Oracle Entity Frameework Autoincrement?

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I'm thinking of using ODP.NET Entity framework in my application, and i was wondering how the autoincrement is handled. When working with ODP.NET without EF i was using a sequence and in my inserts. But how should i handle this with EF ?


I've used sequences and triggers - it was the only solution that seemed to work.

How to specify that an Oracle column is auto-incremented in an , The Oracle database does not provide direct support for auto generated identity columns as part of a column definition. A common approach for implementing auto generated values for Oracle is to use a sequence/trigger combination to generate the value on insert. Oracle Entity Frameework Autoincrement? Ask Question Asked 8 years, 8 months ago. Active 1 month ago. Viewed 2k times 3. I'm thinking of using ODP.NET Entity

Typically, you retrieve the sequence's NEXT_VAL in the BEFORE INSERT trigger of the table (see sample).

In EF, set StoreGeneratedPattern of the PK column to Identity (MSDN).

Oracle ODAC Entity Framework, NET MVC app against an Oracle database. I've never done any work with Oracle DB's before and found out today that the auto increment of a key� The answer is quite simple, as long as you’re using MySQL, Microsoft SQL or any other Entity Framework compatible DBMS featuring a native auto-incrementalnumeric fields support: all we can do is to tell the Entity Framework to properly generate it.

In EntityFramework 6 you can configure your model to DatabaseGeneratedOption to Identity and set the key column:

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
        //Configure default schema

        //Map pk in table
        modelBuilder.Entity<Student>().HasKey(t => t.ID_CERT);
        modelBuilder.Entity<Student>().Property(t => t.ID_CERT)

After that update your database:


This you create the sequences and triggers automatically for you.

If you need some custom trigger see here some samples, and create an empty migration with the trigger:

public partial class SomeMigration : DbMigration
    public override void Up()
        Sql("create or replace trigger TR_CUSTOM ... ");

    public override void Down()

Auto Increment (Identity) does not work in Entity Framework, Hi why auto increment (identity) does not work in Entity Framework I use this code for auto increment Id in my Users Table: public class� An auto increment column, or an identity column in other databases, is a column that has its value automatically increased with every row that is inserted. It’s most commonly used for primary keys or ID fields, where you need a different number for each row and it should be generated easily.

[PDF] Identity Columns in Entity Framework, Using Entity Framework with Entity Framework auto-generates DML statements for Oracle E.g. ODT: Create table with auto-incrementing Identity column. Hi why auto increment (identity) does not work in Entity Framework I use this code for auto increment Id in my Users Table: public class User { [DatabaseGenerated(DatabaseGeneratedOption.I

Generating an auto-increment ID field in Entity Framework CF, Learn how to set an auto-incremental ID field using EntityFramework code-first approach by using the proper DatabaseGeneratedAttribute. The Entity Framework provider type ‘Oracle.ManagedDataAccess.EntityFramework.EFOracleProviderServices, Oracle.ManagedDataAccess.EntityFramework, Version=, Culture=neutral, PublicKeyToken=89b483f429c47342’ registered in the application config file for the ADO.NET provider with invariant name ‘Oracle.ManagedDataAccess.Client

[SOLVED], [SOLVED] - How to automatically generate identity for an Oracle database through Entity framework? The Oracle entity provider supports returning auto generated values to the Entity Framework, however, because the column itself is not explicitly marked as auto generated the provider cannot properly mark the column as StoreGeneratedPattern.