File oldbackup = null;
File backupcopy = null;
OutputStreamWriter historyFile = null;
StorageFile dbHistoryFile = null;
File backupHistoryFile = null;
LogInstant backupInstant = logFactory.getFirstUnflushedInstant();
try
{
// get name of the current db, ie. database directory of current db.
StorageFile dbase = storageFactory.newStorageFile(null);