lock timeout

Hello All-
I've been troubleshooting deadlocks in a third-party app. I ran a trace with the Lock:Deadlock, Lock:Timeout, RPC:Starting, SQL Batch:Starting, and all Error and Warning events. I then imported the output files into a table for analysis. My results show 90,000+ Lock:Timeout events and 20 Lock:Deadlock events for a 5 hour period! The vast majority of the Lock:Timeout events are for index or table resources. The server is running SQL2K, sp3a.
Here's my questions:
-Shouldn't I be seeing corresponding Attention or Exception events for the Lock:Timeouts? I thought SQL Server returned an error 1229 to the client and terminated the statement on a lock timeout. Would I not see this in the trace? Do I really have 90,000+ statements being terminated?
-a small number of the database ids in the Lock:Timeout events are large ids not included in sysdatabases. Where are these coming from? A bug?
-My developers swear that they are not setting a lock_timeout on their connections. Nor can I find a SET LOCK_TIMEOUT statement in the trace output. So why am I getting all these timeouts? I thought SQL Server by default waited indefinitely on a lock.
I confused! Any insight would be greatly appreciated.
thanks-
MargaretUnfortunately that counter is pretty much useless since it includes internal
lightweight timeouts that are normal and always present. You pretty much
have to forget about the majority of them as normal.
--
Andrew J. Kelly SQL MVP
"Margaret" <anonymous@.discussions.microsoft.com> wrote in message
news:57AEA811-A059-4426-B023-5FD611C7D330@.microsoft.com...
> Hello All-
> I've been troubleshooting deadlocks in a third-party app. I ran a trace
with the Lock:Deadlock, Lock:Timeout, RPC:Starting, SQL Batch:Starting, and
all Error and Warning events. I then imported the output files into a table
for analysis. My results show 90,000+ Lock:Timeout events and 20
Lock:Deadlock events for a 5 hour period! The vast majority of the
Lock:Timeout events are for index or table resources. The server is running
SQL2K, sp3a.
> Here's my questions:
> -Shouldn't I be seeing corresponding Attention or Exception events for the
Lock:Timeouts? I thought SQL Server returned an error 1229 to the client
and terminated the statement on a lock timeout. Would I not see this in the
trace? Do I really have 90,000+ statements being terminated?
> -a small number of the database ids in the Lock:Timeout events are large
ids not included in sysdatabases. Where are these coming from? A bug?
> -My developers swear that they are not setting a lock_timeout on their
connections. Nor can I find a SET LOCK_TIMEOUT statement in the trace
output. So why am I getting all these timeouts? I thought SQL Server by
default waited indefinitely on a lock.
> I confused! Any insight would be greatly appreciated.
> thanks-
> Margaret
>

LoadSnapshot: Item with session: ...

I have a application that uses the Report Viewer control. I ran across a
strange error executing a report.
What does this error message mean and how do you fix it?
w3wp!session!5!04/13/2007-22:38:55:: i INFO: LoadSnapshot: Item with
session: yzyevt45bsjnhi55g1tpso45, reportPath: , userName: MY_NET_1\DB not
found in the database
w3wp!library!5!04/13/2007-22:38:55:: e ERROR: Throwing
Microsoft.ReportingServices.Diagnostics.Utilities.ExecutionNotFoundException:
Execution 'yzyevt45bsjnhi55g1tpso45' cannot be found, ;
Info:
Microsoft.ReportingServices.Diagnostics.Utilities.ExecutionNotFoundException:
Execution 'yzyevt45bsjnhi55g1tpso45' cannot be foundHello Parker,
I would like to know this issue more detailed.
1. Did you use the ReportingViewer to connect to the Server report?
2. Have you applied the latest services pack 2 on the report server?
3. If you restart the IIS in the report server, did this issue still
occured?
4. What's the Application pool identity you use of the Application pool for
Reporting Services? If you change it to the Domain admin, did this issue
still occur?
Please let me know the result and so that I can provide further assistance.
Sincerely,
Wei Lu
Microsoft Online Community Support
==================================================
Get notification to my posts through email? Please refer to
http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif
ications.
Note: The MSDN Managed Newsgroup support offering is for non-urgent issues
where an initial response from the community or a Microsoft Support
Engineer within 1 business day is acceptable. Please note that each follow
up response may take approximately 2 business days as the support
professional working with you may need further investigation to reach the
most efficient resolution. The offering is not appropriate for situations
that require urgent, real-time or phone-based interactions or complex
project analysis and dump analysis issues. Issues of this nature are best
handled working with a dedicated Microsoft Support Engineer by contacting
Microsoft Customer Support Services (CSS) at
http://msdn.microsoft.com/subscriptions/support/default.aspx.
==================================================(This posting is provided "AS IS", with no warranties, and confers no
rights.)|||Hi ,
How is everything going? Please feel free to let me know if you need any
assistance.
Sincerely,
Wei Lu
Microsoft Online Community Support
==================================================
When responding to posts, please "Reply to Group" via your newsreader so
that others may learn and benefit from your issue.
==================================================This posting is provided "AS IS" with no warranties, and confers no rights.|||Sorry I haven't had a chance to get back sooner.
1. Yes I did use the ReportViewer to connect to the Server report.
2. No, SP2 has not been applied. We are scheduling this for the weekend.
3. This only happened once so far. But there is not normal production use
yet.
4. We will change pool identity Domain admin this weekend.
So for now, we will make the changes and wait to see if it occurs again.
Thanks for the help.
"Wei Lu [MSFT]" wrote:
> Hello Parker,
> I would like to know this issue more detailed.
> 1. Did you use the ReportingViewer to connect to the Server report?
> 2. Have you applied the latest services pack 2 on the report server?
> 3. If you restart the IIS in the report server, did this issue still
> occured?
> 4. What's the Application pool identity you use of the Application pool for
> Reporting Services? If you change it to the Domain admin, did this issue
> still occur?
> Please let me know the result and so that I can provide further assistance.
> Sincerely,
> Wei Lu
> Microsoft Online Community Support
> ==================================================> Get notification to my posts through email? Please refer to
> http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif
> ications.
> Note: The MSDN Managed Newsgroup support offering is for non-urgent issues
> where an initial response from the community or a Microsoft Support
> Engineer within 1 business day is acceptable. Please note that each follow
> up response may take approximately 2 business days as the support
> professional working with you may need further investigation to reach the
> most efficient resolution. The offering is not appropriate for situations
> that require urgent, real-time or phone-based interactions or complex
> project analysis and dump analysis issues. Issues of this nature are best
> handled working with a dedicated Microsoft Support Engineer by contacting
> Microsoft Customer Support Services (CSS) at
> http://msdn.microsoft.com/subscriptions/support/default.aspx.
> ==================================================> (This posting is provided "AS IS", with no warranties, and confers no
> rights.)
>|||Hi ,
How is everything going? Please feel free to let me know if you need any
assistance.
Sincerely,
Wei Lu
Microsoft Online Community Support
==================================================
When responding to posts, please "Reply to Group" via your newsreader so
that others may learn and benefit from your issue.
==================================================This posting is provided "AS IS" with no warranties, and confers no rights.|||Wei Lu,
I am seeing this same behavior in a completely different environment.
1) application that uses the Report Viewer connect to the Server report.
2) SP2 is applied
3) I restarted IIS on the RS server, but it did not correct the issue. I
also restarted the RS server, but the issue continues.
4) I don't currently have the capability to adjust the Application pool
identity, but am trying to get that changed now.
Do you have any further information on what might be causing this error?
thanks.
"Wei Lu [MSFT]" wrote:
> Hi ,
> How is everything going? Please feel free to let me know if you need any
> assistance.
> Sincerely,
> Wei Lu
> Microsoft Online Community Support
> ==================================================> When responding to posts, please "Reply to Group" via your newsreader so
> that others may learn and benefit from your issue.
> ==================================================> This posting is provided "AS IS" with no warranties, and confers no rights.
>|||Hi Wei Lu --
I too am experiencing the Execution 'xxx' cannot be found error. I am
using ReportViewer, with SP2 is installed. This is a local RS install
using the Network account on XP SP2.
The problem is very intermittent -- occurred 3 times today. Twice when
setting report parameters and clicking 'View Report', another when
clicking the double-arrows to show/hide the parameter area. There was
no length of inactivity (some users reported problems after 10 minutes
of inactivity -- I think this is a different issue).
Any help would be appreciated!
Thanks,
Chris