92 lines
5.3 KiB
HTML
92 lines
5.3 KiB
HTML
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<meta name="DC.Title" content="WAITFILE parameter" />
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<meta name="abstract" content="The WAITFILE parameter allows you to specify whether and how long a program waits for resources." />
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<title>WAITFILE parameter</title>
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</head>
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<body id="rbam6waitfileexpand"><a name="rbam6waitfileexpand"><!-- --></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">WAITFILE parameter</h1>
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<div><p>The WAITFILE parameter allows you to specify whether and how long
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a program waits for resources.</p>
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<div class="section"><p>You use the WAITFILE parameter to specify the maximum number of
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seconds that a program waits for the following:</p>
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<ul><li>File resources to be allocated when the file is opened</li>
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<li>Session resources when the evoke function is issued for an APPC device</li>
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<li>The device to be allocated when an acquire operation is performed to read
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the file</li>
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</ul>
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<p>If the program must wait, it will be placed in a wait state until
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the resources are available or until the wait time expires. If two or more
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file resources are needed and are not available because they are being used
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by different system users, the acquisition of each resource might require
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a wait. This maximum is applied to each wait.</p>
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<p>The length of the wait
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can be specified in this parameter, or the default wait time of the class
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that applies to the object can be used. If the file resources cannot be allocated
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in the specified number of seconds, an error message is returned to the program.</p>
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<p>The
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file resources that must be allocated depend on the type of file being opened.
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File resources consist of the following.</p>
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<ul><li>For device files that are not spooled (SPOOL(*NO)), the file resources
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include the file description and device description. Because the device description
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must be allocated, the device itself must also be available.</li>
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<li>For device files that are spooled (SPOOL(*YES)), the file resources include
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the file description, the specified output queue, and storage in the system
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for the spooled data. Because the data is spooled, the device description
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(and thus the device itself) need not be available.</li>
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<li>For database files, the file resources consist of the file and member
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data. The file's associated member paths are not accessed, and therefore,
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the system does not wait for them. A file open exception error can occur before
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the WAITFILE time has expired when an access path is not available (for example,
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when the access path is being rebuilt). <p>The <span class="cmdname">Allocate
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Object (ALCOBJ)</span> command can be used to allocate specific file resources
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before the file is opened.</p>
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</li>
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</ul>
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<p>The session resources that were allocated for an APPC device conversation
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can be lost between the time the application issues a detach function or receives
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a detach indication and the time another evoke function is issued. If the
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session resource is lost, this parameter is used to determine the length of
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time that the system waits for another session resource.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Values allowed</h4><dl><dt class="dlterm">*IMMED</dt>
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<dd>The program does not wait; when the file is opened, an immediate allocation
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of the file resources is required.</dd>
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<dt class="dlterm">*CLS</dt>
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<dd>The default wait time specified in the class description is used as the
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wait time for the file resources to be allocated.</dd>
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<dt class="dlterm"><var class="varname">1-32767</var></dt>
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<dd>Specify the number of seconds that the program waits for the file resources
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to be allocated.</dd>
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</dl>
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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="rbam6expand.htm" title="This section contains the expanded descriptions of some of the parameters commonly used in the CL commands.">Commonly used parameters</a></div>
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</div>
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</div>
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</body>
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