ibm-information-center/dist/eclipse/plugins/i5OS.ic.apis_5.4.0.1/qwtsettr.htm

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<title>Set Trace (QWTSETTR) API</title>
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<h2>Set Trace (QWTSETTR) API</h2>
<div class="box" style="width: 70%;">
<br>
&nbsp;&nbsp;Required Parameter Group:<br>
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<br>
<table width="100%">
<tr>
<td align="center" valign="top" width="10%">1</td>
<td align="left" valign="top" width="50%">Job name</td>
<td align="left" valign="top" width="20%">Input</td>
<td align="left" valign="top" width="20%">Char(10)</td>
</tr>
<tr>
<td align="center" valign="top">2</td>
<td align="left" valign="top">User name</td>
<td align="left" valign="top">Input</td>
<td align="left" valign="top">Char(10)</td>
</tr>
</table>
<br>
&nbsp;&nbsp;Optional Parameter:<br>
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<tr>
<td align="center" valign="top" width="10%">3</td>
<td align="left" valign="top" width="50%">Error code</td>
<td align="left" valign="top" width="20%">I/O</td>
<td align="left" valign="top" width="20%">Char(*)</td>
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&nbsp;&nbsp;Default Public Authority: *USE<br>
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&nbsp;&nbsp;Threadsafe: No<br>
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<p>The Set Trace (QWTSETTR) API starts a Trace Job (TRCJOB) command for the job
passed on the parameter at the earliest point while the job is starting. This
allows tracing of jobs early in the life of a job to help debug problems that
could not have been done earlier because a user could not enter the command
until the job was actually started.</p>
<p>The QWTSETTR API sets up the information about the job so that when that job
is started a trace will begin.</p>
<p>The QWTSETTR API can be called multiple times to set up traces for multiple
jobs. When the tracing is finished, the Control Trace (QWTCTLTR) API should be
called using the *RESET value for the control value parameter to clear out all
the job names. The Control Trace (QWTCTLTR) API must be called to turn on this
trace activity.</p>
<p>The information set up by the QWTSETTR API will be in effect during an
initial program load (IPL).</p>
<p>The information set up by the QWTSETTR API does not work for active jobs,
but only for jobs that have not started yet.</p>
<p>If a job ends while the trace activity is running for that job, the trace
information will be dumped to a spooled file.</p>
<p>The Trace Job (TRCJOB) command is issued in the job as if a user had typed
in the command; therefore, the user (user name parameter) must have
authorization to the TRCJOB command for this to work properly.</p>
<p>This API should be used only when recommended by an IBM service
representative for collecting information for problems that occur early in job
initiation.</p>
<br>
<h3>Authorities and Locks</h3>
<p>The user (user name parameter) must have authorization to the TRCJOB command
for this to work properly.</p>
<br>
<h3>Required Parameter Group</h3>
<dl>
<dt><strong>Job Name</strong></dt>
<dd>INPUT; CHAR(10)
<p>The name of the job that will be traced.</p>
</dd>
<dt><strong>User Name</strong></dt>
<dd>INPUT; CHAR(10)
<p>The name of the user that will be traced.</p>
</dd>
</dl>
<br>
<h3>Optional Parameter</h3>
<dl>
<dt><strong>Error code</strong></dt>
<dd>I/O; CHAR(*)
<p>The structure in which to return error information. For the format of the
structure, see <a href="../apiref/error.htm#hdrerrcod">Error Code Parameter</a>. If this
parameter is omitted, diagnostic and escape messages are issued to the
application.</p>
</dd>
</dl>
<br>
<h3>Error Messages</h3>
<table width="100%" cellpadding="5">
<tr>
<th align="left" valign="top">Message ID</th>
<th align="left" valign="top">Error Message Text</th>
</tr>
<tr>
<td align="left" valign="top" width="15%">CPF24B4 E</td>
<td align="left" valign="top" width="85%">Severe error while addressing
parameter list.</td>
</tr>
<tr>
<td align="left" valign="top">CPF3C90 E</td>
<td align="left" valign="top">Literal value cannot be changed.</td>
</tr>
<tr>
<td align="left" valign="top">CPF3CF1 E</td>
<td align="left" valign="top">Error code parameter not valid.</td>
</tr>
<tr>
<td align="left" valign="top">CPF9872 E</td>
<td align="left" valign="top">Program or service program &amp;1 in library
&amp;2 ended. Reason code &amp;3.</td>
</tr>
</table>
<br>
<hr>
API introduced: V2R3
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