Decode Error?

[SylenThunder]

My servers been running pretty fine for a while now. About the only real maintenance it requires is starting and stopping some maps, and a reboot every couple of weeks. (If I don't reboot, quests and NPCs become laggy, and I have trouble loading the iweb pages. (Server never returns data, or takes so long that the browser times out waiting for it.))

Anyway, I have the monitor for the server terminal on my desk, and I've tailed syslog so I see what's happening. Last night I walk in and it scrolling this data....

TRACE : Timer update: (0) Thu Nov 29 23:59:28 2012

TRACE : StockStatus:: uptime=63001,trade_price=0,order_volume=0,trade_volume=0,trade_amount=0,idpool=2
TRACE : gdeliveryserver::statusannounce,online=0,fakemax=6000,load=0,attr=1342177280
TRACE : KeepAlive sid=7
TRACE : KeepAlive sid=8
TRACE : checkpoint begin.
TRACE : checkpoint end.
debug : Protocol(type=79,size=53) Decode Error.
info : GameDBServer::OnAddSession, sid=40.
TRACE : GetRoleBase, roleid=32.
TRACE : GetRoleBase, roleid=32, what=NOTFOUND
debug : Protocol(type=3002,size=8) Decode Error.
info : GameDBServer::OnDelSession, sid=40.
TRACE : gdeliveryserver::statusannounce,online=0,fakemax=6000,load=0,attr=1342177280
TRACE : checkpoint begin.
TRACE : checkpoint end.
TRACE : KeepAlive sid=7
TRACE : gdeliveryserver::statusannounce,online=0,fakemax=6000,load=0,attr=1342177280
TRACE : KeepAlive sid=8
TRACE : Timer update: (0) Fri Nov 30 00:00:28 2012

info : GameDBServer::OnAddSession, sid=41.
TRACE : GetRoleBase, roleid=33.
TRACE : GetRoleBase, roleid=33, what=NOTFOUND
debug : Protocol(type=3002,size=8) Decode Error.
info : GameDBServer::OnDelSession, sid=41.
TRACE : gdeliveryserver::statusannounce,online=0,fakemax=6000,load=0,attr=1342177280
TRACE : KeepAlive sid=7
TRACE : KeepAlive sid=8
TRACE : checkpoint begin.
TRACE : checkpoint end.
info : GameDBServer::OnAddSession, sid=42.
TRACE : GetRoleBase, roleid=34.
TRACE : GetRoleBase, roleid=34, what=NOTFOUND
debug : Protocol(type=3002,size=8) Decode Error.
info : GameDBServer::OnDelSession, sid=42.
TRACE : gdeliveryserver::statusannounce,online=0,fakemax=6000,load=0,attr=1342177280
TRACE : checkpoint begin.
TRACE : checkpoint end.
TRACE : KeepAlive sid=7
TRACE : gdeliveryserver::statusannounce,online=0,fakemax=6000,load=0,attr=1342177280
TRACE : KeepAlive sid=8
TRACE : Timer update: (0) Fri Nov 30 00:01:28 2012

info : GameDBServer::OnAddSession, sid=43.
TRACE : GetRoleBase, roleid=35.
TRACE : GetRoleBase, roleid=35, what=NOTFOUND
debug : Protocol(type=3002,size=8) Decode Error.
info : GameDBServer::OnDelSession, sid=43.
TRACE : gdeliveryserver::statusannounce,online=0,fakemax=6000,load=0,attr=1342177280
TRACE : KeepAlive sid=7
TRACE : KeepAlive sid=8
TRACE : checkpoint begin.
TRACE : checkpoint end.
info : GameDBServer::OnAddSession, sid=44.
TRACE : GetRoleBase, roleid=36.
TRACE : GetRoleBase, roleid=36, what=NOTFOUND
debug : Protocol(type=3002,size=8) Decode Error.
info : GameDBServer::OnDelSession, sid=44.
TRACE : gdeliveryserver::statusannounce,online=0,fakemax=6000,load=0,attr=1342177280
TRACE : checkpoint begin.
TRACE : checkpoint end.
TRACE : KeepAlive sid=7
TRACE : gdeliveryserver::statusannounce,online=0,fakemax=6000,load=0,attr=1342177280
TRACE : KeepAlive sid=8
TRACE : Timer update: (0) Fri Nov 30 00:02:28 2012

info : GameDBServer::OnAddSession, sid=45.
TRACE : GetRoleBase, roleid=37.
TRACE : GetRoleBase, roleid=37, what=NOTFOUND
debug : Protocol(type=3002,size=8) Decode Error.
info : GameDBServer::OnDelSession, sid=45.
TRACE : gdeliveryserver::statusannounce,online=0,fakemax=6000,load=0,attr=1342177280
TRACE : KeepAlive sid=7
TRACE : PutServerData, world_tag=134 data_mask=1 priority=1.
TRACE : KeepAlive sid=8
TRACE : checkpoint begin.
TRACE : checkpoint end.
info : GameDBServer::OnAddSession, sid=46.
TRACE : GetRoleBase, roleid=38.
TRACE : GetRoleBase, roleid=38, what=NOTFOUND

Now, my first thought was that I was under some form of attack, (and I'm still going to look into that, but I just woke up). I'm wondering if some process or database just fell over though. Figured putting it out here, I might find someone who knows what this means.

When this happened, the server had been up for about 5 days since the last restart, and I haven't had anyone log into it for a couple of days. (Not because they can't, just because they haven't.)

EDIT: Just a side note, this started at 11:59pm (as you can see by this part of the log), and continued until I noticed it and stopped the server at 1:02am.

[MentaL]