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16<p align=center><b>Duplicating a cursor</b></p>
17<p>Once a cursor has been initialized (for example, by a call to
18<a href="../../api_c/dbc_get.html">DBcursor-&gt;get</a>), it can be thought of as identifying a particular
19location in a database.  The <a href="../../api_c/dbc_dup.html">DBcursor-&gt;dup</a> method permits an application to
20create a new cursor that has the same locking and transactional
21information as the cursor from which it is copied, and which optionally
22refers to the same position in the database.</p>
23<p>In order to maintain a cursor position when an application is using
24locking, locks are maintained on behalf of the cursor until the cursor is
25closed.  In cases when an application is using locking without
26transactions, cursor duplication is often required to avoid
27self-deadlocks.  For further details, refer to
28<a href="../../ref/lock/am_conv.html">Access method locking conventions</a>.</p>
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