diff --git a/AsbCloudDb/Model/AsbCloudDbContext.cs b/AsbCloudDb/Model/AsbCloudDbContext.cs
index 12805e60..a43f55c1 100644
--- a/AsbCloudDb/Model/AsbCloudDbContext.cs
+++ b/AsbCloudDb/Model/AsbCloudDbContext.cs
@@ -1,6 +1,5 @@
 using AsbCloudDb.Model.Subsystems;
 using Microsoft.EntityFrameworkCore;
-using Microsoft.EntityFrameworkCore.ChangeTracking;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -362,8 +361,6 @@ namespace AsbCloudDb.Model
         {
             var sql = $"REFRESH MATERIALIZED VIEW {materializedViewName};";
             return Database.ExecuteSqlRawAsync(sql, token);
-        }
-
-        public ChangeTracker GetChangeTracker() => ChangeTracker;
+        }        
     }
 }
diff --git a/AsbCloudDb/Model/IAsbCloudDbContext.cs b/AsbCloudDb/Model/IAsbCloudDbContext.cs
index c2080c72..8e117f71 100644
--- a/AsbCloudDb/Model/IAsbCloudDbContext.cs
+++ b/AsbCloudDb/Model/IAsbCloudDbContext.cs
@@ -73,7 +73,5 @@ namespace AsbCloudDb.Model
         DbSet<TEntity> Set<TEntity>(string name) where TEntity : class;
         DbSet<TEntity> Set<TEntity>() where TEntity : class;
         EntityEntry<TEntity> Entry<TEntity>([NotNull] TEntity entity) where TEntity : class;
-        ChangeTracker GetChangeTracker();
-
     }
 }
\ No newline at end of file
diff --git a/AsbCloudInfrastructure/Repository/UserRepository.cs b/AsbCloudInfrastructure/Repository/UserRepository.cs
index 1668fc6a..fe8979b7 100644
--- a/AsbCloudInfrastructure/Repository/UserRepository.cs
+++ b/AsbCloudInfrastructure/Repository/UserRepository.cs
@@ -194,14 +194,6 @@ namespace AsbCloudInfrastructure.Repository
         { 
             memoryCache.Remove(userCacheTag);
         }
-
-        private async Task<IEnumerable<RelationUserUserRole>> GetCacheRelationUserUserRoleAsync(CancellationToken token)
-        {
-            var query = dbContext.RelationUserUserRoles
-            .Include(r => r.UserRole)
-            .Include(r => r.User);
-             return await FromCacheAsync(query, relationUserUserRoleCacheTag, cacheObsolence, token);
-        }
         private IEnumerable<RelationUserUserRole> GetCachRelationUserUserRoleCacheTag()
         {
             var query = dbContext.RelationUserUserRoles
@@ -216,7 +208,7 @@ namespace AsbCloudInfrastructure.Repository
 
         private async Task UpdateRolesCacheForUserAsync(int idUser, IEnumerable<UserRoleDto> newRoles, CancellationToken token)
         {
-            var relations = (await GetCacheRelationUserUserRoleAsync(token)).Where(r => r.IdUser == idUser);
+            var relations = dbContext.RelationUserUserRoles.Where(r => r.IdUser == idUser);
             dbContext.RelationUserUserRoles.RemoveRange(relations);
 
             if (newRoles?.Any() is true)
@@ -235,7 +227,6 @@ namespace AsbCloudInfrastructure.Repository
         {
             async Task<TEntity[]> factory(CancellationToken token)
                 => await query.ToArrayAsync(token);
-            dbContext.GetChangeTracker().Clear();
             var cache = await GetOrAddCacheAsync(tag, factory, obsolescence, token);
             return cache.Select(convert);
         }
@@ -244,7 +235,6 @@ namespace AsbCloudInfrastructure.Repository
         {
             async Task<TEntity[]> factory(CancellationToken token)
                 => await query.ToArrayAsync(token);
-            dbContext.GetChangeTracker().Clear();
             var cache = await GetOrAddCacheAsync(tag, factory, obsolescence, token);
             return cache;
         }
@@ -253,7 +243,6 @@ namespace AsbCloudInfrastructure.Repository
         {
             TEntity[] factory()
                 => query.ToArray();
-            dbContext.GetChangeTracker().Clear();
             var cache = GetOrAddCache(tag, factory, obsolescence);
             return cache.Select(convert);
         }
@@ -262,7 +251,6 @@ namespace AsbCloudInfrastructure.Repository
         {
             TEntity[] factory()
                 => query.ToArray();
-            dbContext.GetChangeTracker().Clear();
             var cache = GetOrAddCache(tag, factory, obsolescence);
             return cache;
         }