100 lines
6.8 KiB
HTML
100 lines
6.8 KiB
HTML
|
<?xml version="1.0" encoding="UTF-8"?>
|
|||
|
|
<!DOCTYPE html
|
|||
|
|
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
|||
|
|
<html lang="en-us" xml:lang="en-us">
|
|||
|
|
<head>
|
|||
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
|||
|
|
<meta name="security" content="public" />
|
|||
|
|
<meta name="Robots" content="index,follow" />
|
|||
|
|
<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
|
|||
|
|
<meta name="DC.Type" content="reference" />
|
|||
|
|
<meta name="DC.Title" content="Enhancements to IBM Toolbox for Java JDBC support for V5R4" />
|
|||
|
|
<meta name="abstract" content="Several JDBC functions were enhanced for i5/OS Version 5 Release 4." />
|
|||
|
|
<meta name="description" content="Several JDBC functions were enhanced for i5/OS Version 5 Release 4." />
|
|||
|
|
<meta name="DC.Relation" scheme="URI" content="jdbc2.htm" />
|
|||
|
|
<meta name="copyright" content="(C) Copyright IBM Corporation 2006" />
|
|||
|
|
<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2006" />
|
|||
|
|
<meta name="DC.Format" content="XHTML" />
|
|||
|
|
<meta name="DC.Identifier" content="jdbcenhancev5r4" />
|
|||
|
|
<meta name="DC.Language" content="en-us" />
|
|||
|
|
<!-- All rights reserved. Licensed Materials Property of IBM -->
|
|||
|
|
<!-- US Government Users Restricted Rights -->
|
|||
|
|
<!-- Use, duplication or disclosure restricted by -->
|
|||
|
|
<!-- GSA ADP Schedule Contract with IBM Corp. -->
|
|||
|
|
<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
|
|||
|
|
<link rel="stylesheet" type="text/css" href="./ic.css" />
|
|||
|
|
<title>Enhancements to IBM Toolbox for Java JDBC support for V5R4</title>
|
|||
|
|
</head>
|
|||
|
|
<body id="jdbcenhancev5r4"><a name="jdbcenhancev5r4"><!-- --></a>
|
|||
|
|
<img src="./delta.gif" alt="Start of change" /><!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
|
|||
|
|
<h1 class="topictitle1">Enhancements to IBM Toolbox for Java JDBC support for V5R4</h1>
|
|||
|
|
<div><p>Several JDBC functions were enhanced for i5/OS™ Version 5 Release 4.</p>
|
|||
|
|
<div class="section">Enhanced JDBC functions for i5/OS Version 5 Release 4 include:<ul><li><a href="#jdbcenhancev5r4__statementsize">2 MB statement size</a></li>
|
|||
|
|
<li><a href="#jdbcenhancev5r4__longcolumnname">128 byte column name support</a></li>
|
|||
|
|
<li><a href="#jdbcenhancev5r4__hosttrace">Database host server trace support</a></li>
|
|||
|
|
<li><a href="#jdbcenhancev5r4__ewlmcorrelator">eWLM Correlator support</a></li>
|
|||
|
|
</ul>
|
|||
|
|
<p>For information about enhanced JDBC functions for previous releases,
|
|||
|
|
see <a href="jdbcenhance.htm#jdbcenhance">Enhancements to JDBC support for Version 5 Release 3</a> and <a href="rzahhjdbcenhancev5r2.htm#rzahhjdbcenhancev5r2">Enhanced JDBC functions for i5/OS Version 5 Release 2</a>.</p>
|
|||
|
|
</div>
|
|||
|
|
<div class="section" id="jdbcenhancev5r4__statementsize"><a name="jdbcenhancev5r4__statementsize"><!-- --></a><h4 class="sectiontitle">2 MB statement size</h4><p>Prior to
|
|||
|
|
V5R4, the limit on SQL statement size was 65 535 bytes. This corresponds
|
|||
|
|
to 65 535 characters when the statement text is represented using a single-byte
|
|||
|
|
CCSID, and 32 767 characters when the statement text is represented using
|
|||
|
|
a double-byte CCSID. Some customers, particularly those using applications
|
|||
|
|
that automatically generate SQL statements, were affected by this limit.</p>
|
|||
|
|
<p>In
|
|||
|
|
V5R4, the iSeries™ statement
|
|||
|
|
size limit has been increased to two megabytes, or 2 097 152 bytes.
|
|||
|
|
The IBM<sup>®</sup> Toolbox
|
|||
|
|
for Java™ JDBC
|
|||
|
|
driver always sends statement text in two byte Unicode. Therefore, the maximum
|
|||
|
|
statement length in characters will be one megabyte or 1 048 576
|
|||
|
|
characters.</p>
|
|||
|
|
</div>
|
|||
|
|
<div class="section" id="jdbcenhancev5r4__longcolumnname"><a name="jdbcenhancev5r4__longcolumnname"><!-- --></a><h4 class="sectiontitle">128 byte column name support</h4><p>Starting
|
|||
|
|
with V5R4, the database will support column names up to 128 bytes for SQL
|
|||
|
|
tables. Prior to V5R4, column names up to 30 bytes were supported. The IBM Toolbox
|
|||
|
|
for Java JDBC
|
|||
|
|
driver will provide these possibly longer names to its users.</p>
|
|||
|
|
<p>There
|
|||
|
|
is one exception where 128 byte column names will not be returned. When local
|
|||
|
|
package caching is used and column names exceed 30 characters, the server
|
|||
|
|
will return the column names as the system column name.</p>
|
|||
|
|
</div>
|
|||
|
|
<div class="section" id="jdbcenhancev5r4__hosttrace"><a name="jdbcenhancev5r4__hosttrace"><!-- --></a><h4 class="sectiontitle">Database host server trace support</h4><p>A
|
|||
|
|
new option was added to the Toolbox for Java JDBC driver to turn on database host
|
|||
|
|
server tracing. To support this feature, option "64" was added to the "server
|
|||
|
|
trace" connection property. For more details, see <a href="jdbcproperties.htm#jdbcproperties">IBM Toolbox for Java JDBC properties</a>.</p>
|
|||
|
|
</div>
|
|||
|
|
<div class="section" id="jdbcenhancev5r4__ewlmcorrelator"><a name="jdbcenhancev5r4__ewlmcorrelator"><!-- --></a><h4 class="sectiontitle">eWLM Correlator support</h4><p>The IBM Toolbox
|
|||
|
|
for Java will
|
|||
|
|
accept an IBM Enterprise
|
|||
|
|
Workload Manager (eWLM) correlator and pass it on to the host as a connection
|
|||
|
|
attribute correlator for use with the Application Response Measurement (ARM)
|
|||
|
|
APIs. This correlator can be sent to the host at any time after a connection
|
|||
|
|
is made using the following method in the AS400JDBCConnection class:</p>
|
|||
|
|
<div class="p"><strong>setDB2eWLMCorrelator</strong><pre>public void setDB2eWLMCorrelator(byte[] bytes)
|
|||
|
|
throws SQLException</pre>
|
|||
|
|
</div>
|
|||
|
|
<p>Sets the eWLM
|
|||
|
|
Correlator. It is assumed a valid correlator value is used. If the value is
|
|||
|
|
null, all ARM/eWLM implementation will be turned off. eWLM correlators require i5/OS V5R3
|
|||
|
|
or later servers. This request is ignored when running to OS/400<sup>®</sup> V5R2
|
|||
|
|
or earlier servers. </p>
|
|||
|
|
<div class="p"><strong>Parameters</strong>:<ul><li><samp class="codeph">bytes</samp>: The eWLM correlator value</li>
|
|||
|
|
<li><samp class="codeph">SQLException</samp>: See the <a href="http://java.sun.com/j2se/1.4.2/docs/api/java/sql/SQLException.html" target="_blank">Class SQLException</a><img src="www.gif" alt="Link
outside Information Center" /> information at the Sun Microsystems,
|
|||
|
|
Inc. Web site.</li>
|
|||
|
|
</ul>
|
|||
|
|
</div>
|
|||
|
|
<p>For information about enhanced JDBC functions for previous releases,
|
|||
|
|
see <a href="jdbcenhance.htm#jdbcenhance">Enhancements to JDBC support for Version 5 Release 3</a> and <a href="rzahhjdbcenhancev5r2.htm#rzahhjdbcenhancev5r2">Enhanced JDBC functions for i5/OS Version 5 Release 2</a>.</p>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
<div>
|
|||
|
|
<div class="familylinks">
|
|||
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="jdbc2.htm" title="JDBC is an application programming interface (API) included in the Java platform that enables Java programs to connect to a wide range of databases.">JDBC</a></div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
<img src="./deltaend.gif" alt="End of change" /></body>
|
|||
|
|
</html>
|