我对上述情况感到困惑，每当我在我们的新 Oracle 安装包中执行存储过程时，它就会间歇性地出现。
sproc 是从 WCF 调用的，它返回以下异常：
<ExceptionDetail xmlns="http://schemas.datacontract.org/2004/07/System.ServiceModel" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
<HelpLink i:nil="true"/>
<InnerException>
<HelpLink i:nil="true"/>
<InnerException i:nil="true"/>
<Message>ORA-12537: Network Session: End of file</Message>
<StackTrace><![CDATA[at OracleInternal.Network.ReaderStream.Read(OraBuf OB)
at OracleInternal.TTC.OraBufReader.GetDataFromNetwork()
at OracleInternal.TTC.OraBufReader.Read(Boolean bIgnoreData)
at OracleInternal.TTC.MarshallingEngine.UnmarshalUB1(Boolean bIgnoreData)
at OracleInternal.TTC.TTCExecuteSql.ReceiveExecuteResponse(Accessor[]& defineAccessors, Accessor[] bindAccessors, Boolean bHasReturningParams, SQLMetaData& sqlMetaData, SqlStatementType statementType, Int64 noOfRowsFetchedLastTime, Int32 noOfRowsToFetch, Int32& noOfRowsFetched, Int64& queryId, Int32 longFetchSize, Int64 initialLOBFetchSize, Int64[] scnFromExecution, Boolean bAllInputBinds, Int32 arrayBindCount, DataUnmarshaller& dataUnmarshaller, MarshalBindParameterValueHelper& marshalBindParamsHelper, Int64[]& rowsAffectedByArrayBind, Boolean bDefineDone, Boolean& bMoreThanOneRowAffectedByDmlWithRetClause, List`1& implicitRSList, Boolean bLOBArrayFetchRequired)]]></StackTrace>
<Type>OracleInternal.Network.NetworkException</Type>
</InnerException>
<Message>ORA-12537: Network Session: End of file</Message>
<StackTrace><![CDATA[at Oracle.ManagedDataAccess.Client.OracleException.HandleError(OracleTraceLevel level, OracleTraceTag tag, Exception ex, OracleLogicalTransaction oracleLogicalTransaction)
at OracleInternal.TTC.TTCExecuteSql.ReceiveExecuteResponse(Accessor[]& defineAccessors, Accessor[] bindAccessors, Boolean bHasReturningParams, SQLMetaData& sqlMetaData, SqlStatementType statementType, Int64 noOfRowsFetchedLastTime, Int32 noOfRowsToFetch, Int32& noOfRowsFetched, Int64& queryId, Int32 longFetchSize, Int64 initialLOBFetchSize, Int64[] scnFromExecution, Boolean bAllInputBinds, Int32 arrayBindCount, DataUnmarshaller& dataUnmarshaller, MarshalBindParameterValueHelper& marshalBindParamsHelper, Int64[]& rowsAffectedByArrayBind, Boolean bDefineDone, Boolean& bMoreThanOneRowAffectedByDmlWithRetClause, List`1& implicitRSList, Boolean bLOBArrayFetchRequired)
at OracleInternal.ServiceObjects.OracleDataReaderImpl.FetchMoreRows(Int32 noOfRowsToFetch, Boolean fillReader, Boolean returnPSTypes)
at Oracle.ManagedDataAccess.Client.OracleDataReader.Read()
at System.Data.Common.DataAdapter.FillLoadDataRow(SchemaMapping mapping)
at System.Data.Common.DataAdapter.FillFromReader(DataSet dataset, DataTable datatable, String srcTable, DataReaderContainer dataReader, Int32 startRecord, Int32 maxRecords, DataColumn parentChapterColumn, Object parentChapterValue)
at System.Data.Common.DataAdapter.Fill(DataSet dataSet, String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords)
at Oracle.ManagedDataAccess.Client.OracleDataAdapter.Fill(DataSet dataSet, String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords)
at Oracle.ManagedDataAccess.Client.OracleDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet)
at ***REDACTED***
at ***REDACTED***
at ***REDACTED***
at SyncInvokeQtyAdjustments_Get(Object , Object[] , Object[] )
at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs)
at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage41(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage11(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage1(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)]]></StackTrace>
<Type>Oracle.ManagedDataAccess.Client.OracleException</Type>
</ExceptionDetail>
它似乎也没有模式 - 有时它工作正常，有时它没有。
这是我尝试过的东西：
- 检查 GAC 以确保不存在多个版本的 ODP。托管数据访问组件已从 nuget 导入 - 版本为 12.1.2400。
- 为要排序的连接字符串添加了各种属性 - 即持久安全信息=True;Self Tuning=True;Min Pool Size=3;Max Pool Size=25;Incr Pool Size=3;Decr Pool Size=1;Connection Timeout=20 ;Pooling=false;连接寿命=59; - 尝试了各种配置但没有运气，例如将池设置为 false/true 等。
确保在通用代码中处理对象。这是当前使用的测试代码：
using System.Data; using System.Data.Common; using Oracle.ManagedDataAccess.Client; /// <summary> /// Extensions for xxxxx. /// </summary> /// <seealso cref="System.Data.Entity.DbContext" /> public partial class xxxxEntities { public virtual DataSet ExecuteStoredProcedureAsDataSet(string storedProcName, int commandTimeoutSeconds, object[] parameters) { var sqlCommand = this.Database.Connection.CreateCommand(); var resultSet = new DataSet(); sqlCommand.CommandType = CommandType.StoredProcedure; sqlCommand.CommandTimeout = commandTimeoutSeconds; sqlCommand.CommandText = storedProcName; sqlCommand.Parameters.AddRange(parameters); var referenceCursor = new OracleParameter("P_DATAOUT", OracleDbType.RefCursor) { Direction = ParameterDirection.Output }; sqlCommand.Parameters.Add(referenceCursor); using (var adapter = CreateDataAdapter(this.Database.Connection)) { adapter.SelectCommand = sqlCommand; adapter.Fill(resultSet); } referenceCursor.Dispose(); sqlCommand.Dispose(); return resultSet; } /// <summary> /// Creates the data adapter. /// </summary> /// <param name="connection">The connection.</param> /// <returns>DbDataAdapter.</returns> DbDataAdapter CreateDataAdapter(DbConnection connection) { return DbProviderFactories.GetFactory(connection).CreateDataAdapter(); } }将存储过程中的查询减少为“固定”值 - 以确保存储过程中没有任何内容导致问题。我确实发现了一些有趣的问题，如下所述。
所以，我很茫然。我打开了 ODP 跟踪 - 并且确实注意到它在处理池时似乎有问题。第一次，我得到了这个：
2016-07-26 11:43:55.268765 TID:6 (PRI) (SVC) (ENT) OracleConnectionImpl.EvaluateDbMajorMinorPatchsetVersion()
2016-07-26 11:43:55.268765 TID:6 (PRI) (SVC) (EXT) OracleConnectionImpl.EvaluateDbMajorMinorPatchsetVersion()
2016-07-26 11:43:55.268765 TID:6 (PRI) (SVC) (EXT) OracleConnectionImpl.Connect() (oper=open) (aff=n/a) (inst=WMSQA) (affmatch=n/a) (sessid=2540:42190) (F;F;F;WMSQA;N) (pmid=29382239)
2016-07-26 11:43:55.268765 TID:6 (PRI) (ENT) (CP) PoolManager`3.PutNewPR() (aff=n/a) (inst=WMSQA) (affmatch=n/a) (sessid=2540:42190) (F;F;F;WMSQA;N) (pmid=29382239)
2016-07-26 11:43:55.268765 TID:6 (PRI) (ENT) (CP) OraclePool.PutNewPR()
2016-07-26 11:43:55.268765 TID:6 (PRI) (ENT) (CP) Pool`3.PutNewPR()
2016-07-26 11:43:55.268765 TID:6 (PRI) (CP) Pool`3.PutNewPR() (oper=cp:put:reg1) (aff=n/a) (inst=WMSQA) (affmatch=n/a) (sessid=2540:42190) (F;F;T;WMSQA;N) (pmid=29382239)
2016-07-26 11:43:55.268765 TID:6 (PRI) (EXT) (CP) Pool`3.PutNewPR()
2016-07-26 11:43:55.268765 TID:6 (PRI) (EXT) (CP) OraclePool.PutNewPR()
2016-07-26 11:43:55.268765 TID:6 (PRI) (EXT) (CP) PoolManager`3.PutNewPR() (aff=n/a) (inst=WMSQA) (affmatch=n/a) (sessid=2540:42190) (F;F;T;WMSQA;N) (pmid=29382239)
2016-07-26 11:43:55.269765 TID:6 (PRI) (EXT) (CP) PoolManager`3.CreateNewPR() (aff=n/a) (inst=WMSQA) (affmatch=n/a) (sessid=2540:42190) (F;F;T;WMSQA;N) (pmid=29382239)
2016-07-26 11:43:55.269765 TID:6 (PRI) (CP) PoolManager`3.PopulatePool() PopulatePoolThreadFunc(created=2; max=25; total=3)
2016-07-26 11:43:55.269765 TID:6 (PRI) (EXT) (CP) PoolManager`3.PopulatePool()
2016-07-26 11:43:55.880826 TID:15 (PRI) (ENT) TTCExecuteSql.ReceiveExecuteResponse()
2016-07-26 11:43:55.881826 TID:15 (PRI) (ENT) OracleException.ctor()
2016-07-26 11:43:55.885826 TID:15 (PRI) (ENT) OracleError.ctor()
2016-07-26 11:43:55.886826 TID:15 (PRI) (EXT) OracleError.ctor()
2016-07-26 11:43:55.886826 TID:15 (PRI) (EXT) OracleException.ctor()
2016-07-26 11:43:55.890827 TID:15 (PRI) (TTC) (ERR) TTCExecuteSql.ReceiveExecuteResponse() (txnid=n/a) OracleInternal.Network.NetworkException (0x000030F9): ORA-12537: Network Session: End of file
at OracleInternal.Network.ReaderStream.Read(OraBuf OB)
at OracleInternal.TTC.OraBufReader.GetDataFromNetwork()
at OracleInternal.TTC.OraBufReader.Read(Boolean bIgnoreData)
at OracleInternal.TTC.MarshallingEngine.UnmarshalUB1(Boolean bIgnoreData)
at OracleInternal.TTC.TTCExecuteSql.ReceiveExecuteResponse(Accessor[]& defineAccessors, Accessor[] bindAccessors, Boolean bHasReturningParams, SQLMetaData& sqlMetaData, SqlStatementType statementType, Int64 noOfRowsFetchedLastTime, Int32 noOfRowsToFetch, Int32& noOfRowsFetched, Int64& queryId, Int32 longFetchSize, Int64 initialLOBFetchSize, Int64[] scnFromExecution, Boolean bAllInputBinds, Int32 arrayBindCount, DataUnmarshaller& dataUnmarshaller, MarshalBindParameterValueHelper& marshalBindParamsHelper, Int64[]& rowsAffectedByArrayBind, Boolean bDefineDone, Boolean& bMoreThanOneRowAffectedByDmlWithRetClause, List`1& implicitRSList, Boolean bLOBArrayFetchRequired)
将跟踪提高到 127，我得到了这个：
2016-07-26 14:22:11.459348 TID:1 (PRI) (SVC) (ENT) OracleDataReaderImpl.FetchMoreRows()
2016-07-26 14:22:11.459348 TID:1 (PRI) (SVC) (ENT) OracleConnectionImpl.AddAllPiggyBackRequests()
2016-07-26 14:22:11.459348 TID:1 (PRI) (TTC) (ENT) TTCClose.Write()
2016-07-26 14:22:11.460348 TID:1 (PRI) (TTC) (ENT) TTCFunction.WriteFunctionHeader()
2016-07-26 14:22:11.460348 TID:1 (PRI) (TTC) (ENT) TTCMessage.WriteTTCCode()
2016-07-26 14:22:11.460348 TID:1 (PRI) (TTC) (EXT) TTCMessage.WriteTTCCode()
2016-07-26 14:22:11.460348 TID:1 (PRI) (TTC) (EXT) TTCFunction.WriteFunctionHeader()
2016-07-26 14:22:11.460348 TID:1 (PRI) (TTC) (EXT) TTCClose.Write()
2016-07-26 14:22:11.460348 TID:1 (PRI) (SVC) (EXT) OracleConnectionImpl.AddAllPiggyBackRequests()
2016-07-26 14:22:11.460348 TID:1 (PRI) (TTC) (ENT) TTCExecuteSql.SendExecuteRequest()
2016-07-26 14:22:11.460348 TID:1 (PRI) (TTC) (ENT) TTCExecuteSql.GetExecuteOptions()
2016-07-26 14:22:11.460348 TID:1 (PRI) (TTC) (EXT) TTCExecuteSql.GetExecuteOptions()
2016-07-26 14:22:11.460348 TID:1 (PRI) (TTC) (ENT) TTCExecuteSql.WriteOall8Message()
2016-07-26 14:22:11.460348 TID:1 (PRI) (TTC) (ENT) TTCFunction.WriteFunctionHeader()
2016-07-26 14:22:11.460348 TID:1 (PRI) (TTC) (ENT) TTCMessage.WriteTTCCode()
2016-07-26 14:22:11.460348 TID:1 (PRI) (TTC) (EXT) TTCMessage.WriteTTCCode()
2016-07-26 14:22:11.460348 TID:1 (PRI) (TTC) (EXT) TTCFunction.WriteFunctionHeader()
2016-07-26 14:22:11.460348 TID:1 (PRI) (TTC) (ENT) TTCExecuteSql.WritePisdef()
2016-07-26 14:22:11.460348 TID:1 (PRI) (TTC) (EXT) TTCExecuteSql.WritePisdef()
2016-07-26 14:22:11.460348 TID:1 (PRI) (TTC) (ENT) TTCExecuteSql.WritePisdefData()
2016-07-26 14:22:11.461348 TID:1 (PRI) (TTC) (EXT) TTCExecuteSql.WritePisdefData()
2016-07-26 14:22:11.461348 TID:1 (NET) (SND) 00 4C 00 00 06 00 00 00 |.L......|
2016-07-26 14:22:11.461348 TID:1 (NET) (SND) 00 00 |.. |
2016-07-26 14:22:11.461348 TID:1 (NET) (SND) 11 69 00 01 01 01 01 02 |.i......|
2016-07-26 14:22:11.461348 TID:1 (NET) (SND) 03 5E 00 02 80 40 01 03 |.^...@..|
2016-07-26 14:22:11.461348 TID:1 (NET) (SND) 00 00 01 01 0D 00 00 00 |........|
2016-07-26 14:22:11.461348 TID:1 (NET) (SND) 00 01 01 00 00 00 00 00 |........|
2016-07-26 14:22:11.461348 TID:1 (NET) (SND) 00 00 00 00 00 00 01 00 |........|
2016-07-26 14:22:11.461348 TID:1 (NET) (SND) 00 00 00 00 00 00 00 00 |........|
2016-07-26 14:22:11.461348 TID:1 (NET) (SND) 02 01 36 00 00 00 03 A7 |..6.....|
2016-07-26 14:22:11.461348 TID:1 (NET) (SND) EB C6 00 01 01 00 00 00 |........|
2016-07-26 14:22:11.461348 TID:1 (NET) (SND) 00 00 |.. |
2016-07-26 14:22:11.461348 TID:1 (PRI) (TTC) (EXT) TTCExecuteSql.WriteOall8Message()
2016-07-26 14:22:11.461348 TID:1 (PRI) (TTC) (EXT) TTCExecuteSql.SendExecuteRequest()
2016-07-26 14:22:11.461348 TID:1 (PRI) (TTC) (ENT) TTCExecuteSql.ReceiveExecuteResponse()
2016-07-26 14:22:11.461348 TID:1 (PRI) (BUF) (COBP.GET) (poolid:2) (key:8192) (bufid:8) (count:5) (OraBufReader.GetDataFromNetwork)
2016-07-26 14:22:12.161348 TID:1 (PRI) (ENT) TTCExecuteSql.ReceiveExecuteResponse()
2016-07-26 14:22:12.162348 TID:1 (PRI) (ENT) OracleException.ctor()
2016-07-26 14:22:12.162348 TID:1 (PRI) (ENT) OracleError.ctor()
2016-07-26 14:22:12.162348 TID:1 (PRI) (EXT) OracleError.ctor()
2016-07-26 14:22:12.162348 TID:1 (PRI) (EXT) OracleException.ctor()
2016-07-26 14:22:12.163348 TID:1 (PRI) (TTC) (ERR) TTCExecuteSql.ReceiveExecuteResponse() (txnid=n/a) OracleInternal.Network.NetworkException (0x000030F9): ORA-12537: Network Session: End of file
at OracleInternal.Network.ReaderStream.Read(OraBuf OB)
at OracleInternal.TTC.OraBufReader.GetDataFromNetwork()
at OracleInternal.TTC.OraBufReader.Read(Boolean bIgnoreData)
at OracleInternal.TTC.MarshallingEngine.UnmarshalUB1(Boolean bIgnoreData)
at OracleInternal.TTC.TTCExecuteSql.ReceiveExecuteResponse(Accessor[]& defineAccessors, Accessor[] bindAccessors, Boolean bHasReturningParams, SQLMetaData& sqlMetaData, SqlStatementType statementType, Int64 noOfRowsFetchedLastTime, Int32 noOfRowsToFetch, Int32& noOfRowsFetched, Int64& queryId, Int32 longFetchSize, Int64 initialLOBFetchSize, Int64[] scnFromExecution, Boolean bAllInputBinds, Int32 arrayBindCount, DataUnmarshaller& dataUnmarshaller, MarshalBindParameterValueHelper& marshalBindParamsHelper, Int64[]& rowsAffectedByArrayBind, Boolean bDefineDone, Boolean& bMoreThanOneRowAffectedByDmlWithRetClause, List`1& implicitRSList, Boolean bLOBArrayFetchRequired)
2016-07-26 14:22:12.163348 TID:1 (PRI) (EXT) TTCExecuteSql.ReceiveExecuteResponse()
2016-07-26 14:22:12.163348 TID:1 (PRI) (TTC) (EXT) TTCExecuteSql.ReceiveExecuteResponse()
2016-07-26 14:22:12.163348 TID:1 (PRI) (ENT) OracleDataReaderImpl.FetchMoreRows()
2016-07-26 14:22:12.163348 TID:1 (PRI) (SVC) (ERR) OracleDataReaderImpl.FetchMoreRows() (txnid=n/a) Oracle.ManagedDataAccess.Client.OracleException (0x80004005): ORA-12537: Network Session: End of file ---> OracleInternal.Network.NetworkException (0x000030F9): ORA-12537: Network Session: End of file
我通过注释掉 select 语句和 where 子句来调整存储过程中的查询，并逐渐将它们重新引入以查看问题是否出在查询中（尽管在 Oracle Developer 中运行它可以正常工作）。我已经把它缩小到这个声明 - 如果我重新引入它，我会再次得到文件结束异常：
WHERE
-- Only handle records that contain a numeric value in the ref field.
ISNUMERIC(PTT.REF_FIELD_2) = 1
这就是包中 ISNUMERIC 函数的样子；
FUNCTION ISNUMERIC (p_string IN VARCHAR2) RETURN INT
IS
v_new_num NUMBER;
BEGIN
IF p_string IS NULL
THEN
RETURN 0;
END IF;
v_new_num := TO_NUMBER(p_string);
RETURN 1;
EXCEPTION
WHEN VALUE_ERROR THEN
RETURN 0;
END ISNUMERIC;
起初我认为可能是捕获的异常数量由于异常数量而阻止了进一步的执行。但是，我将函数简化为仅返回 '1'，但每次都无法正常工作。
查询的结果通过引用游标传回，例如
PROCEDURE DEVSP_API_GETxxxx(
P_STARTDATE IN DATE
, P_ENDDATE IN DATE
, P_xxx IN P_xxx_TYPE
, <snip>
, P_DATAOUT OUT sys_refcursor
) AS
BEGIN
OPEN P_DATAOUT FOR
SELECT
'asdsa' as "x",
'sadasdsad' as "z",
0 as "Qty",
<snip>
最后，我从 select 语句和 where 子句中删除了所有 Function 调用——这立即阻止了错误的发生——我用函数运行的相同逻辑替换了它们——只是在 SELECT 和 WHERE 语句中内联。
发生什么了？在包含函数调用的包中运行存储过程时，ODP.net 是否存在限制？似乎有点奇怪。
解决方法是不使用函数，但我不想这样做，因为某些选择语句中有条件表达式，它们在基于联合的查询中重复相同的逻辑。
非常感谢任何帮助或指示！
附言。为了透明起见，我上周在 Oracle 论坛上发布了这篇文章，但没有得到任何回复。
更新：2016 年 8 月 3 日
最后设法访问服务器以尝试一些跟踪。以下是进程过早结束时跟踪日志中出现的内容：
*** 2016-08-03 10:14:39.111
*** SESSION ID:(2526.53330) 2016-08-03 10:14:39.111
*** CLIENT ID:() 2016-08-03 10:14:39.111
*** SERVICE NAME:(XXXXX) 2016-08-03 10:14:39.111
*** MODULE NAME:(iisexpress.exe) 2016-08-03 10:14:39.111
*** CLIENT DRIVER:(ODPM.NET) 2016-08-03 10:14:39.111
*** ACTION NAME:() 2016-08-03 10:14:39.111
Exception [type: SIGSEGV, Address not mapped to object] [ADDR:0x0] [PC:0x3CEBE1D, pmucfst()+13] [flags: 0x0, count: 1]
Incident 109041 created, dump file /u01/app/oracle/diag/rdbms/xxxx/XXXX/incident/incdir_109041/XXXXX_ora_13149_i109041.trc
ORA-07445: exception encountered: core dump [pmucfst()+13] [SIGSEGV] [ADDR:0x0] [PC:0x3CEBE1D] [Address not mapped to object] []
ssexhd: crashing the process...
Shadow_Core_Dump = PARTIAL
我还可以在同一文件夹中看到核心转储。我尝试在其中 grepping 存储桶跟踪文件，看看是否有任何明显的东西 - 但老实说，当你不知道你在寻找什么时，很难搜索到一些东西！
每当它使用函数时，我可以看到之前尝试运行存储过程的核心转储 - 所以它至少是相当一致的。