diff --git a/ydb/core/kqp/gateway/behaviour/tablestore/manager.cpp b/ydb/core/kqp/gateway/behaviour/tablestore/manager.cpp
index 844ef19344db..a221a60ffd70 100644
--- a/ydb/core/kqp/gateway/behaviour/tablestore/manager.cpp
+++ b/ydb/core/kqp/gateway/behaviour/tablestore/manager.cpp
@@ -31,6 +31,9 @@ NThreading::TFuture<TTableStoreManager::TYqlConclusionStatus> TTableStoreManager
             return NThreading::MakeFuture<TYqlConclusionStatus>(TYqlConclusionStatus::Fail("not implemented"));
         case EActivityType::Alter:
         try {
+            if (!AppData()->ColumnShardConfig.GetAlterObjectEnabled()) {
+                return NThreading::MakeFuture<TYqlConclusionStatus>(TYqlConclusionStatus::Fail("ALTER OBJECT is disabled for column tables"));
+            }
             auto actionName = settings.GetFeaturesExtractor().Extract("ACTION");
             if (!actionName) {
                 return NThreading::MakeFuture<TYqlConclusionStatus>(TYqlConclusionStatus::Fail("can't find ACTION parameter"));
diff --git a/ydb/core/kqp/ut/common/kqp_ut_common.h b/ydb/core/kqp/ut/common/kqp_ut_common.h
index 5e392069872a..1a7bd65c5a9d 100644
--- a/ydb/core/kqp/ut/common/kqp_ut_common.h
+++ b/ydb/core/kqp/ut/common/kqp_ut_common.h
@@ -121,6 +121,10 @@ struct TKikimrSettings: public TTestFeatureFlagsHolder<TKikimrSettings> {
     TKikimrSettings& SetUseRealThreads(bool value) { UseRealThreads = value; return *this; };
     TKikimrSettings& SetEnableForceFollowers(bool value) { EnableForceFollowers = value; return *this; };
     TKikimrSettings& SetS3ActorsFactory(std::shared_ptr<NYql::NDq::IS3ActorsFactory> value) { S3ActorsFactory = std::move(value); return *this; };
+    TKikimrSettings& SetColumnShardAlterObjectEnabled(bool enable) {
+            AppConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(enable);
+            return *this;
+    }
 };
 
 class TKikimrRunner {
diff --git a/ydb/core/kqp/ut/olap/aggregations_ut.cpp b/ydb/core/kqp/ut/olap/aggregations_ut.cpp
index 5a851b3ab6b7..01f7b8e2a64e 100644
--- a/ydb/core/kqp/ut/olap/aggregations_ut.cpp
+++ b/ydb/core/kqp/ut/olap/aggregations_ut.cpp
@@ -14,6 +14,7 @@ namespace NKikimr::NKqp {
 Y_UNIT_TEST_SUITE(KqpOlapAggregations) {
     Y_UNIT_TEST(Aggregation) {
         auto settings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
             .SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
 
diff --git a/ydb/core/kqp/ut/olap/blobs_sharing_ut.cpp b/ydb/core/kqp/ut/olap/blobs_sharing_ut.cpp
index 4db334e774fa..da3a403f19b8 100644
--- a/ydb/core/kqp/ut/olap/blobs_sharing_ut.cpp
+++ b/ydb/core/kqp/ut/olap/blobs_sharing_ut.cpp
@@ -71,7 +71,10 @@ Y_UNIT_TEST_SUITE(KqpOlapBlobsSharing) {
     TKikimrSettings GetKikimrSettings() {
         NKikimrConfig::TFeatureFlags featureFlags;
         featureFlags.SetEnableAlterShardingInColumnShard(true);
-        return TKikimrSettings().SetWithSampleTables(false).SetFeatureFlags(featureFlags);
+        return TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false)
+            .SetFeatureFlags(featureFlags);
     }
 
     class TSharingDataTestCase {
diff --git a/ydb/core/kqp/ut/olap/compression_ut.cpp b/ydb/core/kqp/ut/olap/compression_ut.cpp
index b325324a1f3d..4b4ed13264cf 100644
--- a/ydb/core/kqp/ut/olap/compression_ut.cpp
+++ b/ydb/core/kqp/ut/olap/compression_ut.cpp
@@ -4,7 +4,10 @@ namespace NKikimr::NKqp {
 
 Y_UNIT_TEST_SUITE(KqpOlapCompression) {
     Y_UNIT_TEST(DisabledAlterCompression) {
-        TKikimrSettings settings = TKikimrSettings().SetWithSampleTables(false).SetEnableOlapCompression(false);
+        auto settings = TKikimrSettings()
+            .SetEnableOlapCompression(false)
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TTestHelper testHelper(settings);
         TVector<TTestHelper::TColumnSchema> schema = {
             TTestHelper::TColumnSchema().SetName("pk_int").SetType(NScheme::NTypeIds::Uint64).SetNullable(false)
@@ -28,7 +31,9 @@ Y_UNIT_TEST_SUITE(KqpOlapCompression) {
     }
 
     Y_UNIT_TEST(OffCompression) {
-        TKikimrSettings settings = TKikimrSettings().SetWithSampleTables(false);
+        auto settings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TTestHelper testHelper(settings);
         TVector<TTestHelper::TColumnSchema> schema = {
             TTestHelper::TColumnSchema().SetName("pk_int").SetType(NScheme::NTypeIds::Uint64).SetNullable(false)
@@ -47,7 +52,9 @@ Y_UNIT_TEST_SUITE(KqpOlapCompression) {
     }
 
     Y_UNIT_TEST(TestAlterCompressionTableInTableStore) {
-        TKikimrSettings settings = TKikimrSettings().SetWithSampleTables(false);
+        TKikimrSettings settings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TTestHelper testHelper(settings);
         TVector<TTestHelper::TColumnSchema> schema = {
             TTestHelper::TColumnSchema().SetName("pk_int").SetType(NScheme::NTypeIds::Uint64).SetNullable(false)
diff --git a/ydb/core/kqp/ut/olap/indexes_ut.cpp b/ydb/core/kqp/ut/olap/indexes_ut.cpp
index f86d7f7fc9bd..3961863dc89f 100644
--- a/ydb/core/kqp/ut/olap/indexes_ut.cpp
+++ b/ydb/core/kqp/ut/olap/indexes_ut.cpp
@@ -15,7 +15,9 @@ namespace NKikimr::NKqp {
 
 Y_UNIT_TEST_SUITE(KqpOlapIndexes) {
     Y_UNIT_TEST(IndexesActualization) {
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        auto settings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
 
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NYDBTest::NColumnShard::TController>();
@@ -96,7 +98,9 @@ Y_UNIT_TEST_SUITE(KqpOlapIndexes) {
     }
 
     Y_UNIT_TEST(CountMinSketchIndex) {
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        auto settings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
 
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NYDBTest::NColumnShard::TController>();
@@ -239,7 +243,9 @@ Y_UNIT_TEST_SUITE(KqpOlapIndexes) {
     }
 
     Y_UNIT_TEST(SchemeActualizationOnceOnStart) {
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        auto settings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
 
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NYDBTest::NColumnShard::TController>();
@@ -338,7 +344,9 @@ Y_UNIT_TEST_SUITE(KqpOlapIndexes) {
 
     public:
         TTestIndexesScenario& Initialize() {
-            Settings = TKikimrSettings().SetWithSampleTables(false);
+            Settings = TKikimrSettings()
+                .SetColumnShardAlterObjectEnabled(true)
+                .SetWithSampleTables(false);
             Settings.AppConfig.MutableColumnShardConfig()->SetReaderClassName("SIMPLE");
             Kikimr = std::make_unique<TKikimrRunner>(Settings);
             return *this;
@@ -552,7 +560,9 @@ Y_UNIT_TEST_SUITE(KqpOlapIndexes) {
     }
 
     Y_UNIT_TEST(IndexesModificationError) {
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        auto settings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
 
         TLocalHelper(kikimr).CreateTestOlapTable();
diff --git a/ydb/core/kqp/ut/olap/kqp_olap_ut.cpp b/ydb/core/kqp/ut/olap/kqp_olap_ut.cpp
index 34b9daa241de..58bf88da603c 100644
--- a/ydb/core/kqp/ut/olap/kqp_olap_ut.cpp
+++ b/ydb/core/kqp/ut/olap/kqp_olap_ut.cpp
@@ -218,6 +218,22 @@ Y_UNIT_TEST_SUITE(KqpOlap) {
         };
     }
 
+    Y_UNIT_TEST(AlterObjectDisabled) {
+        auto settings = TKikimrSettings()
+             .SetWithSampleTables(false);
+        TKikimrRunner kikimr(settings);        
+        TLocalHelper(kikimr).CreateTestOlapTableWithoutStore();
+
+        auto tableClient = kikimr.GetTableClient();
+        auto session = tableClient.CreateSession().GetValueSync().GetSession();
+        auto alterResult = session.ExecuteSchemeQuery(
+            "ALTER OBJECT `/Root/olapTable` (TYPE TABLE) SET (ACTION=ALTER_COLUMN, NAME=message, `SERIALIZER.CLASS_NAME`=`ARROW_SERIALIZER`, `COMPRESSION.TYPE`=`zstd`, `COMPRESSION.LEVEL`=`4`)"
+        ).GetValueSync();
+        UNIT_ASSERT_VALUES_EQUAL(alterResult.GetStatus(), NYdb::EStatus::GENERIC_ERROR);
+        UNIT_ASSERT_STRING_CONTAINS_C(alterResult.GetIssues().ToString(), "Error: ALTER OBJECT is disabled for column tables", alterResult.GetIssues().ToString());
+
+    }
+
     Y_UNIT_TEST(SimpleQueryOlap) {
         auto settings = TKikimrSettings()
             .SetWithSampleTables(false);
@@ -2640,7 +2656,9 @@ Y_UNIT_TEST_SUITE(KqpOlap) {
     }
 
     Y_UNIT_TEST(CompactionPlanner) {
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        auto settings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
 
         TLocalHelper(kikimr).CreateTestOlapTable();
@@ -2724,7 +2742,9 @@ Y_UNIT_TEST_SUITE(KqpOlap) {
     }
 
     Y_UNIT_TEST(MetadataMemoryManager) {
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        auto settings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
 
         TLocalHelper(kikimr).CreateTestOlapTable();
@@ -2781,7 +2801,9 @@ Y_UNIT_TEST_SUITE(KqpOlap) {
     }
 
     Y_UNIT_TEST(NormalizeAbsentColumn) {
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        auto settings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
         TLocalHelper testHelper(kikimr);
 
diff --git a/ydb/core/kqp/ut/olap/sparsed_ut.cpp b/ydb/core/kqp/ut/olap/sparsed_ut.cpp
index 76ec86c974ff..147856f2d1e2 100644
--- a/ydb/core/kqp/ut/olap/sparsed_ut.cpp
+++ b/ydb/core/kqp/ut/olap/sparsed_ut.cpp
@@ -16,7 +16,9 @@ Y_UNIT_TEST_SUITE(KqpOlapSparsed) {
 
     class TSparsedDataTest {
     private:
-        const TKikimrSettings Settings = TKikimrSettings().SetWithSampleTables(false);
+        const TKikimrSettings Settings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TKikimrRunner Kikimr;
         NKikimr::NYDBTest::TControllers::TGuard<NKikimr::NYDBTest::NColumnShard::TController> CSController;
         const TString StoreName;
@@ -304,7 +306,9 @@ Y_UNIT_TEST_SUITE(KqpOlapSparsed) {
     }
 
     Y_UNIT_TEST(AccessorActualization) {
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        auto settings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
 
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NYDBTest::NColumnShard::TController>();
diff --git a/ydb/core/kqp/ut/olap/statistics_ut.cpp b/ydb/core/kqp/ut/olap/statistics_ut.cpp
index 094fefbd4028..3000e243b9ea 100644
--- a/ydb/core/kqp/ut/olap/statistics_ut.cpp
+++ b/ydb/core/kqp/ut/olap/statistics_ut.cpp
@@ -8,7 +8,9 @@ Y_UNIT_TEST_SUITE(KqpOlapStatistics) {
     Y_UNIT_TEST(StatsUsage) {
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NYDBTest::NColumnShard::TController>();
         {
-            auto settings = TKikimrSettings().SetWithSampleTables(false);
+            auto settings = TKikimrSettings()
+                .SetColumnShardAlterObjectEnabled(true)
+                .SetWithSampleTables(false);
             TKikimrRunner kikimr(settings);
             Tests::NCommon::TLoggerInit(kikimr).Initialize();
             TTypedLocalHelper helper("Utf8", kikimr);
@@ -49,7 +51,9 @@ Y_UNIT_TEST_SUITE(KqpOlapStatistics) {
     Y_UNIT_TEST(StatsUsageNotPK) {
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NYDBTest::NColumnShard::TController>();
         {
-            auto settings = TKikimrSettings().SetWithSampleTables(false);
+            auto settings = TKikimrSettings()
+                .SetColumnShardAlterObjectEnabled(true)
+                .SetWithSampleTables(false);
             TKikimrRunner kikimr(settings);
             Tests::NCommon::TLoggerInit(kikimr).Initialize();
             TTypedLocalHelper helper("Utf8", kikimr);
@@ -87,7 +91,9 @@ Y_UNIT_TEST_SUITE(KqpOlapStatistics) {
     Y_UNIT_TEST(StatsUsageWithTTL) {
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NYDBTest::NColumnShard::TController>();
         {
-            auto settings = TKikimrSettings().SetWithSampleTables(false);
+            auto settings = TKikimrSettings()
+                .SetColumnShardAlterObjectEnabled(true)
+                .SetWithSampleTables(false);
             TKikimrRunner kikimr(settings);
             Tests::NCommon::TLoggerInit(kikimr).Initialize();
             TTypedLocalHelper helper("Utf8", kikimr);
diff --git a/ydb/core/kqp/ut/olap/sys_view_ut.cpp b/ydb/core/kqp/ut/olap/sys_view_ut.cpp
index 9d12b54efab6..c0c362a66635 100644
--- a/ydb/core/kqp/ut/olap/sys_view_ut.cpp
+++ b/ydb/core/kqp/ut/olap/sys_view_ut.cpp
@@ -117,6 +117,7 @@ Y_UNIT_TEST_SUITE(KqpOlapSysView) {
             auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NOlap::TWaitCompactionController>();
             csController->SetOverrideBlobSplitSettings(NOlap::NSplitter::TSplitSettings());
             auto settings = TKikimrSettings()
+                .SetColumnShardAlterObjectEnabled(true)
                 .SetWithSampleTables(false);
             TKikimrRunner kikimr(settings);
             Tests::NCommon::TLoggerInit(kikimr).Initialize();
@@ -137,6 +138,7 @@ Y_UNIT_TEST_SUITE(KqpOlapSysView) {
         const ui32 groupsCount = 512;
         {
             auto settings = TKikimrSettings()
+                .SetColumnShardAlterObjectEnabled(true)
                 .SetWithSampleTables(false);
             TKikimrRunner kikimr(settings);
             Tests::NCommon::TLoggerInit(kikimr).Initialize();
@@ -192,6 +194,7 @@ Y_UNIT_TEST_SUITE(KqpOlapSysView) {
         ui64 bytesPK1;
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NOlap::TWaitCompactionController>();
         auto settings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
             .SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
         Tests::NCommon::TLoggerInit(kikimr).Initialize();
@@ -228,7 +231,9 @@ Y_UNIT_TEST_SUITE(KqpOlapSysView) {
         ui64 rawBytes1;
         ui64 bytes1;
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NOlap::TWaitCompactionController>();
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        auto settings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
         Tests::NCommon::TLoggerInit(kikimr).Initialize();
         TTypedLocalHelper helper("Utf8", kikimr);
@@ -260,6 +265,7 @@ Y_UNIT_TEST_SUITE(KqpOlapSysView) {
         ui64 bytes1;
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NOlap::TWaitCompactionController>();
         auto settings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
             .SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
         Tests::NCommon::TLoggerInit(kikimr).Initialize();
@@ -298,7 +304,9 @@ Y_UNIT_TEST_SUITE(KqpOlapSysView) {
         ui64 bytes1;
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NOlap::TWaitCompactionController>();
         csController->SetSmallSizeDetector(Max<ui32>());
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        auto settings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
         Tests::NCommon::TLoggerInit(kikimr).Initialize();
         TTypedLocalHelper helper("Utf8", kikimr);
diff --git a/ydb/core/kqp/ut/olap/tiering_ut.cpp b/ydb/core/kqp/ut/olap/tiering_ut.cpp
index 40b4c549542d..8da5e42540dd 100644
--- a/ydb/core/kqp/ut/olap/tiering_ut.cpp
+++ b/ydb/core/kqp/ut/olap/tiering_ut.cpp
@@ -27,10 +27,10 @@ class TTestEvictionBase {
     void RunTest() {
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NOlap::TWaitCompactionController>();
         csController->SetSkipSpecialCheckForEvict(true);
-
-        TKikimrSettings runnerSettings;
-        runnerSettings.WithSampleTables = false;
-        TestHelper.emplace(runnerSettings);
+        auto settings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
+        TestHelper.emplace(settings);
         TLocalHelper localHelper(TestHelper->GetKikimr());
         // TestHelper->GetRuntime().SetLogPriority(NKikimrServices::FLAT_TX_SCHEMESHARD, NActors::NLog::PRI_DEBUG);
         // TestHelper->GetRuntime().SetLogPriority(NKikimrServices::TX_COLUMNSHARD, NActors::NLog::PRI_DEBUG);
diff --git a/ydb/core/kqp/ut/olap/write_ut.cpp b/ydb/core/kqp/ut/olap/write_ut.cpp
index 56b54a0dc6eb..5febb351814c 100644
--- a/ydb/core/kqp/ut/olap/write_ut.cpp
+++ b/ydb/core/kqp/ut/olap/write_ut.cpp
@@ -172,7 +172,9 @@ Y_UNIT_TEST_SUITE(KqpOlapWrite) {
     }
 
     Y_UNIT_TEST(DefaultValues) {
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        auto settings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
         Tests::NCommon::TLoggerInit(kikimr).Initialize();
         TTypedLocalHelper helper("Utf8", kikimr);
diff --git a/ydb/core/kqp/ut/scheme/kqp_scheme_ut.cpp b/ydb/core/kqp/ut/scheme/kqp_scheme_ut.cpp
index 91c9356b8df2..1583fbbccb6f 100644
--- a/ydb/core/kqp/ut/scheme/kqp_scheme_ut.cpp
+++ b/ydb/core/kqp/ut/scheme/kqp_scheme_ut.cpp
@@ -5518,8 +5518,9 @@ Y_UNIT_TEST_SUITE(KqpScheme) {
     }
 
     Y_UNIT_TEST(AlterColumnTableTtl) {
-        TKikimrSettings runnerSettings;
-        runnerSettings.WithSampleTables = false;
+        auto runnerSettings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TKikimrRunner kikimr(runnerSettings);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
@@ -9222,9 +9223,10 @@ Y_UNIT_TEST_SUITE(KqpOlapScheme) {
     }
 
     Y_UNIT_TEST(AddColumnWithTtl) {
-        TKikimrSettings runnerSettings;
-        runnerSettings.WithSampleTables = false;
-        TTestHelper testHelper(runnerSettings);
+        auto settings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
+        TTestHelper testHelper(settings);
 
         TVector<TTestHelper::TColumnSchema> schema = {
             TTestHelper::TColumnSchema().SetName("id").SetType(NScheme::NTypeIds::Int32).SetNullable(false),
@@ -9484,8 +9486,9 @@ Y_UNIT_TEST_SUITE(KqpOlapScheme) {
     }
 */
     Y_UNIT_TEST(AddColumnWithStore) {
-        TKikimrSettings runnerSettings;
-        runnerSettings.WithSampleTables = false;
+        auto runnerSettings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TTestHelper testHelper(runnerSettings);
 
         TVector<TTestHelper::TColumnSchema> schema = {
@@ -9548,8 +9551,9 @@ Y_UNIT_TEST_SUITE(KqpOlapScheme) {
     }
 
     Y_UNIT_TEST(AddPgColumnWithStore) {
-        TKikimrSettings runnerSettings;
-        runnerSettings.WithSampleTables = false;
+        auto runnerSettings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TTestHelper testHelper(runnerSettings);
 
         TVector<TTestHelper::TColumnSchema> schema = {
@@ -9890,8 +9894,9 @@ Y_UNIT_TEST_SUITE(KqpOlapScheme) {
     }
 
     Y_UNIT_TEST(DropTtlColumn) {
-        TKikimrSettings runnerSettings;
-        runnerSettings.WithSampleTables = false;
+        auto runnerSettings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TTestHelper testHelper(runnerSettings);
 
         TVector<TTestHelper::TColumnSchema> schema = {
@@ -9955,8 +9960,9 @@ Y_UNIT_TEST_SUITE(KqpOlapScheme) {
     }
 
     Y_UNIT_TEST(DropColumnTableStoreErrors) {
-        TKikimrSettings runnerSettings;
-        runnerSettings.WithSampleTables = false;
+        auto runnerSettings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TTestHelper testHelper(runnerSettings);
 
         TVector<TTestHelper::TColumnSchema> schema = {
@@ -11406,8 +11412,9 @@ Y_UNIT_TEST_SUITE(KqpOlapScheme) {
     }
 
     Y_UNIT_TEST(DropColumnAndResetTtl) {
-        TKikimrSettings runnerSettings;
-        runnerSettings.WithSampleTables = false;
+        auto runnerSettings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TTestHelper testHelper(runnerSettings);
 
         TVector<TTestHelper::TColumnSchema> schema = {
@@ -11442,8 +11449,9 @@ Y_UNIT_TEST_SUITE(KqpOlapScheme) {
     }
 
     Y_UNIT_TEST(InitTtlSettingsOnShardStart) {
-        TKikimrSettings runnerSettings;
-        runnerSettings.WithSampleTables = false;
+        auto runnerSettings = TKikimrSettings()
+            .SetColumnShardAlterObjectEnabled(true)
+            .SetWithSampleTables(false);
         TTestHelper testHelper(runnerSettings);
 
         TVector<TTestHelper::TColumnSchema> schema = {
diff --git a/ydb/core/protos/config.proto b/ydb/core/protos/config.proto
index 0177bb18d762..8dc434773369 100644
--- a/ydb/core/protos/config.proto
+++ b/ydb/core/protos/config.proto
@@ -1810,6 +1810,7 @@ message TColumnShardConfig {
     optional NKikimrSchemeOp.EColumnCodec DefaultCompression = 36;
     optional int32 DefaultCompressionLevel = 37;
     optional uint64 MemoryLimitMergeOnCompactionRawData = 38 [default = 512000000];
+    optional bool AlterObjectEnabled = 39 [default = false];
 }
 
 message TSchemeShardConfig {
diff --git a/ydb/core/statistics/ut_common/ut_common.cpp b/ydb/core/statistics/ut_common/ut_common.cpp
index 667b522f85f2..d7c580f5fa41 100644
--- a/ydb/core/statistics/ut_common/ut_common.cpp
+++ b/ydb/core/statistics/ut_common/ut_common.cpp
@@ -36,6 +36,7 @@ TTestEnv::TTestEnv(ui32 staticNodes, ui32 dynamicNodes, bool useRealThreads)
     Settings->SetUseRealThreads(useRealThreads);
     Settings->AddStoragePoolType("hdd1");
     Settings->AddStoragePoolType("hdd2");
+    Settings->SetColumnShardAlterObjectEnabled(true);
 
     NKikimrConfig::TFeatureFlags featureFlags;
     featureFlags.SetEnableStatistics(true);
diff --git a/ydb/core/testlib/test_client.h b/ydb/core/testlib/test_client.h
index 142bfc3d52bb..a145e7fe4989 100644
--- a/ydb/core/testlib/test_client.h
+++ b/ydb/core/testlib/test_client.h
@@ -248,6 +248,10 @@ namespace Tests {
             return *this;
         }
 
+        TServerSettings& SetColumnShardAlterObjectEnabled(bool enable) {
+            AppConfig->MutableColumnShardConfig()->SetAlterObjectEnabled(enable);
+            return *this;
+        }
 
         // Add additional grpc services
         template <typename TService>
diff --git a/ydb/tests/olap/scenario/conftest.py b/ydb/tests/olap/scenario/conftest.py
index 797335b750ef..057931a7f6fa 100644
--- a/ydb/tests/olap/scenario/conftest.py
+++ b/ydb/tests/olap/scenario/conftest.py
@@ -31,7 +31,11 @@ def __init__(self, endpoint, database):
             self._database = database
             self._mon_port = 8765
         else:
-            config = KikimrConfigGenerator()
+            config = KikimrConfigGenerator(
+                column_shard_config={
+                    'alter_object_enabled': True,
+                }
+            )
             cluster = KiKiMR(configurator=config)
             cluster.start()
             node = cluster.nodes[1]