c# Oracle.EntityFrameworkCore 5.21.3 System.Guid handling

Since the upgrade of Oracle.EntityFrameworkCore from 5.21.1 towards 5.21.3 I face the following problem: All my entities have a primairy key based on a GUID (maybe not the best idea but ok)

Table definition

create table "TABLE"
(
  id                              RAW(16) not null,
  ...
);

To get an entity by a guid I use

public TEntity GetById(Guid id)
{
    return DoQuery().SingleOrDefault(x => x.Id == id);
}

In 5.21.1 this result correctly in an entity using

info: Microsoft.EntityFrameworkCore.Database.Command[20101]
      Executed DbCommand (11ms) [Parameters=[:id_0='e6538e18-e795-45d4-894c-aa321a5c2e58' (DbType = Binary)], CommandType='Text', CommandTimeout='0']
      SELECT "r"."ID", <omitted columns>
      FROM "TABLE" "r"
      WHERE "r"."ID" = :id_0
      FETCH FIRST 2 ROWS ONLY

in 5.21.3 the query doesn’t return a result while logging the same query

With both versions the database is the same no other packages are upgraded and no changes applied to the code,. It feels like something happend in the handling of translating of guids. Is there something changed?

[anderjoy]

@Shortcheese This workaround solved the conversion “problem” with Guid:

public override void OnModelCreating(ModelBuilder modelBuilder)
{
       ....

	var converter = new ValueConverter<Guid, byte[]>(
		to => to.ToByteArray(),
		from => new Guid(from));

	foreach (var property in modelBuilder.Model.GetEntityTypes()
            .SelectMany(t => t.GetProperties())
	    .Where(p => p.ClrType == typeof(Guid) ||
                        p.ClrType == typeof(Guid?)))
	{
		property.SetValueConverter(converter);
	}
}

[alexkeh]

Thanks for reporting! I’ve been able to reproduce this problem and have filed bug 33198936. One of the dev team members will review and fix the bug.