88 lines
5.1 KiB
HTML
88 lines
5.1 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="Source code for PGM3" />
|
||
|
|
<meta name="abstract" content="Here is the source code for PGM3." />
|
||
|
|
<meta name="description" content="Here is the source code for PGM3." />
|
||
|
|
<meta name="DC.Relation" scheme="URI" content="rbafyconnectmgmt.htm" />
|
||
|
|
<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
|
||
|
|
<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" />
|
||
|
|
<meta name="DC.Format" content="XHTML" />
|
||
|
|
<meta name="DC.Identifier" content="rbafydrdapgm3" />
|
||
|
|
<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>Source code for PGM3</title>
|
||
|
|
</head>
|
||
|
|
<body id="rbafydrdapgm3"><a name="rbafydrdapgm3"><!-- --></a>
|
||
|
|
<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
|
||
|
|
<h1 class="topictitle1">Source code for PGM3</h1>
|
||
|
|
<div><p>Here is the source code for PGM3.</p>
|
||
|
|
<div class="example"> <div class="fignone"><span class="figcap">Figure 1. Source code for PGM3</span><pre> …
|
||
|
|
EXEC SQL
|
||
|
|
<strong>INSERT INTO</strong> TAB <strong>VALUES</strong>(:st1);
|
||
|
|
EXEC SQL <strong>COMMIT</strong>;
|
||
|
|
....</pre>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
<div class="section"><p>Commands to create program and SQL package for PGM3:</p>
|
||
|
|
<pre>CRTSQLCI OBJ(PGM3) COMMIT(*CHG) RDB(SYSD) OBJTYPE(*MODULE)
|
||
|
|
CRTPGM PGM(PGM3) ACTGRP(APPGRP)
|
||
|
|
CRTSQLPKG PGM(PGM3) RDB(SYSD)</pre>
|
||
|
|
</div>
|
||
|
|
<div class="example"> <div class="fignone"><br /><img src="rv2w577.gif" alt="REQTEXT" /><br /></div>
|
||
|
|
</div>
|
||
|
|
<div class="section"><p>In this example, PGM1 is a non-ILE program created using the CRTSQLCBL
|
||
|
|
command. This program runs in the default activation group. PGM2 is created
|
||
|
|
using the CRTSQLCI command, and it runs in a system-named activation group.
|
||
|
|
PGM3 is also created using the CRTSQLCI command, but it runs in the activation
|
||
|
|
group named APPGRP. Because APPGRP is not the default value for the ACTGRP
|
||
|
|
parameter, the CRTPGM command is issued separately. The CRTPGM command is
|
||
|
|
followed by a CRTSQLPKG command that creates the SQL package object on the
|
||
|
|
SYSD relational database. In this example, the user has not explicitly started
|
||
|
|
the job level commitment definition. SQL implicitly starts commitment control. </p>
|
||
|
|
</div>
|
||
|
|
<div class="section"> <ol><li>PGM1 is called and runs in the default activation group.</li>
|
||
|
|
<li>PGM1 connects to relational database SYSB and runs a SELECT statement.</li>
|
||
|
|
<li>PGM1 then calls PGM2, which runs in a system-named activation group.</li>
|
||
|
|
<li>PGM2 does a connect to relational database SYSC. Because PGM1 and PGM2
|
||
|
|
are in different activation groups, the connection started by PGM2 in the
|
||
|
|
system-named activation group does not disconnect the connection started by
|
||
|
|
PGM1 in the default activation group. Both connections are active. PGM2 opens
|
||
|
|
the cursor and fetches and updates a row. PGM2 is running under commitment
|
||
|
|
control, is in the middle of a unit of work, and is not at a connectable state.</li>
|
||
|
|
<li>PGM2 calls PGM3, which runs in activation group APPGRP.</li>
|
||
|
|
<li>The INSERT statement is the first statement run in activation group APPGRP.
|
||
|
|
The first SQL statement causes an implicit connect to relational database
|
||
|
|
SYSD. A row is inserted into table TAB located at relational database SYSD.
|
||
|
|
The insert is then committed. The pending changes in the system-named activation
|
||
|
|
group are not committed, because commitment control was started by SQL with
|
||
|
|
a commit scope of activation group.</li>
|
||
|
|
<li>PGM3 is then exited and control returns to PGM2. PGM2 fetches and updates
|
||
|
|
another row.</li>
|
||
|
|
<li>PGM3 is called again to insert the row. An implicit connect was done on
|
||
|
|
the first call to PGM3. It is not done on subsequent calls because the activation
|
||
|
|
group did not end between calls to PGM3. Finally, all the rows are processed
|
||
|
|
by PGM2 and the unit of work associated with the system-named activation group
|
||
|
|
is committed.</li>
|
||
|
|
</ol>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
<div>
|
||
|
|
<div class="familylinks">
|
||
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="rbafyconnectmgmt.htm" title="SQL connections are managed at the activation group level. Each activation group within a job manages its own connections and these connections are not shared across activation groups.">Connection management and activation groups</a></div>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
</body>
|
||
|
|
</html>
|