Thrown to indicate that there was an error accessing the data
backend of the SecurityService.
author: Rafal Krzewski author: Henning P. Schmiedehausen version: $Id: DataBackendException.java 534527 2007-05-02 16:10:59Z tv $
Construct an DataBackendException with specified detail message
and nested Throwable.
Parameters: msg - The detail message. Parameters: nested - the exception or error that caused this exceptionto be thrown.