System.Data.EntityCommandExecutionException: An error occurred while
executing the command definition. See the inner exception for details.
—> Oracle.ManagedDataAccess.Client.OracleException: ORA-00933: sql command not properly ended at
OracleInternal.ServiceObjects.OracleCommandImpl.VerifyExecution(OracleConnectionImpl
connectionImpl,Int32& cursorId,Boolean bThrowArrayBindRelatedErrors,
OracleException& exceptionForArrayBindDML,Boolean& hasMoreRowsInDB,
Boolean bFirstIterationDone) at
OracleInternal.ServiceObjects.OracleCommandImpl.ExecuteReader(String
commandText,OracleParameterCollection paramColl,CommandType
commandType,OracleConnectionImpl connectionImpl,
OracleDataReaderImpl& rdrImpl,Int32 longFetchSize,Int64
clientInitialLOBFS,OracleDependencyImpl orclDependencyImpl,Int64[]
scnForExecution,Int64[]& scnFromExecution,OracleParameterCollection&
bindByPositionParamColl,Boolean& bBindParamPresent,Int64&
internalInitialLOBFS,OracleException& exceptionForArrayBindDML,
Boolean isDescribeOnly,Boolean isFromEF) at
Oracle.ManagedDataAccess.Client.OracleCommand.ExecuteReader(Boolean
requery,Boolean fillRequest,CommandBehavior behavior) at
Oracle.ManagedDataAccess.Client.OracleCommand.ExecuteDbDataReader(CommandBehavior
behavior) at
System.Data.EntityClient.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand
entityCommand,CommandBehavior behavior) — End of inner exception
stack trace — at
System.Data.EntityClient.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand
entityCommand,CommandBehavior behavior) at
System.Data.Objects.Internal.ObjectQueryExecutionPlan.Execute[TResultType](ObjectContext
context,ObjectParameterCollection parameterValues) at
System.Data.Objects.ObjectQuery1.GetResults(Nullable1
forMergeOption) at
System.Data.Objects.ObjectQuery1.System.Collections.Generic.IEnumerable<T>.GetEnumerator()
at System.Linq.Enumerable.SingleOrDefault[TSource](IEnumerable1
source) at
System.Linq.Queryable.SingleOrDefault[TSource](IQueryable`1 source)
at MOS.DAO.HisTreatment.HisTreatmentGet.GetById(Int64 id,
HisTreatmentSO search)

这是代码“HisTreatmentGet.GetById”：

HIS_TREATMENT result = null;
try
{
    bool valid = true;
    using (var ctx = new AppContext())
    {
        var query = ctx.HIS_TREATMENT.AsQueryable().Where(p => p.ID == id);
        ...
        result = query.SingleOrDefault();
    }
}
catch (Exception ex)
{
    ....
}
return result;

我试过谷歌搜索,但没有解决方案.有人可以给我建议吗？