This topic applies to Java version only
Java Security Manager can be used to specify Java application security permissions. It is usually provided by web-browsers for applet execution, however any Java application can make use of a security manager. For example, to use the default security manager you will only need to pass -Djava.security.manager
option to JVM command line. Custom security managers can be created and utilized as well (please refer to Java documentation for more information).
Unfortunately, current db4o implementation can't work under a default security manager. If this feature is important for you, please, vote and watch db4o task COR-830.