diff --git a/ingestion/src/metadata/ingestion/source/database/mongodb/connection.py b/ingestion/src/metadata/ingestion/source/database/mongodb/connection.py
index 2c6f43e3989..f27a3c475ea 100644
--- a/ingestion/src/metadata/ingestion/source/database/mongodb/connection.py
+++ b/ingestion/src/metadata/ingestion/source/database/mongodb/connection.py
@@ -59,13 +59,13 @@ def test_connection(
 
     holder = SchemaHolder()
 
-    def test_get_databases(client: MongoClient, holder: SchemaHolder):
-        for database in client.list_database_names():
-            holder.database = database
+    def test_get_databases(client_: MongoClient, holder_: SchemaHolder):
+        for database in client_.list_database_names():
+            holder_.database = database
             break
 
-    def test_get_collections(client: MongoClient, holder: SchemaHolder):
-        database = client.get_database(holder.database)
+    def test_get_collections(client_: MongoClient, holder_: SchemaHolder):
+        database = client_.get_database(holder_.database)
         database.list_collection_names()
 
     test_fn = {
diff --git a/ingestion/src/metadata/ingestion/source/database/snowflake/connection.py b/ingestion/src/metadata/ingestion/source/database/snowflake/connection.py
index d11aa82d7bd..48e08300fd2 100644
--- a/ingestion/src/metadata/ingestion/source/database/snowflake/connection.py
+++ b/ingestion/src/metadata/ingestion/source/database/snowflake/connection.py
@@ -44,6 +44,7 @@ from metadata.ingestion.source.database.snowflake.queries import (
     SNOWFLAKE_GET_DATABASES,
     SNOWFLAKE_TEST_FETCH_TAG,
     SNOWFLAKE_TEST_GET_QUERIES,
+    SNOWFLAKE_TEST_GET_TABLES,
 )
 from metadata.utils.logger import ingestion_logger
 
@@ -145,7 +146,18 @@ def test_connection(
 ) -> None:
     """
     Test connection. This can be executed either as part
-    of a metadata workflow or during an Automation Workflow
+    of a metadata workflow or during an Automation Workflow.
+
+    Note how we run a custom GetTables query:
+
+        The default inspector `get_table_names` runs a SHOW which
+        has a limit on 10000 rows in the result set:
+        https://github.com/open-metadata/OpenMetadata/issues/12798
+
+        This can cause errors if we are running tests against schemas
+        with more tables than that. There is no issues during the metadata
+        ingestion since in metadata.py we are overriding the default
+        `get_table_names` function with our custom queries.
     """
     engine_wrapper = SnowflakeEngineWrapper(
         service_connection=service_connection, engine=engine
@@ -158,7 +170,9 @@ def test_connection(
         "GetSchemas": partial(
             execute_inspector_func, engine_wrapper, "get_schema_names"
         ),
-        "GetTables": partial(execute_inspector_func, engine_wrapper, "get_table_names"),
+        "GetTables": partial(
+            test_query, statement=SNOWFLAKE_TEST_GET_TABLES, engine=engine
+        ),
         "GetViews": partial(execute_inspector_func, engine_wrapper, "get_view_names"),
         "GetQueries": partial(
             test_query, statement=SNOWFLAKE_TEST_GET_QUERIES, engine=engine
diff --git a/ingestion/src/metadata/ingestion/source/database/snowflake/queries.py b/ingestion/src/metadata/ingestion/source/database/snowflake/queries.py
index 41cc3ec50af..2e995e4ab3e 100644
--- a/ingestion/src/metadata/ingestion/source/database/snowflake/queries.py
+++ b/ingestion/src/metadata/ingestion/source/database/snowflake/queries.py
@@ -117,6 +117,10 @@ SNOWFLAKE_TEST_GET_QUERIES = """
 SELECT query_text from snowflake.account_usage.query_history limit 1
 """
 
+SNOWFLAKE_TEST_GET_TABLES = """
+SELECT TABLE_NAME FROM information_schema.tables LIMIT 1 
+"""
+
 SNOWFLAKE_GET_DATABASES = "SHOW DATABASES"