61 lines
3.5 KiB
HTML
61 lines
3.5 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="SQL4030 - &1 tasks specified for parallel scan on table &2." />
|
|
<meta name="DC.Relation" scheme="URI" content="prtsqlinfmsg.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="sql4030" />
|
|
<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>SQL4030 - &1 tasks specified for parallel scan on table &2.</title>
|
|
</head>
|
|
<body id="sql4030"><a name="sql4030"><!-- --></a>
|
|
<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
|
|
<h1 class="topictitle1">SQL4030 - &1 tasks specified for parallel scan on table &2.</h1>
|
|
<div>
|
|
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><thead align="left"><tr><th colspan="2" align="center" valign="middle" id="d0e16">SQL4030</th>
|
|
</tr>
|
|
</thead>
|
|
<tbody><tr valign="middle"><td valign="middle" width="26.02040816326531%" headers="d0e16 ">Message Text:</td>
|
|
<td valign="middle" width="73.9795918367347%" headers="d0e16 ">&1 tasks specified for parallel scan on table &2.</td>
|
|
</tr>
|
|
<tr valign="middle"><td valign="middle" width="26.02040816326531%" headers="d0e16 ">Cause Text:</td>
|
|
<td valign="middle" width="73.9795918367347%" headers="d0e16 ">The query optimizer has calculated the optimal number of tasks for
|
|
this query based on the query attribute degree. <p></p>
|
|
The table number
|
|
refers to the relative position of this table in the query.</td>
|
|
</tr>
|
|
<tr valign="middle"><td valign="middle" width="26.02040816326531%" headers="d0e16 ">Recovery Text:</td>
|
|
<td valign="middle" width="73.9795918367347%" headers="d0e16 ">Parallel table or index scan can improve the performance of queries.
|
|
Even though the access plan was created to use the specified number of tasks
|
|
for the parallel scan, the system may alter that number based on the availability
|
|
of the pool in which this job is running or the allocation of the table's
|
|
data across the disk units. <p></p>
|
|
Refer to <a href="rzajqdta.htm#rzajqdta">Data access on DB2 UDB for iSeries: data access paths and methods</a> for
|
|
more information about parallel scan.</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
</div>
|
|
</div>
|
|
<div>
|
|
<div class="familylinks">
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="prtsqlinfmsg.htm" title="The following are the messages returned from PRTSQLINF.">PRTSQLINF message reference</a></div>
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html> |