db4o

Configuration.weakReferences Method 

turns weak reference management on or off.

void weakReferences(
   bool flag
);

Remarks

turns weak reference management on or off.

Performance may be improved by running db4o without weak reference memory management at the cost of higher memory consumption or by alternatively implementing a manual memory management using com.db4o.ext.ExtObjectContainer.purge

The default setting is

true
.

Ignored on JDKs before 1.2.

See Also

Configuration Interface | com.db4o.config Namespace