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<title>Berkeley DB Reference Guide: Release 4.0: txn_XXX</title>
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<td><h3><dl><dt>Berkeley DB Reference Guide:<dd>Upgrading Berkeley DB Applications</dl></h3></td>
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<h1 align=center>Release 4.0: txn_XXX</h1>
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<p>The C API for the Berkeley DB Transaction subsystem was reworked in the 4.0
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<p><table border=1 align=center>
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<tr><th>Historic functional interface</th><th>Berkeley DB 4.X method</th></tr>
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<tr><td>txn_abort</td><td><a href="../../api_c/txn_abort.html">DB_TXN->abort</a></td></tr>
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<tr><td>txn_begin</td><td><a href="../../api_c/txn_begin.html">DB_ENV->txn_begin</a></td></tr>
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<tr><td>txn_checkpoint</td><td><a href="../../api_c/txn_checkpoint.html">DB_ENV->txn_checkpoint</a></td></tr>
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<tr><td>txn_commit</td><td><a href="../../api_c/txn_commit.html">DB_TXN->commit</a></td></tr>
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<tr><td>txn_discard</td><td><a href="../../api_c/txn_discard.html">DB_TXN->discard</a></td></tr>
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<tr><td>txn_id</td><td><a href="../../api_c/txn_id.html">DB_TXN->id</a></td></tr>
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<tr><td>txn_prepare</td><td><a href="../../api_c/txn_prepare.html">DB_TXN->prepare</a></td></tr>
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<tr><td>txn_recover</td><td><a href="../../api_c/txn_recover.html">DB_ENV->txn_recover</a></td></tr>
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<tr><td>txn_stat</td><td><a href="../../api_c/txn_stat.html">DB_ENV->txn_stat</a></td></tr>
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<p>Applications calling any of these functions should update their calls
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to use the enclosing <a href="../../api_c/env_class.html">DB_ENV</a> or <a href="../../api_c/txn_class.html">DB_TXN</a> handle's method
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(easily done as the first argument to the existing call is the correct
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<p>As a special case, since applications might potentially have many calls
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to the txn_abort, txn_begin and txn_commit functions, those interfaces
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continue to work unchanged in the Berkeley DB 4.0 release.
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<p>In addition, the <a href="../../api_c/txn_stat.html">DB_ENV->txn_stat</a> call has been changed in the 4.0
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release to take a flags argument. To leave their historic behavior
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unchanged, applications should add a final argument of 0 to any calls
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made to <a href="../../api_c/txn_stat.html">DB_ENV->txn_stat</a>.
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