<?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="copyright" content="(C) Copyright IBM Corporation 2005" /> <meta name="DC.rights.owner" content="(C) Copyright IBM Corporation 2005" /> <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="concept" /> <meta name="DC.Title" content="Prevent allocation errors when copying files" /> <meta name="abstract" content="iSeries places locks on the from-file and the to-file when you copy files. To prevent allocation errors when copying files, you can place stronger locks on those files." /> <meta name="description" content="iSeries places locks on the from-file and the to-file when you copy files. To prevent allocation errors when copying files, you can place stronger locks on those files." /> <meta name="DC.Relation" scheme="URI" content="rbal3preerr.htm" /> <meta name="DC.Relation" scheme="URI" content="rbal3reasons.htm" /> <meta name="DC.Format" content="XHTML" /> <meta name="DC.Identifier" content="rbal3preall" /> <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>Prevent allocation errors when copying files</title> </head> <body id="rbal3preall"><a name="rbal3preall"><!-- --></a> <!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script> <h1 class="topictitle1">Prevent allocation errors when copying files</h1> <div><p><span class="keyword">iSeries™</span> places locks on the from-file and the to-file when you copy files. To prevent allocation errors when copying files, you can place stronger locks on those files.</p> <p>When a database file is copied, each from-file member is allocated with a shared-for-read (*SHRRD) lock state. When a device file is copied, the copy command allocates it with a shared-for-read (*SHRRD) lock state. The copy command allocates the member only while it copies it. A shared-for-read lock state lets other users read and update the file while you are copying it.</p> <p>Generally, the member being copied to is allocated with a shared-for-update (*SHRUPD) lock state. However, if you specify MBROPT(*REPLACE), the command allocates the member you are copying to with an exclusive (*EXCL) lock state, and the records in the to-file are removed</p> <div class="p">When you are copying one physical file to another, you can place stronger locks on the members to allow internal system functions to perform the copy. <ul><li>The command can allocate the from-file member with an exclusive-allow-read (*EXCLDRD) lock state.</li> <li>The command can allocate the to-file member with an exclusive (*EXCL) lock state.</li> </ul> </div> <p>The command requires these stronger locks depending on the type of copy you perform. If you cannot get these locks, run the copy command and specify a value of 1 (or any valid value other than 0) on the ERRLVL parameter. These values do not require the stronger locks.</p> <p>There are many reasons for allocation errors when you copy files. For instance, you should not use functions that touch the to-file during the copy.</p> </div> <div> <ul class="ullinks"> <li class="ulchildlink"><strong><a href="rbal3reasons.htm">Reasons for allocation errors when copying files</a></strong><br /> </li> </ul> <div class="familylinks"> <div class="parentlink"><strong>Parent topic:</strong> <a href="rbal3preerr.htm" title="You can prevent many copy errors when you plan for certain conditions and situations ahead of time.">Prevent errors when copying files</a></div> </div> </div> </body> </html>