Entity Framework Oracle Timestamp

Selim YILDIZ

We have table named T_SC_SERVICE has INSTANCE_ID column which is type Timestamp(6).

I'm using Entity Framework 6 and DB first approaches.

I'am trying to Add and Select item for this table with using LINQ.

Insert with LINQ as shown below:

Service newItem = new Service(){    InstanceId = DateTime.Now,};this.ObjectSet.Add(newItem);this.SaveChanges();

That LINQ generates SQL as below. As you can see INSTANCE_ID parameter send as DateTime as expected.

insert into "DGARSMART"."T_SC_SERVICE"("INSTANCE_ID")values (:p0)-- :p0: '29.08.2019 07:33:38' (Type = DateTime)-- Executing at 29.08.2019 07:33:38 +03:00-- Completed in 66 ms with result: 1

Here is my Problem:

SELECT with LINQ as shown below:

       

internal Service GetServiceByInstanceId(DateTime instanceId)

{

return this.ObjectSet.FirstOrDefault(i => i.InstanceId == instanceId);

}

That LINQ generates SQL as below. As you can see Instance_ID send as Date not DateTime. So it always return Null. This is the same entity object and same model. I could not figure out why this LINQ is sending DateTime as Type of Date instead of DateTime.

SELECT "Extent1"."INSTANCE_ID" AS "INSTANCE_ID", FROM "DGARSMART"."T_SC_SERVICE" "Extent1"WHERE (("Extent1"."INSTANCE_ID" = :p__linq__0) AND (:p__linq__0 IS NOT NULL)) AND (ROWNUM <= (1) -- p__linq__0: '29.08.2019 07:33:38' (Type = Date)-- Executing at 29.08.2019 07:34:47 +03:00-- Completed in 5 ms with result: OracleDataReader

I'am using these packages:

 <package id="Oracle.ManagedDataAccess" version="12.2.1100" targetFramework="net45" /> <package id="Oracle.ManagedDataAccess.EntityFramework" version="12.2.20190115" targetFramework="net45" /> <package id="EntityFramework" version="6.0.0" targetFramework="net45" />

Alex Keh-Oracle

Thanks for reporting this. We have created Bug 30294734 to track and investigate this issue.