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DB2 - Problem description

Problem IT10998 Status: Closed

UPDATING INFORMIX COLUMNS WITH TYPE DATETIME HOURS TO SECONDS FAILS VIA
ENTITY FRAMEWORK: UNKNOWN PRIMITIVETYPEKIND TIME

product:
DB2 FOR LUW / DB2FORLUW / A50 - DB2
Problem description:
You have written a .NET Entity Framework program that makes use 
of the DB2 Data Server Driver to connect with an Informix IDS 
instance. 
 
The program EF model has an association with a table with the 
following schema: 
 
create table test_time_hs 
  ( 
    id serial not null , 
    name char(50), 
    creation_time datetime hour to second, 
    primary key (id) 
  ); 
 
The program retrieves one row of data from the table 
test_time_hs  (C# code , "db" being the name of the EF model ): 
 
    test_time_hs myData; 
    myData = db.test_time_hs.FirstOrDefault<test_time_hs>(); 
 
updates the value for the field "creation_time", which in the 
program will appears as having .NET type "Time" : 
 
    myData.creation_time = new TimeSpan(DateTime.Now.Ticks); 
 
and then pushes back the updates to the database calling 
 
         db.SaveChanges(); 
 
This action will raise an exception. where the last nested 
exception has the description 
 
     Unknown PrimitiveTypeKind Time 
 
and the top of the stack is: 
 
IBM.Data.DB2.Entity.MetadataHelpers.GetDbType 
IBM.Data.DB2.Entity.DmlSqlGenerator.ExpressionTranslator.CreateP 
arameter 
IBM.Data.DB2.Entity.DmlSqlGenerator.ExpressionTranslator.Visit 
System.Data.Common.CommandTrees.DbConstantExpression.Accept 
(...)
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* All Platform                                                 * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 LUW v10.5 Fixpack 7 or later.                 * 
****************************************************************
Local Fix:
Solution
First Fixed in DB2 LUW v10.5 Fixpack 7.
Workaround
not known / see Local fix
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
01.09.2015
08.10.2015
08.10.2015
Problem solved at the following versions (IBM BugInfos)
Problem solved according to the fixlist(s) of the following version(s)
10.5.0.7 FixList