Problem :- Some time WCF Data Services running via Devart Data Driver Throws Exception "NET: Unknown error 1"
<message>NET: Unknown error 1</message>
<type>System.Exception</type>
<stacktrace>at
Devart.Data.Oracle.DirectUtils.b(Int32 A_0) at
Solution : In My case root cause of this problem was out of memory problem , Increasing system memory and page file works for me.
Detailed Error Trace
<?xml version="1.0" encoding="utf-8" standalone="yes" ?>
- <error xmlns="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata">
<code />
<message xml:lang="en-US">An error occurred while processing this request.</message>
- <innererror>
<message>Exception has been thrown by the
target of an invocation.</message>
<type>System.Reflection.TargetInvocationException</type>
<stacktrace>at
System.RuntimeMethodHandle._InvokeMethodFast(IRuntimeMethodInfo method, Object
target, Object[] arguments, SignatureStruct& sig, MethodAttributes
methodAttributes, RuntimeType typeOwner)
at
System.RuntimeMethodHandle.InvokeMethodFast(IRuntimeMethodInfo method, Object
target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeType
typeOwner)
at
System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr,
Binder binder, Object[] parameters, CultureInfo culture, Boolean
skipVisibilityChecks)
at
System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr,
Binder binder, Object[] parameters, CultureInfo culture)
at
System.Data.Services.Providers.BaseServiceProvider.InvokeServiceOperation(ServiceOperation
serviceOperation, Object[] parameters)
at
System.Data.Services.RequestUriProcessor.CreateFirstSegment(IDataService
service, String identifier, Boolean checkRights, String queryPortion, Boolean
isLastSegment, Boolean& crossReferencingUrl)
at
System.Data.Services.RequestUriProcessor.CreateSegments(String[] segments, IDataService
service) at System.Data.Services.RequestUriProcessor.ProcessRequestUri(Uri
absoluteRequestUri, IDataService service)
at
System.Data.Services.DataService`1.ProcessIncomingRequestUri() at
System.Data.Services.DataService`1.HandleRequest()</stacktrace>
- <internalexception>
<message>NET: Unknown error 1</message>
<type>System.Exception</type>
<stacktrace>at
Devart.Data.Oracle.DirectUtils.b(Int32 A_0) at
Devart.Data.Oracle.DirectUtils.a()
at
Devart.Data.Oracle.cd.a(Byte A_0) at Devart.Data.Oracle.cb.a(Byte A_0)
at
Devart.Data.Oracle.cp.a() at Devart.Data.Oracle.ao.a()
at
Devart.Data.Oracle.g.a()
at
Devart.Data.Oracle.u.a(Int32 A_0, bh A_1)
at
Devart.Data.Oracle.OracleCommand.InternalExecute(CommandBehavior behavior,
IDisposable disposable, Int32 startRecord, Int32 maxRecords, Boolean nonQuery)
at
Devart.Common.DbCommandBase.ExecuteDbDataReader(CommandBehavior behavior,
Boolean nonQuery)
at
Devart.Common.DbCommandBase.ExecuteDbDataReader(CommandBehavior behavior)
at
System.Data.Common.DbCommand.ExecuteReader()
at
System.Data.Objects.ObjectContext.ExecuteStoreQueryInternal[TElement](String
commandText, String entitySetName, MergeOption mergeOption, Object[] parameters)
at
System.Data.Objects.ObjectContext.ExecuteStoreQuery[TElement](String
commandText, Object[] parameters)
at
BUSS.ODS.HCOHCPAlternateIDDataService.HCOHCPAlternateIDs(String language,
String country, String partytype) in Y:\src\BUSS\Service.cs:line 60</stacktrace>
</internalexception>
</innererror>
</error>
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