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elwoos
Master Smack Fu Yak Hacker
2052 Posts |
 Posted - 2006-02-03 : 14:48:44
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| Some of my users have suddenly started getting a timeout error when trying to use our application and I have no idea why.The machines are running Win 95, with an Access 97 SP2 based client. The tables in Access are linked to SQL Server 7 using ODBC.It's definitely not a network issue as I can ping anything I want including the SQL server box from affected machines. These particular machines are all on a Token Ring network in the same building. At some point today this went down. The datacomms guys who fixed it said that something old had caused the issue by simply being put on the network but they weren't sure what exactly that was. These guys know what they are talking about i.e. they are seperate to my old nemesis.It was after that when this timeout issue started BUT not all of the token ring machines were affected. Some can connect. Does anyone have any ideas/suggestions at all then I can take a look on monday. The only other thing is that the machine I looked at had a load of screensavers downloaded and installed which makes me suspicious.Many thanks in advancesteve-----------Facts are meaningless. You could use facts to prove anything that's even remotely true! |
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MichaelP
Jedi Yak
2489 Posts |
Posted - 2006-02-03 : 15:37:18
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| Are you able to use profiler to see how long it is taking to execute the query? Maybe you've gone beyond your timeout's all the sudden with an increase in data?Michael<Yoda>Use the Search page you must. Find the answer you will. Cursors, path to the Dark Side they are. Avoid them, you must. Use Order By NewID() to get a random record you will.</Yoda> |
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tkizer
Almighty SQL Goddess
38200 Posts |
Posted - 2006-02-03 : 15:56:28
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| Start SQL Profiler (send the results to a table). Have the user reproduce the problem. Stop SQL Profiler. Then:SELECT Duration, TextDataFROM YourTraceTableNameWHERE TextData IS NOT NULL AND Duration >= YourAppTimeOutValueORDER BY Duration DESCBased upon what TextData shows, you will need to determine the next course of action. It could just be to increase your timeout value, however I wouldn't recommend that. It could be that you need to add indexes, fix the query so that it has a better execution plan, update statistics, dbcc dbreindex, recompile the stored procedure, etc...Tara Kizeraka tduggan |
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Kristen
Test
22859 Posts |
Posted - 2006-02-04 : 06:18:49
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| "Token Ring network"Blimey! Folk still use them, eh?Kristen |
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elwoos
Master Smack Fu Yak Hacker
2052 Posts |
Posted - 2006-02-04 : 15:27:13
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Thanks Michael and Tara I'll take a look on monday at what you suggest.Kristen - don't forget this is public money  steve-----------Facts are meaningless. You could use facts to prove anything that's even remotely true! |
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Kristen
Test
22859 Posts |
Posted - 2006-02-05 : 13:58:30
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"don't forget this is public money"Wasted ... again ...  Kristen |
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elwoos
Master Smack Fu Yak Hacker
2052 Posts |
Posted - 2006-02-06 : 03:10:19
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quote:
Wasted ... again
In this case not! I'm reliably informed that token ring is far more reliable than ethernet, it's just that ethernet became popular and very cheap which is why even we will be ripping the token ring out sooner or later. Anybody want to buy a Betamax?steve-----------Facts are meaningless. You could use facts to prove anything that's even remotely true! |
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Kristen
Test
22859 Posts |
Posted - 2006-02-06 : 03:31:42
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| "In this case not"So its as fast as 100Mb Ethernet is it? And there's GigaBit stuff too is there??Even in its day IBM's Token Ring was vastly outpaced by Token passing systems (that doesn't sound like the right term - what I meant was the thing that let you tag your packet onto the end of the "train" of packets as they came past, rather than having to work your turn for the Token)Kristen |
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madhivanan
Premature Yak Congratulator
22864 Posts |
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elwoos
Master Smack Fu Yak Hacker
2052 Posts |
Posted - 2006-02-06 : 05:58:00
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quote:
So its as fast as 100Mb Ethernet is it?
They do 100Mb Ethernet!! When did that come out?More seriously, I'm no expert on this sort of stuff but I understand that when it says 4Mb it means it and not somewhere around half that on a good day if no-one else happens to be using it. From what I recall the packet size is bigger. Always important I find.  steve-----------Facts are meaningless. You could use facts to prove anything that's even remotely true! |
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Kristen
Test
22859 Posts |
Posted - 2006-02-06 : 06:02:58
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| "From what I recall the packet size is bigger"I don't think anything that calls itself a "token" can be in Linford Christie's Lunch-Box league, eh? Kristen |
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elwoos
Master Smack Fu Yak Hacker
2052 Posts |
Posted - 2006-02-06 : 06:04:36
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| Going back to the original issue - this is really bizzare. One of the users confirmed this morning that they still couldn't get into the system. i.e. a server reboot by my network friends at the weekend hadn't sorted this issue. An hour or so later I am ready to do the trace as suggested. So I ring her up and aks her to try to get into the system. She gets in fine!! I'm the hero of the moment. I almost didn't have the heart to tell her that I had done nothing.I'm off to look at the profiler table now - with a bit less pressure than before. Thanks again to all who offered advice.steve-----------Facts are meaningless. You could use facts to prove anything that's even remotely true! |
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elwoos
Master Smack Fu Yak Hacker
2052 Posts |
Posted - 2006-02-06 : 06:07:02
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quote:
I don't think anything that calls itself a "token" can be in Linford Christie's Lunch-Box league, eh?
Hope Jen's not reading this thread. You'll corrupt her  steve-----------Facts are meaningless. You could use facts to prove anything that's even remotely true! |
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Timeout!