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<h1>Working With Large Amounts Of Data</h1>
<p>The following paragraphs highlight some information
important for using db4o with large data.</p>
<h2>Size of Database Files </h2>
<p>In the default setting,
the maximum database file size is 2GB. You can increase this
value by <a href="../configuration/file/block_size.htm">configuring the internal db4o block size</a>. The maximum possible size is 254GB.</p>
<p>You cannot change this setting for an existing database. In order to change it for an existing database, you need to <![CDATA[ ]]><a href="../tuning/performance_hints/increasing_the_maximum_database_file_size.htm">defragment the database</a>.</p>
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