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एंटीटी फ्रेमवर्क 6.0.0 का उपयोग करके, लेनदेन बंद करते समय मुझे अपवाद दिखाई दे रहा है।लेनदेन वापस रोल करते समय अपवाद - कनेक्शन पहले ही बंद हो गया है?
हमें तालिका में समवर्ती परिवर्तनों में समस्याएं आ रही हैं, इसलिए मैंने इसे एक लेनदेन में लपेट लिया, और अब मुझे रोलबैक पर अपवाद मिल रहे हैं।
कोड:
public LockInfo getSharedLock(string jobid)
{
using (var myDbContext = new MyDbContext())
{
using (var transaction = myDbContext.Database.BeginTransaction())
{
try
{
this.logger.log("Attempting to get shared lock for {0}", jobid);
var mylocks =
myDbContext.joblocks.Where(j => j.customerid == this.userContext.customerid)
.Where(j => j.jobid == jobid)
.Where(j => j.operatorid == this.userContext.operatorid);
var exclusiveLock = mylocks.FirstOrDefault(
j => j.lockstatus == LockInfo.LockState.Exclusive);
if (exclusiveLock != null)
{
this.logger.log("{0} already had exclusive lock, ignoring", jobid);
return LockInfo.populate(exclusiveLock);
}
var sharedLock = mylocks.FirstOrDefault(
j => j.lockstatus == LockInfo.LockState.Shared);
if (sharedLock != null)
{
this.logger.log("{0} already had shared lock, ignoring", jobid));
sharedLock.lockdt = DateTime.Now;
myDbContext.SaveChanges();
return LockInfo.populate(sharedLock);
}
var joblock = new joblock
{
customerid = this.userContext.customerid,
operatorid = this.userContext.operatorid,
jobid = jobid,
lockstatus = LockInfo.LockState.Shared,
sharedLock.lockdt = DateTime.Now
};
myDbContext.joblocks.Add(joblock);
myDbContext.SaveChanges();
transaction.Commit();
this.logger.log("Obtained shared lock for {0}", jobid);
return LockInfo.populate(joblock);
}
catch (Exception ex)
{
transaction.Rollback();
this.logger.logException(ex, "Exception in getSharedLock(\"{0}\")", jobid);
throw;
}
}
}
}
आप प्रवेश देख सकते हैं उपरोक्त कोड में,। हमारे पास डेटाबेस में भी लॉगिंग सक्षम है। लॉग ट्रेस:
===================
NORMAL TicketLockController.getLock("AK2015818002WL")
===================
SQL Opened connection at 9/22/2015 2:47:49 PM -05:00
===================
SQL Started transaction at 9/22/2015 2:47:49 PM -05:00
===================
NORMAL Attempting to get shared lock for AK2015818002WL
===================
SQL SELECT TOP (1) [Extent1].[customerid] AS [customerid]
,[Extent1].[jobid] AS [jobid]
,[Extent1].[lockdtdate] AS [lockdtdate]
,[Extent1].[lockdttime] AS [lockdttime]
,[Extent1].[operatorid] AS [operatorid]
,[Extent1].[lockstatus] AS [lockstatus]
,[Extent1].[changes] AS [changes]
FROM [dbo].[joblock] AS [Extent1]
WHERE ([Extent1].[customerid] = 'TESTTK')
AND ([Extent1].[jobid] = 'AK2015818002WL')
AND ([Extent1].[operatorid] = 'ADMIN')
AND (N'Exclusive' = [Extent1].[lockstatus])
===================
SQL SELECT TOP (1) [Extent1].[customerid] AS [customerid]
,[Extent1].[jobid] AS [jobid]
,[Extent1].[lockdtdate] AS [lockdtdate]
,[Extent1].[lockdttime] AS [lockdttime]
,[Extent1].[operatorid] AS [operatorid]
,[Extent1].[lockstatus] AS [lockstatus]
,[Extent1].[changes] AS [changes]
FROM [dbo].[joblock] AS [Extent1]
WHERE ([Extent1].[customerid] = 'TESTTK')
AND ([Extent1].[jobid] = 'AK2015818002WL')
AND ([Extent1].[operatorid] = 'ADMIN')
AND (N'Shared' = [Extent1].[lockstatus])
===================
SQL INSERT [dbo].[joblock] (
[customerid]
,[jobid]
,[lockdtdate]
,[lockdttime]
,[operatorid]
,[lockstatus]
,[changes]
)
VALUES (
@0
,@1
,@2
,@3
,@4
,@5
,NULL
)
===================
SQL Closed connection at 9/22/2015 2:47:50 PM -05:00
===================
EXCEPTION Unhandled exception caught: The underlying provider failed on Rollback.
===================
EXCEPTION Inner Exception: Value cannot be null.
Parameter name: connection
दो चयन सफल रहे हैं, तो डालने किसी कारण से विफल हो रहा है। अपवाद फेंकना, और किसी कारण से कनेक्शन रोलबैक() निष्पादित करने से पहले बंद हो रहा है।
कोई विचार क्या मैं गलत कर रहा हूं?
at System.Data.Entity.Core.EntityClient.EntityTransaction.Rollback()
at korterra.kt_api.Shared.TicketLockWrangler.getSharedLock(String jobid)
at korterra.kt_ws.ApiControllers.Shared.TicketLockController.getSharedLock(TicketLockDTO ticketLockDTO)
at lambda_method(Closure , Object , Object[])
at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.<>c__DisplayClass10.<GetExecutor>b__9(Object instance, Object[] methodParameters)
at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.Execute(Object instance, Object[] arguments)
at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ExecuteAsync(HttpControllerContext controllerContext, IDictionary`2 arguments, CancellationToken cancellationToken)
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Web.Http.Tracing.ITraceWriterExtensions.<TraceBeginEndAsyncCore>d__18`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Web.Http.Controllers.ApiControllerActionInvoker.<InvokeActionAsyncCore>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Web.Http.Tracing.ITraceWriterExtensions.<TraceBeginEndAsyncCore>d__18`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Web.Http.Controllers.ActionFilterResult.<ExecuteAsync>d__2.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Web.Http.Filters.AuthorizationFilterAttribute.<ExecuteAuthorizationFilterAsyncCore>d__2.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Web.Http.Controllers.ExceptionFilterResult.<ExecuteAsync>d__0.MoveNext()
भीतरी अपवाद के लिए स्टैकट्रेस: स्टैक ट्रेस ====
बाहरी अपवाद के लिए स्टैकट्रेस जोड़ना
====
at System.Data.Entity.Utilities.Check.NotNull[T](T value, String parameterName)
at System.Data.Entity.Infrastructure.Interception.DbTransactionInterceptionContext.WithConnection(DbConnection connection)
at System.Data.Entity.Infrastructure.Interception.DbTransactionDispatcher.Rollback(DbTransaction transaction, DbInterceptionContext interceptionContext)
at System.Data.Entity.Core.EntityClient.EntityTransaction.Rollback()
पूर्ण अपवाद ToString पोस्ट करें। आपकी त्रुटि लॉगिंग अपर्याप्त है। – usr
इसके अलावा, आप कई मामलों में लेनदेन नहीं कर रहे हैं। क्या यह वास्तव में जानबूझकर है? – usr
मैं मांग पर इसे फिर से नहीं बना सकता। यह ऐसा कुछ है जो हमारे क्यूए पर्यावरण में अंतःस्थापित होता है। मैंने इसे देव में कभी नहीं देखा है। मेरे पास पहले से पोस्ट की गई एकमात्र जानकारी है जो स्टैक ट्रेस है, जो बस इंगित करता है कि मेरे द्वारा पोस्ट किए गए कोड में अपवाद हुआ। –