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<title>Berkeley DB: Db.set_q_extentsize</title>
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<h1>Db.set_q_extentsize</h1>
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import com.sleepycat.db.*;
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public void set_q_extentsize(int extentsize)
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<p>Set the size of the extents used to hold pages in a Queue database,
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specified as a number of pages. Each extent is created as a separate
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physical file. If no extent size is set, the default behavior is to
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create only a single underlying database file.
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<p>For information on tuning the extent size, see
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<a href="../ref/am_conf/extentsize.html">Selecting a extent size</a>.
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<p>The Db.set_q_extentsize method configures a database, not only operations performed
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using the specified <a href="../api_java/db_class.html">Db</a> handle.
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<p>The Db.set_q_extentsize interface may not be called after the <a href="../api_java/db_open.html">Db.open</a>
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If the database already exists when
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<a href="../api_java/db_open.html">Db.open</a> is called, the information specified to Db.set_q_extentsize will
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<p>The Db.set_q_extentsize method throws an exception that encapsulates a non-zero error value on
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<p>The Db.set_q_extentsize method may fail and throw an exception encapsulating a non-zero error for the following conditions:
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<p><dt>EINVAL<dd>An invalid flag value or parameter was specified.
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<p>Called after <a href="../api_java/db_open.html">Db.open</a> was called.
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<p>The Db.set_q_extentsize method may fail and throw an exception for errors specified for other Berkeley DB and C library or system methods.
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If a catastrophic error has occurred, the Db.set_q_extentsize method may fail and
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throw a <a href="../api_java/runrec_class.html">DbRunRecoveryException</a>,
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in which case all subsequent Berkeley DB calls will fail in the same way.
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<a href="../api_java/db_class.html">Db</a>
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<a href="../api_java/db_list.html">Databases and Related Methods</a>
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