161 lines
9.1 KiB
HTML
161 lines
9.1 KiB
HTML
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<title>SQLTransact</title>
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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">SQLTransact - Commit or roll back transaction</h1>
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<div><div class="section"></div>
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<div class="section"><h4 class="sectiontitle">Purpose</h4> <p><samp class="codeph">SQLTransact()</samp> commits
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or rolls back the current transaction in the connection.</p>
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<p>All changes
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to the database performed on the connection since connect time or the previous
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call to <samp class="codeph">SQLTransact()</samp> (whichever is the most recent) are
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committed or rolled back.</p>
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<p>If a transaction is active on a connection,
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the application must call <samp class="codeph">SQLTransact()</samp> before it can disconnect
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from the database.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Syntax</h4><pre>SQLRETURN SQLTransact (SQLHENV henv,
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SQLHDBC hdbc,
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SQLSMALLINT fType);</pre>
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</div>
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<div class="section"><h4 class="sectiontitle">Function arguments</h4>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" width="100%" frame="hsides" border="1" rules="all"><caption>Table 1. SQLTransact arguments</caption><thead align="left"><tr><th align="left" valign="top" width="20%" id="d0e61">Data type</th>
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<th align="left" valign="top" width="20%" id="d0e63">Argument</th>
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<th align="left" valign="top" width="20%" id="d0e65">Use</th>
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<th align="left" valign="top" width="40%" id="d0e67">Description</th>
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</tr>
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</thead>
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<tbody><tr><td align="left" valign="top" width="20%" headers="d0e61 ">SQLHDBC</td>
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<td align="left" valign="top" width="20%" headers="d0e63 "><em>hdbc</em></td>
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<td align="left" valign="top" width="20%" headers="d0e65 ">Input</td>
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<td align="left" valign="top" width="40%" headers="d0e67 ">Database connection handle. <p>If <em>hdbc</em> is
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set to SQL_NULL_HDBC, then <em>henv</em> must contain the environment handle
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that the connection is associated with.</p>
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</td>
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</tr>
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<tr><td align="left" valign="top" width="20%" headers="d0e61 ">SQLHENV</td>
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<td align="left" valign="top" width="20%" headers="d0e63 "><em>henv</em></td>
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<td align="left" valign="top" width="20%" headers="d0e65 ">Input</td>
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<td align="left" valign="top" width="40%" headers="d0e67 ">Environment handle. <p>If <em>hdbc</em> is
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a valid connection handle, <em>henv</em> is ignored.</p>
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</td>
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</tr>
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<tr><td align="left" valign="top" width="20%" headers="d0e61 ">SQLSMALLINT</td>
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<td align="left" valign="top" width="20%" headers="d0e63 "><em>fType</em></td>
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<td align="left" valign="top" width="20%" headers="d0e65 ">Input</td>
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<td align="left" valign="top" width="40%" headers="d0e67 ">The wanted action for the transaction. The
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value for this argument must be one of: <ul><li>SQL_COMMIT</li>
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<li>SQL_ROLLBACK</li>
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<li>SQL_COMMIT_HOLD</li>
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<li>SQL_ROLLBACK_HOLD</li>
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</ul>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<div class="section"><h4 class="sectiontitle">Usage</h4><div class="p">Completing a transaction with SQL_COMMIT or
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SQL_ROLLBACK has the following effects: <ul><li>Statement handles are still valid after a call to <samp class="codeph">SQLTransact()</samp>.</li>
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<li>Cursor names, bound parameters, and column bindings survive transactions.</li>
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<li>Open cursors are closed, and any result sets that are pending retrieval
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are discarded.</li>
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</ul>
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</div>
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<p>Completing the transaction with SQL_COMMIT_HOLD or SQL_ROLLBACK_HOLD
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still commits or rolls back the database changes, but does not cause cursors
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to be closed.</p>
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<p>If no transaction is currently active on the connection,
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calling <samp class="codeph">SQLTransact()</samp> has no effect on the database server
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and returns SQL_SUCCESS.</p>
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<p><samp class="codeph">SQLTransact()</samp> might fail while
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executing the COMMIT or ROLLBACK due to a loss of connection. In this case
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the application might be unable to determine whether the COMMIT or ROLLBACK
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has been processed, and a database administrator's help might be required.
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Refer to the DBMS product information for more information about transaction
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logs and other transaction management tasks.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Return codes</h4><ul><li>SQL_SUCCESS</li>
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<li>SQL_ERROR</li>
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<li>SQL_INVALID_HANDLE</li>
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</ul>
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</div>
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<div class="section"><h4 class="sectiontitle">Diagnostics</h4>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" width="100%" frame="hsides" border="1" rules="rows"><caption>Table 2. SQLTransact SQLSTATEs</caption><thead align="left"><tr><th align="left" valign="top" width="25%" id="d0e176">SQLSTATE</th>
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<th align="left" valign="top" width="25%" id="d0e178">Description</th>
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<th align="left" valign="top" width="50%" id="d0e180">Explanation</th>
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</tr>
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</thead>
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<tbody><tr><td align="left" valign="top" width="25%" headers="d0e176 "><strong>08</strong>003</td>
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<td align="left" valign="top" width="25%" headers="d0e178 ">Connection not open</td>
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<td align="left" valign="top" width="50%" headers="d0e180 ">The <em>hdbc</em> is not in a connected state.</td>
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</tr>
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<tr><td align="left" valign="top" width="25%" headers="d0e176 "><strong>08</strong>007</td>
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<td align="left" valign="top" width="25%" headers="d0e178 ">Connection failure during transaction</td>
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<td align="left" valign="top" width="50%" headers="d0e180 ">The connection associated with the <em>hdbc</em> fails
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during the processing of the function during the processing of the function
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and it cannot be determined whether the requested COMMIT or ROLLBACK occurs
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before the failure.</td>
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</tr>
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<tr><td align="left" valign="top" width="25%" headers="d0e176 "><strong>58</strong>004</td>
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<td align="left" valign="top" width="25%" headers="d0e178 ">System error</td>
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<td align="left" valign="top" width="50%" headers="d0e180 ">Unrecoverable system error.</td>
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</tr>
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<tr><td align="left" valign="top" width="25%" headers="d0e176 "><strong>HY</strong>001</td>
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<td align="left" valign="top" width="25%" headers="d0e178 ">Memory allocation failure</td>
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<td align="left" valign="top" width="50%" headers="d0e180 ">The driver is unable to allocate memory required
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to support the processing or completion of the function.</td>
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</tr>
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<tr><td align="left" valign="top" width="25%" headers="d0e176 "><strong>HY</strong>012</td>
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<td align="left" valign="top" width="25%" headers="d0e178 ">Transaction operation state that is not valid</td>
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<td align="left" valign="top" width="50%" headers="d0e180 ">The value specified for the argument <em>fType</em> is
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neither SQL_COMMIT nor SQL_ROLLBACK.</td>
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</tr>
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<tr><td align="left" valign="top" width="25%" headers="d0e176 "><strong>HY</strong>013 <strong>*</strong></td>
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<td align="left" valign="top" width="25%" headers="d0e178 ">Memory management problem</td>
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<td align="left" valign="top" width="50%" headers="d0e180 ">The driver is unable to access memory required
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to support the processing or completion of the function.</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<div class="section"><h4 class="sectiontitle">Example</h4></div>
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<div class="example" id="rzadpfntrans__xmtrans"><a name="rzadpfntrans__xmtrans"><!-- --></a><p>Refer to the example
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in <a href="rzadpfnfetch.htm">SQLFetch - Fetch next row</a></p>
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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="rzadphdapi.htm" title="This topic provides a description of each CLI function.">DB2 UDB CLI functions</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rzadpefftrans.htm">Effects of calling SQLTransact() in a DB2 UDB CLI application</a></div>
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</div>
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</div>
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</body>
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</html> |