72 lines
4.5 KiB
HTML
72 lines
4.5 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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<html lang="en-us" xml:lang="en-us">
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<meta name="DC.Title" content="Implicit connection management for the default activation group" />
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<meta name="abstract" content="The application requester can implicitly connect to an application server." />
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<meta name="description" content="The application requester can implicitly connect to an application server." />
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<meta name="DC.subject" content="relational database name, implicit CONNECT, RDB (relational database) parameter, relational database (RDB) parameter, implicit connect, SQL statement, CONNECT, implicit" />
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<meta name="keywords" content="relational database name, implicit CONNECT, RDB (relational database) parameter, relational database (RDB) parameter, implicit connect, SQL statement, CONNECT, implicit" />
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<meta name="DC.Relation" scheme="URI" content="rbal1cnct.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<title>Implicit connection management for the default activation group</title>
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</head>
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<body id="rbal1implicit"><a name="rbal1implicit"><!-- --></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">Implicit connection management for the default activation group</h1>
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<div><p>The application requester can implicitly connect to an application
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server.</p>
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<div class="section"><div class="p">Implicit connection occurs when the application requester detects
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the first SQL statement is being issued by the first active SQL program for
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the default activation group and the following items are true: <ul><li>The SQL statement being issued is not a CONNECT statement with parameters.</li>
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<li>SQL is not active in the default activation group.</li>
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</ul>
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</div>
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</div>
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<div class="section"><p>For a distributed program, the implicit connection is to the relational
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database specified on the RDB parameter. For a nondistributed program, the
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implicit connection is to the local relational database.</p>
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</div>
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<div class="section"><p>SQL ends any active connections in the default activation
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group when SQL becomes not active. SQL becomes not active when the application
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requester detects that the first active SQL program for the process
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has ended and the following conditions are all met:</p>
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<ul><li>There are no pending SQL changes</li>
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<li>There are no connections using protected conversations</li>
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<li>A SET TRANSACTION statement is not active</li>
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<li>No programs that were precompiled with <span class="cmdname">CLOSQLCSR(*ENDJOB)</span> were
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run</li>
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</ul>
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<p>If there are pending changes, protected conversations, or an active
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SET TRANSACTION statement, then SQL is placed in the exited state. If programs
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precompiled with <span class="cmdname">CLOSQLCSR(*ENDJOB)</span> were run, then SQL
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will remain active for the default activation group until the job ends.</p>
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<ul><li>At the end of a unit of work if SQL is in the exited state. This occurs
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when you issue a COMMIT or ROLLBACK command outside of an SQL program.</li>
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<li>At the end of a job.</li>
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</ul>
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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="rbal1cnct.htm" title="What makes a distributed relational database application distributed is its ability to connect to a relational database on another server.">Connect to a distributed relational database</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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