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<?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 xml:lang="en" lang="en" xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html;charset=utf-8" /> <meta http-equiv="Content-Style-Type" content="text/css" /> <!-- MOTW-DISABLED saved from url=(0014)about:internet --> <title>Unicode Support</title> <link rel="StyleSheet" href="css/oraclewp.css" type="text/css" media="all" /> <link rel="StyleSheet" href="css/webworks.css" type="text/css" media="all" /> <script type="text/javascript" language="JavaScript1.2" src="wwhdata/common/context.js"></script> <script type="text/javascript" language="JavaScript1.2" src="wwhdata/common/towwhdir.js"></script> <script type="text/javascript" language="JavaScript1.2" src="wwhdata/common/wwhpagef.js"></script> <script type="text/javascript" language="JavaScript1.2"> <!-- var WebWorksRootPath = ""; // --> </script> <script type="text/javascript" language="JavaScript1.2"> <!-- // Set reference to top level help frame // var WWHFrame = WWHGetWWHFrame("", true); // --> </script> <script type="text/javascript" language="JavaScript1.2" src="scripts/expand.js"></script> </head> <body class="" style="background-color: #FFFFEE;" onload="WWHUpdate();" onunload="WWHUnload();" onkeydown="WWHHandleKeyDown((document.all||document.getElementById||document.layers)?event:null);" onkeypress="WWHHandleKeyPress((document.all||document.getElementById||document.layers)?event:null);" onkeyup="WWHHandleKeyUp((document.all||document.getElementById||document.layers)?event:null);"> <br /> <div class="WebWorks_Breadcrumbs" style="text-align: left;"> <a class="WebWorks_Breadcrumb_Link" href="oraclewp.12.01.html#110178">8 The Oracle Wire Protocol Driver</a> : Unicode Support</div> <hr align="left" /> <blockquote> <div class="head_1"><a name="110178">Unicode Support</a></div> <div class="Body"><a name="110188">The Oracle Wire Protocol driver automatically determines whether the Oracle database is a </a>Unicode database.</div> <div class="Body"><a name="110189">If the database character set is set to UTF-8, the Oracle driver maps the Oracle data types </a>to Unicode data types as shown in the following table:</div> <table class="Format_B" cellspacing="0" summary=""> <caption></caption> <tr style="vertical-align: top;"> <td style="padding-bottom: auto; padding-left: auto; padding-right: auto; padding-top: auto; vertical-align: top;"> <div class="table_column_heads"><a name="110192">Oracle Data Type</a></div> </td> <td style="padding-bottom: auto; padding-left: auto; padding-right: auto; padding-top: auto; vertical-align: top;"> <div class="table_column_heads"><a name="110194">Mapped to. . .</a></div> </td> </tr> <tr style="vertical-align: top;"> <td style="padding-bottom: auto; padding-left: auto; padding-right: auto; padding-top: auto; vertical-align: top;"> <div class="table_text"><a name="110196">CHAR</a></div> </td> <td style="padding-bottom: auto; padding-left: auto; padding-right: auto; padding-top: auto; vertical-align: top;"> <div class="table_text"><a name="110198">SQL_WCHAR</a></div> </td> </tr> <tr style="vertical-align: top;"> <td style="padding-bottom: auto; padding-left: auto; padding-right: auto; padding-top: auto; vertical-align: top;"> <div class="table_text"><a name="110200">CLOB</a></div> </td> <td style="padding-bottom: auto; padding-left: auto; padding-right: auto; padding-top: auto; vertical-align: top;"> <div class="table_text"><a name="110202">SQL_WLONGVARCHAR</a></div> </td> </tr> <tr style="vertical-align: top;"> <td style="padding-bottom: auto; padding-left: auto; padding-right: auto; padding-top: auto; vertical-align: top;"> <div class="table_text"><a name="110204">VARCHAR2</a></div> </td> <td style="padding-bottom: auto; padding-left: auto; padding-right: auto; padding-top: auto; vertical-align: top;"> <div class="table_text"><a name="110206">SQL_WVARCHAR</a></div> </td> </tr> <tr style="vertical-align: top;"> <td style="padding-bottom: auto; padding-left: auto; padding-right: auto; padding-top: auto; vertical-align: top;"> <div class="table_text"><a name="110208">LONG</a></div> </td> <td style="padding-bottom: auto; padding-left: auto; padding-right: auto; padding-top: auto; vertical-align: top;"> <div class="table_text"><a name="110210">SQL_WLONGVARCHAR</a></div> </td> </tr> </table> <div class="Body"><a name="454011">The driver also continues to map these Oracle data types to the normal character data </a>types. See <span class="Cross_ref_"><a href="javascript:WWHClickedPopup('ODBC', 'oraclewp.12.06.html#110036', '');">â??Data Typesâ??</a></span> for these mappings. The only exception to this is that when the Enable N-CHAR Support option is enabled, the N-CHAR types are mapped to the Unicode types SQL_WCHAR, SQL_WVARCHAR, and SQL_WLONGVARCHAR, and the normal character types are mapped to the data types SQL_CHAR, SQL_LONGVARCHAR, and SQL_VARCHAR, regardless of the character set on the Oracle server.</div> <script type="text/javascript" language="JavaScript1.2"> <!-- // Clear related topics // WWHClearRelatedTopics(); document.writeln(WWHRelatedTopicsInlineHTML()); // --> </script> </blockquote> <script type="text/javascript" language="JavaScript1.2"> <!-- document.write(WWHRelatedTopicsDivTag() + WWHPopupDivTag() + WWHALinksDivTag()); // --> </script> </body> </html>
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