f 
<code>dbDefaultExtensionQuantum</code>. Increasing the value of this parameters leads to less frequent 
rescanning of allocation bitmap from the very beginning. It leads to faster allocation speed and better locality of 
reference for created objects (because there is more chances that them will be allocated sequentially). 
From the other side it leads to less efficient memory usage. Reducing the value of this parameter force reusing 
of existed holes in memory allocation bitmap. 
</TD></TR>
</TABLE><P>
