diff --git a/core/src/db/CMakeLists.txt b/core/src/db/CMakeLists.txt
index 57acd0c66da2a66f4fa687e1bd2a495efe48bc72..7408bbe245e9fcc4bcb0c18b33178eeb5908eca6 100644
--- a/core/src/db/CMakeLists.txt
+++ b/core/src/db/CMakeLists.txt
@@ -122,6 +122,7 @@ endif ()
 # **************************** Link Libraries with milvus engine ****************************
 target_link_libraries( milvus_engine
                PUBLIC  knowhere
+                       server
                        segment
                        cache
                        codecs
diff --git a/core/src/db/DBImpl.cpp b/core/src/db/DBImpl.cpp
index fcd6c54f0d75b144fc927f78f528c19470fb79b5..f89137e998f448cc27e78b32e05dfb6b8db3922b 100644
--- a/core/src/db/DBImpl.cpp
+++ b/core/src/db/DBImpl.cpp
@@ -35,6 +35,7 @@
 #include "scheduler/job/SearchJob.h"
 #include "segment/SegmentReader.h"
 #include "segment/SegmentWriter.h"
+#include "server/ValidationUtil.h"
 #include "utils/Exception.h"
 #include "utils/StringHelpFunctions.h"
 #include "utils/TimeRecorder.h"
@@ -312,6 +313,7 @@ DBImpl::HasPartition(const std::string& collection_name, const std::string& part
     CHECK_INITIALIZED;
 
     snapshot::ScopedSnapshotT ss;
+    STATUS_CHECK(server::ValidatePartitionTags({partition_tag}));
     STATUS_CHECK(snapshot::Snapshots::GetInstance().GetSnapshot(ss, collection_name));
 
     auto partition_tags = std::move(ss->GetPartitionNames());
diff --git a/core/src/server/ValidationUtil.cpp b/core/src/server/ValidationUtil.cpp
index 0870f444329e1824fb9616dfb37cae1c0f6af16b..6d3b91047d2a0bb79f44b056a7b9f4c5471a5380 100644
--- a/core/src/server/ValidationUtil.cpp
+++ b/core/src/server/ValidationUtil.cpp
@@ -116,7 +116,7 @@ ValidateCollectionName(const std::string& collection_name) {
     int64_t table_name_size = collection_name.size();
     for (int64_t i = 1; i < table_name_size; ++i) {
         char name_char = collection_name[i];
-        if (name_char != '_' && std::isalnum(name_char) == 0) {
+        if (name_char != '_' && name_char != '$' && std::isalnum(name_char) == 0) {
             std::string msg = invalid_msg + "Collection name can only contain numbers, letters, and underscores.";
             LOG_SERVER_ERROR_ << msg;
             return Status(SERVER_INVALID_COLLECTION_NAME, msg);
@@ -424,6 +424,40 @@ ValidateSearchTopk(int64_t top_k) {
 Status
 ValidatePartitionTags(const std::vector<std::string>& partition_tags) {
     for (const std::string& tag : partition_tags) {
+        // Partition nametag shouldn't be empty.
+        if (tag.empty()) {
+            std::string msg = "Partition tag should not be empty.";
+            LOG_SERVER_ERROR_ << msg;
+            return Status(SERVER_INVALID_PARTITION_TAG, msg);
+        }
+
+        std::string invalid_msg = "Invalid partition tag: " + tag + ". ";
+        // Partition tag size shouldn't exceed 255.
+        if (tag.size() > engine::MAX_NAME_LENGTH) {
+            std::string msg = invalid_msg + "The length of a partition tag must be less than 255 characters.";
+            LOG_SERVER_ERROR_ << msg;
+            return Status(SERVER_INVALID_PARTITION_TAG, msg);
+        }
+
+        // Partition tag first character should be underscore or character.
+        char first_char = tag[0];
+        if (first_char != '_' && std::isalnum(first_char) == 0) {
+            std::string msg = invalid_msg + "The first character of a partition tag must be an underscore or letter.";
+            LOG_SERVER_ERROR_ << msg;
+            return Status(SERVER_INVALID_PARTITION_TAG, msg);
+        }
+
+        int64_t tag_size = tag.size();
+        for (int64_t i = 1; i < tag_size; ++i) {
+            char name_char = tag[i];
+            if (name_char != '_' && name_char != '$' && std::isalnum(name_char) == 0) {
+                std::string msg = invalid_msg + "Partition tag can only contain numbers, letters, and underscores.";
+                LOG_SERVER_ERROR_ << msg;
+                return Status(SERVER_INVALID_PARTITION_TAG, msg);
+            }
+        }
+
+#if 0
         // trim side-blank of tag, only compare valid characters
         // for example: " ab cd " is treated as "ab cd"
         std::string valid_tag = tag;
@@ -441,18 +475,7 @@ ValidatePartitionTags(const std::vector<std::string>& partition_tags) {
             LOG_SERVER_ERROR_ << msg;
             return Status(SERVER_INVALID_PARTITION_TAG, msg);
         }
-    }
-
-    return Status::OK();
-}
-
-Status
-ValidateInsertDataSize(const engine::DataChunkPtr& data) {
-    int64_t chunk_size = engine::utils::GetSizeOfChunk(data);
-    if (chunk_size > engine::MAX_INSERT_DATA_SIZE) {
-        std::string msg = "The amount of data inserted each time cannot exceed " +
-                          std::to_string(engine::MAX_INSERT_DATA_SIZE / engine::MB) + " MB";
-        return Status(SERVER_INVALID_ROWRECORD_ARRAY, msg);
+#endif
     }
 
     return Status::OK();
diff --git a/tests/milvus_python_test/collection/test_collection_stats.py b/tests/milvus_python_test/collection/test_collection_stats.py
index faa8295d1629dac548173a105de363bdce74f1e2..b6e14d56bf57a1f0d3e7182b5f8506eeebff7c1a 100644
--- a/tests/milvus_python_test/collection/test_collection_stats.py
+++ b/tests/milvus_python_test/collection/test_collection_stats.py
@@ -11,7 +11,7 @@ segment_row_count = 5000
 nprobe = 1
 top_k = 1
 epsilon = 0.0001
-tag = "1970-01-01"
+tag = "1970_01_01"
 nb = 6000
 nlist = 1024
 collection_id = "collection_stats"
diff --git a/tests/milvus_python_test/entity/test_delete.py b/tests/milvus_python_test/entity/test_delete.py
index 2b0bf382ad21a8b5d73e5f64944011b4850df535..13bb9b5faaa73ebd184f59009ca8aead93f944fc 100644
--- a/tests/milvus_python_test/entity/test_delete.py
+++ b/tests/milvus_python_test/entity/test_delete.py
@@ -13,7 +13,7 @@ dim = 128
 segment_row_count = 5000
 collection_id = "test_delete"
 DELETE_TIMEOUT = 60
-tag = "1970-01-01"
+tag = "1970_01_01"
 nb = 6000
 field_name = default_float_vec_field_name
 entity = gen_entities(1)
diff --git a/tests/milvus_python_test/entity/test_get_entity_by_id.py b/tests/milvus_python_test/entity/test_get_entity_by_id.py
index 753e53a172a4e0f0be773436995c702d45a79a26..3239117fb5cbea37001dea7e742641add48b82b5 100644
--- a/tests/milvus_python_test/entity/test_get_entity_by_id.py
+++ b/tests/milvus_python_test/entity/test_get_entity_by_id.py
@@ -14,7 +14,7 @@ dim = 128
 segment_row_count = 5000
 collection_id = "test_get"
 DELETE_TIMEOUT = 60
-tag = "1970-01-01"
+tag = "1970_01_01"
 nb = 6000
 entity = gen_entities(1)
 binary_entity = gen_binary_entities(1)
diff --git a/tests/milvus_python_test/entity/test_insert.py b/tests/milvus_python_test/entity/test_insert.py
index 682bc3c2ab6056a05ba1ceac222a3fb8e40251b6..6dd9189b6caae50bddca02943017326bb402b49b 100644
--- a/tests/milvus_python_test/entity/test_insert.py
+++ b/tests/milvus_python_test/entity/test_insert.py
@@ -12,7 +12,7 @@ dim = 128
 segment_row_count = 5000
 collection_id = "test_insert"
 ADD_TIMEOUT = 60
-tag = "1970-01-01"
+tag = "1970_01_01"
 insert_interval_time = 1.5
 nb = 6000
 field_name = default_float_vec_field_name 
diff --git a/tests/milvus_python_test/entity/test_list_id_in_segment.py b/tests/milvus_python_test/entity/test_list_id_in_segment.py
index 37778747e75f8723c6dc141ccd80f075cf53aa10..86902a72556d22ef7d2160dc5f2cc1efe6a54ce4 100644
--- a/tests/milvus_python_test/entity/test_list_id_in_segment.py
+++ b/tests/milvus_python_test/entity/test_list_id_in_segment.py
@@ -10,7 +10,7 @@ from utils import *
 dim = 128
 segment_row_count = 100000
 nb = 6000
-tag = "1970-01-01"
+tag = "1970_01_01"
 field_name = default_float_vec_field_name
 binary_field_name = default_binary_vec_field_name
 collection_id = "list_id_in_segment"
diff --git a/tests/milvus_python_test/entity/test_search.py b/tests/milvus_python_test/entity/test_search.py
index 6f868d3906ba7f2108d25273d1521d4294c687ac..0a05215aa4f6fb92244a933a8e3a3ae1ea14eb17 100644
--- a/tests/milvus_python_test/entity/test_search.py
+++ b/tests/milvus_python_test/entity/test_search.py
@@ -14,7 +14,7 @@ dim = 128
 segment_row_count = 5000
 top_k_limit = 2048
 collection_id = "search"
-tag = "1970-01-01"
+tag = "1970_01_01"
 insert_interval_time = 1.5
 nb = 6000
 top_k = 10
diff --git a/tests/milvus_python_test/stability/test_mysql.py b/tests/milvus_python_test/stability/test_mysql.py
index b4c87ae126e490ae9d38d588af08b88d33522b9b..2c6a3f693e6af4948ea7e9be907ef48a160aab43 100644
--- a/tests/milvus_python_test/stability/test_mysql.py
+++ b/tests/milvus_python_test/stability/test_mysql.py
@@ -12,7 +12,7 @@ dim = 128
 index_file_size = 10
 collection_id = "mysql_failure"
 nprobe = 1
-tag = "1970-01-01"
+tag = "1970_01_01"
 
 
 class TestMysql:
diff --git a/tests/milvus_python_test/stability/test_restart.py b/tests/milvus_python_test/stability/test_restart.py
index d002dc40b9a3ec3f016603404544ba47083e7592..9d274a0f6a5f2dbf2ce78932cf2d5184cee5d44d 100644
--- a/tests/milvus_python_test/stability/test_restart.py
+++ b/tests/milvus_python_test/stability/test_restart.py
@@ -13,7 +13,7 @@ dim = 128
 index_file_size = 10
 collection_id = "test_partition_restart"
 nprobe = 1
-tag = "1970-01-01"
+tag = "1970_01_01"
 
 
 class TestRestartBase:
diff --git a/tests/milvus_python_test/test_compact.py b/tests/milvus_python_test/test_compact.py
index 5bb43c16e76927c04525e0f7c39d80b07804b816..5895601078b58b98518c244a0218b164fb2eb82c 100644
--- a/tests/milvus_python_test/test_compact.py
+++ b/tests/milvus_python_test/test_compact.py
@@ -11,7 +11,7 @@ index_file_size = 10
 COMPACT_TIMEOUT = 180
 nprobe = 1
 top_k = 1
-tag = "1970-01-01"
+tag = "1970_01_01"
 nb = 6000
 nq = 2
 segment_row_count = 5000
diff --git a/tests/milvus_python_test/test_config.py b/tests/milvus_python_test/test_config.py
index 0dcc9b31113185d68a398a2ec1ac890c7bb78827..a0453e9caff78b1831a7c7f960f4f9c9d759fcdd 100644
--- a/tests/milvus_python_test/test_config.py
+++ b/tests/milvus_python_test/test_config.py
@@ -14,7 +14,7 @@ index_file_size = 10
 CONFIG_TIMEOUT = 80
 nprobe = 1
 top_k = 1
-tag = "1970-01-01"
+tag = "1970_01_01"
 nb = 6000
 
 
diff --git a/tests/milvus_python_test/test_flush.py b/tests/milvus_python_test/test_flush.py
index a64682b64928ebc7cc025eadf8d7c9364364c448..35e15d17aa8e55b8c725228ad9d7d14fa57454f6 100644
--- a/tests/milvus_python_test/test_flush.py
+++ b/tests/milvus_python_test/test_flush.py
@@ -12,7 +12,7 @@ index_file_size = 10
 collection_id = "test_flush"
 DELETE_TIMEOUT = 60
 nprobe = 1
-tag = "1970-01-01"
+tag = "1970_01_01"
 top_k = 1
 nb = 6000
 tag = "partition_tag"
diff --git a/tests/milvus_python_test/test_index.py b/tests/milvus_python_test/test_index.py
index 1c57ef7a505e8d401cfad2442c27637fb9412afc..8c33a359e75bc29c72fb19b8c0302c8635f4d16e 100644
--- a/tests/milvus_python_test/test_index.py
+++ b/tests/milvus_python_test/test_index.py
@@ -14,7 +14,7 @@ index_file_size = 10
 BUILD_TIMEOUT = 300
 nprobe = 1
 top_k = 5
-tag = "1970-01-01"
+tag = "1970_01_01"
 NLIST = 4046
 INVALID_NLIST = 100000000
 field_name = "float_vector"
diff --git a/tests/milvus_python_test/test_partition.py b/tests/milvus_python_test/test_partition.py
index 3bf685b93b78d887c320a9c2e588558d7ff7a253..81770147743d141aa98bf2b51a226022236b37b2 100644
--- a/tests/milvus_python_test/test_partition.py
+++ b/tests/milvus_python_test/test_partition.py
@@ -12,7 +12,7 @@ dim = 128
 segment_row_count = 5000
 collection_id = "partition"
 nprobe = 1
-tag = "1970-01-01"
+tag = "1970_01_01"
 TIMEOUT = 120
 nb = 6000
 tag = "partition_tag"
diff --git a/tests/milvus_python_test/test_wal.py b/tests/milvus_python_test/test_wal.py
index 286b8128ecf97e6405564d57709150c9b02a3bf9..2d0086134aa3b1d7df13f46e4f58ad3cac2a21f4 100644
--- a/tests/milvus_python_test/test_wal.py
+++ b/tests/milvus_python_test/test_wal.py
@@ -10,7 +10,7 @@ dim = 128
 collection_id = "test_wal"
 segment_row_count = 5000
 WAL_TIMEOUT = 60
-tag = "1970-01-01"
+tag = "1970_01_01"
 insert_interval_time = 1.5
 nb = 6000
 field_name = "float_vector"