90 lines
5.0 KiB
HTML
90 lines
5.0 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<meta name="DC.Title" content="Rules and restrictions when using DRDA" />
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<meta name="abstract" content="Distributed Relational Database Architecture (DRDA) is an architecture that allows access to other databases that support DRDA. For more information about DRDA, see Distributed database programming." />
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<meta name="description" content="Distributed Relational Database Architecture (DRDA) is an architecture that allows access to other databases that support DRDA. For more information about DRDA, see Distributed database programming." />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<title>Rules and restrictions when using DRDA</title>
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</head>
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<body id="rzaiimst40"><a name="rzaiimst40"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Rules and restrictions when using DRDA</h1>
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<div><p>Distributed
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Relational Database Architecture™ (DRDA<sup>®</sup>) is an architecture that allows access
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to other databases that support DRDA. For more information about DRDA, see Distributed
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database programming.</p>
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<p>When using the database server as a gateway to other RDBs using DRDA, some limitations
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in functions must be followed.</p>
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<p>The following table shows the functions that have limitations when you
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are connected to a remote system from the database server.</p>
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<p><strong>DRDA functional
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limits</strong></p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><thead align="left"><tr><th valign="top" width="33.33333333333333%" id="d0e46">Function</th>
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<th valign="top" width="66.66666666666666%" id="d0e48">Limitation</th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" width="33.33333333333333%" headers="d0e46 ">Create package <p>Clear package</p>
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<p>Delete package</p>
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<p>Describe
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parameter markers</p>
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</td>
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<td valign="top" width="66.66666666666666%" headers="d0e48 ">Unsupported functions</td>
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</tr>
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<tr><td valign="top" width="33.33333333333333%" headers="d0e46 ">Prepare</td>
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<td valign="top" width="66.66666666666666%" headers="d0e48 ">Enhanced prepare option not available when using DRDA.</td>
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</tr>
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<tr><td valign="top" width="33.33333333333333%" headers="d0e46 ">Extended dynamic package support</td>
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<td valign="top" width="66.66666666666666%" headers="d0e48 "> <ul><li>When DRDA is
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used, statement names must be in the format of 'STMTxxxx', where xxxx is the
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section number.</li>
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<li>When DRDA is
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used, cursor names must be in the format of 'CRSRxxxx' or 'SCRSRxxxx', where
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xxxx is the section number.</li>
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</ul>
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</td>
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</tr>
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<tr><td valign="top" width="33.33333333333333%" headers="d0e46 ">Commit hold</td>
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<td valign="top" width="66.66666666666666%" headers="d0e48 ">Only valid if connected to an iSeries™ server</td>
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</tr>
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<tr><td valign="top" width="33.33333333333333%" headers="d0e46 ">Commit level *NONE</td>
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<td valign="top" width="66.66666666666666%" headers="d0e48 ">Not supported</td>
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</tr>
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<tr><td valign="top" width="33.33333333333333%" headers="d0e46 ">Commit level *CHANGE</td>
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<td valign="top" width="66.66666666666666%" headers="d0e48 ">Only supported if the target RDB is an iSeries. All other RDBs require a *CS
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or *ALL commit level.</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaiimst18.htm" title="For Data Transfer, ODBC, iSeries Navigator database, and iSeries Access for Windows providers (OLE DB and the .NET Data provider).">Database server</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="../ddp/rbal1kickoff.htm">Distributed database programming</a></div>
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</div>
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</div>
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</body>
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</html>
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