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<p>
When using the non-cursor Berkeley DB calls to retrieve
key/data items under the C/C++ APIs (for example, <a href="../api_reference/C/dbget.html" class="olink">DB->get()</a>),
the memory to which the pointer stored into the <a href="../api_reference/C/dbt.html" class="olink">DBT</a> refers
is only valid until the next call to Berkeley DB using the
<a href="../api_reference/C/db.html" class="olink">DB</a> handle. (This includes <span class="bold"><strong>any</strong></span> use of the returned <a href="../api_reference/C/db.html" class="olink">DB</a> handle, including
by another thread of control within the process. For this
reason, when multiple threads are using the returned <a href="../api_reference/C/db.html" class="olink">DB</a>
handle concurrently, one of the <a href="../api_reference/C/dbt.html#dbt_DB_DBT_MALLOC" class="olink">DB_DBT_MALLOC</a>,
<a href="../api_reference/C/dbt.html#dbt_DB_DBT_REALLOC" class="olink">DB_DBT_REALLOC</a> or <a href="../api_reference/C/dbt.html#dbt_DB_DBT_USERMEM" class="olink">DB_DBT_USERMEM</a> flags must be specified
with any non-cursor <a href="../api_reference/C/dbt.html" class="olink">DBT</a> used for key or data
retrieval.)
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When using the cursor Berkeley DB calls to retrieve key/data
items under the C/C++ APIs (for example, <a href="../api_reference/C/dbcget.html" class="olink">DBC->get()</a>), the memory
to which the pointer stored into the <a href="../api_reference/C/dbt.html" class="olink">DBT</a> refers is only
valid until the next call to Berkeley DB using the <a href="../api_reference/C/dbc.html" class="olink">DBC</a>
returned by <a href="../api_reference/C/dbcursor.html" class="olink">DB->cursor()</a>.
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