Bukkit

The plugin loses connection from my SQL server for no reason, it leaves the error message:

2013-09-12 14:33:12 [SEVERE] [WebAuction+] SQL Error!
2013-09-12 14:33:12 [SEVERE] com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
2013-09-12 14:33:13 [SEVERE]     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
2013-09-12 14:33:13 [SEVERE]     at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
2013-09-12 14:33:13 [SEVERE]     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
2013-09-12 14:33:13 [SEVERE]     at java.lang.reflect.Constructor.newInstance(Unknown Source)
2013-09-12 14:33:13 [SEVERE]     at com.mysql.jdbc.Util.handleNewInstance(Util.java:407)
2013-09-12 14:33:13 [SEVERE]     at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1116)
2013-09-12 14:33:13 [SEVERE]     at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:343)
2013-09-12 14:33:13 [SEVERE]     at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2334)
2013-09-12 14:33:13 [SEVERE]     at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2371)
2013-09-12 14:33:13 [SEVERE]     at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2163)
2013-09-12 14:33:13 [SEVERE]     at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:794)
2013-09-12 14:33:13 [SEVERE]     at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
2013-09-12 14:33:13 [SEVERE]     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
2013-09-12 14:33:13 [SEVERE]     at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
2013-09-12 14:33:13 [SEVERE]     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
2013-09-12 14:33:14 [SEVERE]     at java.lang.reflect.Constructor.newInstance(Unknown Source)
2013-09-12 14:33:14 [SEVERE]     at com.mysql.jdbc.Util.handleNewInstance(Util.java:407)
2013-09-12 14:33:14 [SEVERE]     at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:378)
2013-09-12 14:33:14 [SEVERE]     at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:305)
2013-09-12 14:33:14 [SEVERE]     at java.sql.DriverManager.getConnection(Unknown Source)
2013-09-12 14:33:14 [SEVERE]     at java.sql.DriverManager.getConnection(Unknown Source)
2013-09-12 14:33:14 [SEVERE]     at me.lorenzop.webauctionplus.mysql.MySQLConnPool.getConnection(MySQLConnPool.java:63)
2013-09-12 14:33:14 [SEVERE]     at me.lorenzop.webauctionplus.dao.waStats.doUpdate(waStats.java:37)
2013-09-12 14:33:14 [SEVERE]     at me.lorenzop.webauctionplus.dao.waStats.Update(waStats.java:27)
2013-09-12 14:33:14 [SEVERE]     at me.lorenzop.webauctionplus.dao.waStats.getMaxAuctionID(waStats.java:101)
2013-09-12 14:33:14 [SEVERE]     at me.lorenzop.webauctionplus.tasks.ShoutSignTask.run(ShoutSignTask.java:30)
2013-09-12 14:33:14 [SEVERE]     at org.bukkit.craftbukkit.v1_4_R1.scheduler.CraftTask.run(CraftTask.java:53)
2013-09-12 14:33:14 [SEVERE]     at org.bukkit.craftbukkit.v1_4_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:344)
2013-09-12 14:33:14 [SEVERE]     at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:788)
2013-09-12 14:33:14 [SEVERE]     at ho.r(DedicatedServer.java:309)
2013-09-12 14:33:14 [SEVERE]     at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:746)
2013-09-12 14:33:14 [SEVERE]     at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:633)
2013-09-12 14:33:15 [SEVERE]     at fy.run(ThreadMinecraftServer.java:16)
2013-09-12 14:33:15 [SEVERE] Caused by: java.net.ConnectException: Connection timed out: connect
2013-09-12 14:33:15 [SEVERE]     at java.net.TwoStacksPlainSocketImpl.socketConnect(Native Method)
2013-09-12 14:33:15 [SEVERE]     at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
2013-09-12 14:33:15 [SEVERE]     at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
2013-09-12 14:33:15 [SEVERE]     at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
2013-09-12 14:33:15 [SEVERE]     at java.net.PlainSocketImpl.connect(Unknown Source)
2013-09-12 14:33:15 [SEVERE]     at java.net.SocksSocketImpl.connect(Unknown Source)
2013-09-12 14:33:15 [SEVERE]     at java.net.Socket.connect(Unknown Source)
2013-09-12 14:33:15 [SEVERE]     at java.net.Socket.connect(Unknown Source)
2013-09-12 14:33:15 [SEVERE]     at java.net.Socket.<init>(Unknown Source)
2013-09-12 14:33:15 [SEVERE]     at java.net.Socket.<init>(Unknown Source)
2013-09-12 14:33:15 [SEVERE]     at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:254)
2013-09-12 14:33:15 [SEVERE]     at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:292)
2013-09-12 14:33:15 [SEVERE]     ... 26 more

This happens what seems randomly and It crashes all the players on the server, sometimes the server do not work for an hour.
But after a while it's up running again.
My config is:

MySQL:
  Host: 72.29.66.179
  Username: gavlegub_teklite
  Password: *******
  Port: 3306
  Database: gavlegub_gavgbay
  TablePrefix: WA_
  ConnectionPoolSizeWarn: 5
  ConnectionPoolSizeHard: 10
Misc:
  ReportSales: true
  UseOriginalRecentSigns: true
  SignClickDelay: 500
  UnsafeEnchantments: false
  AnnounceGlobally: false
Tasks:
  SaleAlertSeconds: 20
  ShoutSignUpdateSeconds: 20
  RecentSignUpdateSeconds: 60
  AnnouncerMinutes: 60
SignLink:
  Enabled: false
  NumberOfLatestAuctionsToTrack: 10
Development:
  UseMultithreads: false
  Debug: false
Announcer:
  Enabled: false
  Prefix: '&c[Info] '
  Random: false
Announcements:
- This server is running WebAuctionPlus!

I also changed the settings in the database to Value: Tekkit.
Is the bug on my side, or is it my SQL host?

hm.. this is most likely a problem somewhere between the minecraft server and the mysql server, causing it to drop the connections. if possible, it's best to run mysql on the same server as the minecraft server, to avoid connection problems, and to keep any potential lag as low as possible. the website on the other hand, doesn't matter if it takes 100ms longer to run a query, you wont notice it. in game, you're much more likely to notice lag.

I have written a much better database library that automatically tries reconnecting to the database, without hammering the server with attempts. I may try to crowbar it into the current version of web auction to improve things, but it does still need testing.