left" headers="r3c1-t25 r1c3-t25">
<p>None</p>
</td>
</tr>
<tr align="left" valign="top">
<td align="left" id="r4c1-t25" headers="r1c1-t25">
<p>Statement caching</p>
</td>
<td align="left" headers="r4c1-t25 r1c2-t25"><br /></td>
<td align="left" headers="r4c1-t25 r1c3-t25"><br /></td>
</tr>
<tr align="left" valign="top">
<td align="left" id="r5c1-t25" headers="r1c1-t25">
<p>Native SQL</p>
</td>
<td align="left" headers="r5c1-t25 r1c2-t25"><br /></td>
<td align="left" headers="r5c1-t25 r1c3-t25">
<p>False</p>
</td>
</tr>
<tr align="left" valign="top">
<td align="left" id="r6c1-t25" headers="r1c1-t25">
<p>JTA Data Source Name</p>
</td>
<td align="left" headers="r6c1-t25 r1c2-t25">
<p>If you selected <span class="bold">JTA</span> as the transaction type, then enter the name of the default JTA data source for the persistence unit.</p>
</td>
<td align="left" headers="r6c1-t25 r1c3-t25"><br /></td>
</tr>
<tr align="left" valign="top">
<td align="left" id="r7c1-t25" headers="r1c1-t25">
<p>Non-JTA Data Source Name</p>
</td>
<td align="left" headers="r7c1-t25 r1c2-t25">
<p>If you selected <span class="bold">Resource Local</span> as the transaction type, then enter the name of the non-JTA data source.</p>
<p>This property is not available for projects using the Generic platform.</p>
</td>
<td align="left" headers="r7c1-t25 r1c3-t25"><br /></td>
</tr>
<tr align="left" valign="top">
<td align="left" id="r8c1-t25" headers="r1c1-t25">
<p>&nbsp;&nbsp;Bind&nbsp;Parameters</p>
</td>
<td align="left" headers="r8c1-t25 r1c2-t25">
<p>Control whether or not the query uses parameter binding.</p>
<p>Note: This property applies when used in a Java SE environment.</p>
<p>This property is not available for projects using the Generic platform.</p>
</td>
<td align="left" headers="r8c1-t25 r1c3-t25"><br /></td>
</tr>
<tr align="left" valign="top">
<td align="left" id="r9c1-t25" headers="r1c1-t25">
<p>EclipseLink Connection Pool</p>
</td>
<td align="left" headers="r9c1-t25 r1c2-t25">
<p>Define the connection pool driver, URL, user name and password.</p>
<p>These properties are note available for projects using the Generic platform.</p>
</td>
<td align="left" headers="r9c1-t25 r1c3-t25"><br /></td>
</tr>
<tr align="left" valign="top">
<td align="left" id="r10c1-t25" headers="r1c1-t25">
<p>&nbsp;&nbsp;Read&nbsp;Connection</p>
</td>
<td align="left" headers="r10c1-t25 r1c2-t25">
<p>The maximum and minimum number of connections allowed in the JDBC read connection pool.</p>
<p>Note: These property apply when used in a Java SE environment.</p>
<p>These properties are not available for projects using the Generic platform</p>
</td>
<td align="left" headers="r10c1-t25 r1c3-t25"><br /></td>
</tr>
<tr align="left" valign="top">
<td align="left" id="r11c1-t25" headers="r1c1-t25">
<p>&nbsp;&nbsp;Write&nbsp;Connection</p>
</td>
<td align="left" headers="r11c1-t25 r1c2-t25">
<p>The maximum and minimum number of connections allowed in the JDBC read connection pool.</p>
<p>Note: These property apply when used in a Java SE environment.</p>
<p>These properties are not available for projects using the Generic platform</p>
</td>
<td align="left" headers="r11c1-t25 r1c3-t25"><br /></td>
</tr>
</tbody>
</table>
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