diff --git a/slo/src/AdoNet/SloTableContext.cs b/slo/src/AdoNet/SloTableContext.cs
index de0c572f..0ab51f68 100644
--- a/slo/src/AdoNet/SloTableContext.cs
+++ b/slo/src/AdoNet/SloTableContext.cs
@@ -2,7 +2,6 @@
 using Internal;
 using Microsoft.Extensions.Logging;
 using Polly;
-using Prometheus;
 using Ydb.Sdk;
 using Ydb.Sdk.Ado;
 
@@ -12,13 +11,7 @@ public class SloTableContext : SloTableContext<YdbDataSource>
 {
     private readonly AsyncPolicy _policy = Policy.Handle<YdbException>(exception => exception.IsTransient)
         .WaitAndRetryAsync(10, attempt => TimeSpan.FromMilliseconds(attempt * 10),
-            (e, _, _, context) =>
-            {
-                var errorsTotal = (Counter)context["errorsTotal"];
-
-                Logger.LogWarning(e, "Failed read / write operation");
-                errorsTotal?.WithLabels(((YdbException)e).Code.StatusName(), "retried").Inc();
-            });
+            (e, _, _, _) => { Logger.LogWarning(e, "Failed read / write operation"); });
 
     protected override string Job => "AdoNet";
 
@@ -33,7 +26,7 @@ protected override async Task Create(YdbDataSource client, int operationTimeout)
         {
             CommandText = $"""
                            CREATE TABLE `{SloTable.Name}` (
-                               Guid             UUID,
+                               Guid             Uuid,
                                Id               Int32,
                                PayloadStr       Text,
                                PayloadDouble    Double,
@@ -49,16 +42,9 @@ PRIMARY KEY (Guid, Id)
     protected override async Task<(int, StatusCode)> Save(
         YdbDataSource client,
         SloTable sloTable,
-        int writeTimeout,
-        Counter? errorsTotal = null
+        int writeTimeout
     )
     {
-        var context = new Context();
-        if (errorsTotal != null)
-        {
-            context["errorsTotal"] = errorsTotal;
-        }
-
         var policyResult = await _policy.ExecuteAndCaptureAsync(async _ =>
         {
             await using var ydbConnection = await client.OpenConnectionAsync();
@@ -66,7 +52,7 @@ PRIMARY KEY (Guid, Id)
             var ydbCommand = new YdbCommand(ydbConnection)
             {
                 CommandText = $"""
-                               INSERT INTO `{SloTable.Name}` (Guid, Id, PayloadStr, PayloadDouble, PayloadTimestamp)
+                               UPSERT INTO `{SloTable.Name}` (Guid, Id, PayloadStr, PayloadDouble, PayloadTimestamp)
                                VALUES (@Guid, @Id, @PayloadStr, @PayloadDouble, @PayloadTimestamp)
                                """,
                 CommandTimeout = writeTimeout,
@@ -106,7 +92,7 @@ PRIMARY KEY (Guid, Id)
             };
 
             await ydbCommand.ExecuteNonQueryAsync();
-        }, context);
+        }, new Context());
 
 
         return (policyResult.Context.TryGetValue("RetryCount", out var countAttempts) ? (int)countAttempts : 1,
@@ -116,16 +102,9 @@ PRIMARY KEY (Guid, Id)
     protected override async Task<(int, StatusCode, object?)> Select(
         YdbDataSource client,
         (Guid Guid, int Id) select,
-        int readTimeout,
-        Counter? errorsTotal = null
+        int readTimeout
     )
     {
-        var context = new Context();
-        if (errorsTotal != null)
-        {
-            context["errorsTotal"] = errorsTotal;
-        }
-
         var attempts = 0;
         var policyResult = await _policy.ExecuteAndCaptureAsync(async _ =>
         {
@@ -147,7 +126,7 @@ PRIMARY KEY (Guid, Id)
             };
 
             return await ydbCommand.ExecuteScalarAsync();
-        }, context);
+        }, new Context());
 
         return (attempts, ((YdbException)policyResult.FinalException)?.Code ?? StatusCode.Success, policyResult.Result);
     }
diff --git a/slo/src/EF/SloTableContext.cs b/slo/src/EF/SloTableContext.cs
index 40a3fdef..ad4d265c 100644
--- a/slo/src/EF/SloTableContext.cs
+++ b/slo/src/EF/SloTableContext.cs
@@ -2,7 +2,6 @@
 using Internal;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.Infrastructure;
-using Prometheus;
 using Ydb.Sdk;
 
 namespace EF;
@@ -27,8 +26,8 @@ int operationTimeout
     protected override async Task<(int, StatusCode)> Save(
         PooledDbContextFactory<TableDbContext> client,
         SloTable sloTable,
-        int writeTimeout,
-        Counter? errorsTotal = null)
+        int writeTimeout
+    )
     {
         await using var dbContext = await client.CreateDbContextAsync();
         dbContext.SloEntities.Add(sloTable);
@@ -40,8 +39,7 @@ int operationTimeout
     protected override async Task<(int, StatusCode, object?)> Select(
         PooledDbContextFactory<TableDbContext> client,
         (Guid Guid, int Id) select,
-        int readTimeout,
-        Counter? errorsTotal = null
+        int readTimeout
     )
     {
         await using var dbContext = await client.CreateDbContextAsync();
diff --git a/slo/src/Internal/SloTableContext.cs b/slo/src/Internal/SloTableContext.cs
index 08bf5273..a9d05187 100644
--- a/slo/src/Internal/SloTableContext.cs
+++ b/slo/src/Internal/SloTableContext.cs
@@ -132,7 +132,7 @@ public async Task Run(RunConfig runConfig)
         return;
 
         Task ShootingTask(RateLimiter rateLimitPolicy, string operationType,
-            Func<T, RunConfig, Counter?, Task<(int, StatusCode)>> action)
+            Func<T, RunConfig, Task<(int, StatusCode)>> action)
         {
             var metricFactory = Metrics.WithLabels(new Dictionary<string, string>
                 {
@@ -219,7 +219,7 @@ Task ShootingTask(RateLimiter rateLimitPolicy, string operationType,
                         {
                             pendingOperations.Inc();
                             var sw = Stopwatch.StartNew();
-                            var (attempts, statusCode) = await action(client, runConfig, errorsTotal);
+                            var (attempts, statusCode) = await action(client, runConfig);
                             sw.Stop();
 
                             retryAttempts.Set(attempts);
@@ -251,15 +251,13 @@ Task ShootingTask(RateLimiter rateLimitPolicy, string operationType,
     }
 
     // return attempt count & StatusCode operation
-    protected abstract Task<(int, StatusCode)> Save(T client, SloTable sloTable, int writeTimeout,
-        Counter? errorsTotal = null);
+    protected abstract Task<(int, StatusCode)> Save(T client, SloTable sloTable, int writeTimeout);
 
-    protected abstract Task<(int, StatusCode, object?)> Select(T client, (Guid Guid, int Id) select, int readTimeout,
-        Counter? errorsTotal = null);
+    protected abstract Task<(int, StatusCode, object?)> Select(T client, (Guid Guid, int Id) select, int readTimeout);
 
     protected abstract Task<int> SelectCount(T client);
 
-    private Task<(int, StatusCode)> Save(T client, Config config, Counter? errorsTotal = null)
+    private Task<(int, StatusCode)> Save(T client, Config config)
     {
         const int minSizeStr = 20;
         const int maxSizeStr = 40;
@@ -276,14 +274,14 @@ Task ShootingTask(RateLimiter rateLimitPolicy, string operationType,
             PayloadTimestamp = DateTime.Now
         };
 
-        return Save(client, sloTable, config.WriteTimeout, errorsTotal);
+        return Save(client, sloTable, config.WriteTimeout);
     }
 
-    private async Task<(int, StatusCode)> Select(T client, RunConfig config, Counter? errorsTotal = null)
+    private async Task<(int, StatusCode)> Select(T client, RunConfig config)
     {
         var id = Random.Shared.Next(_maxId);
         var (attempts, code, _) =
-            await Select(client, new ValueTuple<Guid, int>(GuidFromInt(id), id), config.ReadTimeout, errorsTotal);
+            await Select(client, new ValueTuple<Guid, int>(GuidFromInt(id), id), config.ReadTimeout);
 
         return (attempts, code);
     }