[help]gameserver Error ;(

Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
        at com.mysql.jdbc.MysqlIO.nextRowFast(MysqlIO.java:1621)
        at com.mysql.jdbc.MysqlIO.nextRow(MysqlIO.java:1398)
        at com.mysql.jdbc.MysqlIO.readSingleRowSet(MysqlIO.java:2816)
        at com.mysql.jdbc.MysqlIO.getResultSet(MysqlIO.java:467)
        at com.mysql.jdbc.MysqlIO.readResultsForQueryOrUpdate(MysqlIO.java:2510)

        at com.mysql.jdbc.MysqlIO.readAllResults(MysqlIO.java:1746)
        at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2135)
        at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2542)
        at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.ja
va:1734)
        at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:
1885)
        at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewPr
oxyPreparedStatement.java:76)
        at ua.la2vip.l2j.gameserver.datatables.NpcTable.restoreNpcData(NpcTable.
java:59)
        at ua.la2vip.l2j.gameserver.datatables.NpcTable.<init>(NpcTable.java:45)

        at ua.la2vip.l2j.gameserver.datatables.NpcTable.getInstance(NpcTable.jav
a:36)
        at ua.la2vip.l2j.gameserver.GameServer.<init>(GameServer.java:351)
        at ua.la2vip.l2j.gameserver.GameServer.main(GameServer.java:735)

@set mmr=-Xmx512m