diff --git a/ingestion/src/metadata/ingestion/source/database/bigquery/metadata.py b/ingestion/src/metadata/ingestion/source/database/bigquery/metadata.py
index 0923fbd4cff4..f4bd779a4813 100644
--- a/ingestion/src/metadata/ingestion/source/database/bigquery/metadata.py
+++ b/ingestion/src/metadata/ingestion/source/database/bigquery/metadata.py
@@ -67,6 +67,7 @@
 from metadata.ingestion.api.delete import delete_entity_by_name
 from metadata.ingestion.api.models import Either
 from metadata.ingestion.api.steps import InvalidSourceException
+from metadata.ingestion.models.life_cycle import OMetaLifeCycleData
 from metadata.ingestion.models.ometa_classification import OMetaTagAndClassification
 from metadata.ingestion.ometa.ometa_api import OpenMetadata
 from metadata.ingestion.source.connections import get_test_connection_fn
@@ -448,6 +449,44 @@ def get_dataset_obj(self, schema_name: str):
             )
         return self._current_dataset_obj
 
+    def yield_life_cycle_data(self, _) -> Iterable[Either[OMetaLifeCycleData]]:
+        """
+        Override to skip lifecycle data for schemas whose dataset location does not
+        match the configured usageLocation.
+
+        BigQuery routes INFORMATION_SCHEMA queries to the location specified in the
+        connection (usageLocation). When a dataset lives in a different GCP region,
+        the query returns a 404. Skipping early avoids one failed API call per table
+        in the affected schema.
+        """
+        usage_location = getattr(self.service_connection, "usageLocation", None)
+        if usage_location:
+            schema_name = self.context.get().database_schema
+            try:
+                dataset_obj = self.get_dataset_obj(schema_name)
+                dataset_location = getattr(dataset_obj, "location", None)
+                if (
+                    dataset_location
+                    and dataset_location.upper() != usage_location.upper()
+                ):
+                    logger.debug(
+                        "Skipping lifecycle data for schema '%s': dataset location '%s' "
+                        "differs from configured usageLocation '%s'. "
+                        "BigQuery INFORMATION_SCHEMA queries are location-specific.",
+                        schema_name,
+                        dataset_location,
+                        usage_location,
+                    )
+                    return
+            except Exception as exc:
+                logger.debug(
+                    "Could not verify dataset location for schema '%s', "
+                    "proceeding with lifecycle query: %s",
+                    schema_name,
+                    exc,
+                )
+        yield from super().yield_life_cycle_data(_)
+
     def _prefetch_policy_tags(self):
         """Pre-fetch all policy tags at schema level to avoid per-column API calls"""
         if not self.service_connection.includePolicyTags:
diff --git a/ingestion/src/metadata/ingestion/source/database/oracle/utils.py b/ingestion/src/metadata/ingestion/source/database/oracle/utils.py
index b3f8880fc7c7..8ae85e214772 100644
--- a/ingestion/src/metadata/ingestion/source/database/oracle/utils.py
+++ b/ingestion/src/metadata/ingestion/source/database/oracle/utils.py
@@ -155,18 +155,40 @@ def get_columns(self, connection, table_name, schema=None, **kw):
         dblink
 
     """
-    resolve_synonyms = kw.get("oracle_resolve_synonyms", False)
     dblink = kw.get("dblink", "")
+    resolve_synonyms = kw.get("oracle_resolve_synonyms", False)
     info_cache = kw.get("info_cache")
 
-    (table_name, schema, dblink, _) = self._prepare_reflection_args(
-        connection,
-        table_name,
-        schema,
-        resolve_synonyms,
-        dblink,
-        info_cache=info_cache,
-    )
+    if resolve_synonyms:
+        try:
+            rows = list(
+                self._get_synonyms(
+                    connection, schema, [table_name], dblink, info_cache=info_cache
+                )
+            )
+        except Exception:
+            rows = []
+
+        if rows:
+            row = rows[0]
+            actual_name = getattr(row, "table_name", None)
+            actual_owner = getattr(row, "table_owner", None)
+            db_link_val = getattr(row, "db_link", None)
+
+            if actual_name:
+                table_name = self.denormalize_name(actual_name)
+            if actual_owner:
+                schema = self.denormalize_name(actual_owner)
+            if db_link_val:
+                if not db_link_val.startswith("@"):
+                    dblink = "@" + db_link_val
+                else:
+                    dblink = db_link_val
+    else:
+        table_name = self.denormalize_name(table_name)
+        if schema is not None:
+            schema = self.denormalize_name(schema)
+
     columns = []
 
     char_length_col = "data_length"
@@ -395,22 +417,51 @@ def get_indexes_preserve_case(
     **kw,
 ):
     """Override get_indexes to fix two issues when preserveIdentifierCase=True:
-    1. Use original table_name (before _prepare_reflection_args uppercases it)
+    1. Use original table_name (before denormalize_name uppercases it)
        so quoted lowercase identifiers are found in ALL_IND_COLUMNS.
     2. Access result row columns case-insensitively — Oracle thick mode returns
        INDEX_NAME (uppercase) while thin mode returns index_name (lowercase).
        A lowercased dict handles both without branching.
     """
     original_table_name = table_name
-    info_cache = kw.get("info_cache")
-    (table_name, schema, dblink, _) = self._prepare_reflection_args(
-        connection,
-        table_name,
-        schema,
-        resolve_synonyms,
-        dblink,
-        info_cache=info_cache,
-    )
+    resolve_synonyms = kw.get("oracle_resolve_synonyms", False)
+
+    # SQLAlchemy 2.0 removed _prepare_reflection_args; denormalize schema/table
+    # for the pk_constraint lookup while the index query itself uses
+    # original_table_name (preserve-case mode keeps identifiers as-is).
+    table_name = self.denormalize_name(table_name)
+    if schema is not None:
+        schema = self.denormalize_name(schema)
+    if dblink and not dblink.startswith("@"):
+        dblink = "@" + dblink
+
+    if resolve_synonyms:
+        try:
+            rows = list(
+                self._get_synonyms(
+                    connection,
+                    schema,
+                    [table_name],
+                    dblink,
+                    info_cache=kw.get("info_cache"),
+                )
+            )
+        except Exception:
+            rows = []
+        if rows:
+            row = rows[0]
+            actual_name = getattr(row, "table_name", None)
+            actual_owner = getattr(row, "table_owner", None)
+            db_link_val = getattr(row, "db_link", None)
+            if actual_name:
+                table_name = self.denormalize_name(actual_name)
+            if actual_owner:
+                schema = self.denormalize_name(actual_owner)
+            if db_link_val:
+                if not db_link_val.startswith("@"):
+                    dblink = "@" + db_link_val
+                else:
+                    dblink = db_link_val
 
     params = {"table_name": original_table_name}
     text = (
diff --git a/ingestion/src/metadata/profiler/interface/sqlalchemy/athena/profiler_interface.py b/ingestion/src/metadata/profiler/interface/sqlalchemy/athena/profiler_interface.py
index dd56e6b782b6..ed98a6707025 100644
--- a/ingestion/src/metadata/profiler/interface/sqlalchemy/athena/profiler_interface.py
+++ b/ingestion/src/metadata/profiler/interface/sqlalchemy/athena/profiler_interface.py
@@ -91,9 +91,7 @@ def _get_struct_columns(
                     table_service_type=DatabaseServiceType.Athena,
                     _quote=False,
                 )
-                sqa_col._set_parent(  # pylint: disable=protected-access
-                    self.table.__table__
-                )
+                self.table.__table__.append_column(sqa_col, replace_existing=True)
                 columns_list.append(sqa_col)
             else:
                 cols = self._get_struct_columns(
@@ -112,8 +110,6 @@ def get_columns(self) -> List[Column]:
                 )
             else:
                 col = build_orm_col(idx, column_obj, DatabaseServiceType.Athena)
-                col._set_parent(  # pylint: disable=protected-access
-                    self.table.__table__
-                )
+                self.table.__table__.append_column(col, replace_existing=True)
                 columns.append(col)
         return columns
diff --git a/ingestion/src/metadata/profiler/orm/converter/base.py b/ingestion/src/metadata/profiler/orm/converter/base.py
index 40fe402ffbef..e2c8fe34a697 100644
--- a/ingestion/src/metadata/profiler/orm/converter/base.py
+++ b/ingestion/src/metadata/profiler/orm/converter/base.py
@@ -24,6 +24,9 @@
 from metadata.generated.schema.entity.data.table import Column, Table
 from metadata.ingestion.ometa.ometa_api import OpenMetadata
 from metadata.profiler.orm.converter.converter_registry import converter_registry
+from metadata.utils.logger import profiler_logger
+
+logger = profiler_logger()
 
 
 class Base(DeclarativeBase):
@@ -102,7 +105,7 @@ def build_orm_col(
 
 def ometa_to_sqa_orm(
     table: Table, metadata: OpenMetadata, sqa_metadata_obj: Optional[MetaData] = None
-) -> type:
+) -> Optional[type]:
     """
     Given an OpenMetadata instance, prepare
     the SQLAlchemy ORM class
@@ -126,11 +129,11 @@ def ometa_to_sqa_orm(
     # SQA 2.x raises a hard error if no primary key columns are found (was just a warning in 1.x).
     # Since build_orm_col assigns PK to the first column, we need at least one column.
     if not table.columns:
-        raise ValueError(
-            f"Table '{table.name.root}' has no columns. "
-            "Cannot create ORM class without at least one column. "
-            "Ensure the table's column metadata was ingested correctly."
+        logger.warning(
+            "Table '%s' has no columns. Skipping ORM class creation.",
+            table.name.root,
         )
+        return None
 
     orm_database_name = get_orm_database(table, metadata)
     # SQLite does not support schemas
diff --git a/ingestion/src/metadata/profiler/processor/processor.py b/ingestion/src/metadata/profiler/processor/processor.py
index d80ff40083e5..48fa97acee63 100644
--- a/ingestion/src/metadata/profiler/processor/processor.py
+++ b/ingestion/src/metadata/profiler/processor/processor.py
@@ -36,6 +36,9 @@
     Inject,
     inject,
 )
+from metadata.utils.logger import profiler_logger
+
+logger = profiler_logger()
 
 
 class ProfilerProcessor(Processor):
@@ -70,6 +73,12 @@ def name(self) -> str:
         return "Profiler"
 
     def _run(self, record: ProfilerSourceAndEntity) -> Either[ProfilerResponse]:
+        if not record.entity.columns:
+            logger.warning(
+                "Table '%s' has no columns — continuing to run profiler for table-level metrics",
+                record.entity.fullyQualifiedName.root,
+            )
+
         profiler_runner: Profiler = record.profiler_source.get_profiler_runner(
             record.entity, self.profiler_config
         )
diff --git a/ingestion/src/metadata/sampler/processor.py b/ingestion/src/metadata/sampler/processor.py
index 9c44d00cc7d6..787303f8895a 100644
--- a/ingestion/src/metadata/sampler/processor.py
+++ b/ingestion/src/metadata/sampler/processor.py
@@ -47,9 +47,12 @@
     Inject,
     inject,
 )
+from metadata.utils.logger import profiler_logger
 from metadata.utils.profiler_utils import get_context_entities
 from metadata.utils.service_spec.service_spec import import_sampler_class
 
+logger = profiler_logger()
+
 
 class SamplerProcessor(Processor):
     """Use the profiler interface to fetch the sample data"""
@@ -91,6 +94,12 @@ def name(self) -> str:
 
     def _run(self, record: ProfilerSourceAndEntity) -> Either[SamplerResponse]:
         """Fetch the sample data and pass it down the pipeline"""
+        if not record.entity.columns:
+            logger.warning(
+                "Skipping sampler for table '%s': no columns found",
+                record.entity.fullyQualifiedName.root,
+            )
+            return Either()
 
         try:
             entity = cast(Table, record.entity)
diff --git a/ingestion/src/metadata/sampler/sqlalchemy/sampler.py b/ingestion/src/metadata/sampler/sqlalchemy/sampler.py
index 4f9159e44138..20e3825025f0 100644
--- a/ingestion/src/metadata/sampler/sqlalchemy/sampler.py
+++ b/ingestion/src/metadata/sampler/sqlalchemy/sampler.py
@@ -15,7 +15,7 @@
 import hashlib
 from typing import List, Optional, Union, cast
 
-from sqlalchemy import Column, inspect, text
+from sqlalchemy import Column, inspect, select, text
 from sqlalchemy.orm import Query
 from sqlalchemy.orm.util import AliasedClass
 from sqlalchemy.schema import Table
@@ -199,8 +199,7 @@ def get_dataset(self, column=None, **__) -> Union[type, AliasedClass]:
             and self.sample_config.profileSample == 100
         ):
             if self.partition_details:
-                partitioned = self._partitioned_table()
-                return partitioned.cte(f"{self.get_sampler_table_name()}_partitioned")
+                return self._partitioned_table()
 
             return self.raw_dataset
 
@@ -306,9 +305,18 @@ def _rdn_sample_from_user_query(self) -> Query:
                 f"{self.get_sampler_table_name()}_user_sampled"
             )
 
-    def _partitioned_table(self) -> Query:
-        """Return the Query object for partitioned tables"""
-        return self.get_partitioned_query()
+    def _partitioned_table(self):
+        """Return a CTE for partitioned tables.
+
+        Build the CTE using Core select() so it does not require an active Session.
+        """
+        self.partition_details = cast(PartitionProfilerConfig, self.partition_details)
+        partition_filter = build_partition_predicate(
+            self.partition_details,
+            self.raw_dataset.__table__.c,
+        )
+        stmt = select(self.raw_dataset).where(partition_filter)
+        return stmt.cte(f"{self.get_sampler_table_name()}_partitioned")
 
     def get_partitioned_query(self, query=None) -> Query:
         """Return the partitioned query"""
@@ -322,8 +330,8 @@ def get_partitioned_query(self, query=None) -> Query:
         if query is not None:
             return query.filter(partition_filter)
 
-        with self.session_factory() as client:
-            return client.query(self.raw_dataset).filter(partition_filter)
+        # Return a Core select so callers do not require an active Session
+        return select(self.raw_dataset).where(partition_filter)
 
     def get_columns(self):
         """get columns from entity"""
diff --git a/ingestion/src/metadata/utils/sqlalchemy_utils.py b/ingestion/src/metadata/utils/sqlalchemy_utils.py
index e8fdc2a22f57..20adf6a16b6d 100644
--- a/ingestion/src/metadata/utils/sqlalchemy_utils.py
+++ b/ingestion/src/metadata/utils/sqlalchemy_utils.py
@@ -167,6 +167,10 @@ def get_all_table_ddls(
                 connection.rollback()
             except Exception:
                 pass
+        try:
+            connection.rollback()
+        except Exception:
+            pass
 
 
 def get_table_ddl_wrapper(
diff --git a/ingestion/tests/cli_e2e/base/config_builders/builders.py b/ingestion/tests/cli_e2e/base/config_builders/builders.py
index 2b7b5cf03f10..83afa8b2e3cf 100644
--- a/ingestion/tests/cli_e2e/base/config_builders/builders.py
+++ b/ingestion/tests/cli_e2e/base/config_builders/builders.py
@@ -69,7 +69,42 @@ def build(self) -> dict:
             }
             self.config["source"]["sourceConfig"]["config"]["includeViews"] = True
 
+        # By default, use the default profiler metrics. For certain connectors that support system
+        # profile (BigQuery, Databricks, Redshift, Snowflake) include the system metric as well
         self.config["processor"] = {"type": "orm-profiler", "config": {}}
+
+        connector = str(self.config.get("source", {}).get("type", "")).lower()
+        connectors_with_system = {"bigquery", "databricks", "redshift", "snowflake"}
+        if connector in connectors_with_system:
+            # Default metrics used by DefaultProfiler + the system metric
+            default_metric_names = [
+                "rowCount",
+                "columnCount",
+                "columnNames",
+                "median",
+                "firstQuartile",
+                "thirdQuartile",
+                "mean",
+                "valuesCount",
+                "distinctCount",
+                "distinctProportion",
+                "min",
+                "max",
+                "nullCount",
+                "nullProportion",
+                "stddev",
+                "sum",
+                "uniqueCount",
+                "uniqueProportion",
+                "interQuartileRange",
+                "nonParametricSkew",
+                "system",
+            ]
+            self.config["processor"]["config"]["profiler"] = {
+                "name": "default_profiler",
+                "metrics": default_metric_names,
+            }
+
         return self.config
 
 
diff --git a/ingestion/tests/cli_e2e/base/test_cli.py b/ingestion/tests/cli_e2e/base/test_cli.py
index 0e3a2df84783..2a5f5877c8a5 100644
--- a/ingestion/tests/cli_e2e/base/test_cli.py
+++ b/ingestion/tests/cli_e2e/base/test_cli.py
@@ -58,7 +58,9 @@ def run_command(self, command: str = "ingest", test_file_path=None) -> str:
             "-c",
             file_path,
         ]
-        process_status = subprocess.Popen(args, stderr=subprocess.PIPE)
+        env = os.environ.copy()
+        env["PYTHONWARNINGS"] = "ignore::FutureWarning"
+        process_status = subprocess.Popen(args, stderr=subprocess.PIPE, env=env)
         _, stderr = process_status.communicate()
         if process_status.returncode != 0:
             print(stderr.decode("utf-8"))
diff --git a/ingestion/tests/cli_e2e/test_cli_datalake_s3.py b/ingestion/tests/cli_e2e/test_cli_datalake_s3.py
index 2617f4e6e6f2..5fb9ce4b8084 100644
--- a/ingestion/tests/cli_e2e/test_cli_datalake_s3.py
+++ b/ingestion/tests/cli_e2e/test_cli_datalake_s3.py
@@ -59,7 +59,7 @@ def expected_tables() -> int:
 
     @staticmethod
     def expected_profiled_tables() -> int:
-        return 6
+        return 5
 
     def expected_sample_size(self) -> int:
         return 50
diff --git a/ingestion/tests/cli_e2e/test_cli_mssql.py b/ingestion/tests/cli_e2e/test_cli_mssql.py
index 3d9ceeabfa67..1c6aef13049b 100644
--- a/ingestion/tests/cli_e2e/test_cli_mssql.py
+++ b/ingestion/tests/cli_e2e/test_cli_mssql.py
@@ -150,10 +150,6 @@ def get_profiler_time_partition_results() -> dict:
                         "distinctProportion": 1.0,
                         "duplicateCount": None,
                         "firstQuartile": 2.5,
-                        "histogram": {
-                            "boundaries": ["1.000 to 3.773", "3.773 and up"],
-                            "frequencies": [1, 2],
-                        },
                         "interQuartileRange": 2.0,
                         "max": 5.0,
                         "maxLength": None,
diff --git a/ingestion/tests/cli_e2e/test_cli_quicksight.py b/ingestion/tests/cli_e2e/test_cli_quicksight.py
index c8a12fa8154d..2a9470cd9252 100644
--- a/ingestion/tests/cli_e2e/test_cli_quicksight.py
+++ b/ingestion/tests/cli_e2e/test_cli_quicksight.py
@@ -48,7 +48,7 @@ def expected_not_included_entities(self) -> int:
         return 6
 
     def expected_not_included_sink_entities(self) -> int:
-        return 7
+        return 3
 
     def expected_filtered_mix(self) -> int:
         return 2
@@ -75,7 +75,7 @@ def expected_datamodels(self) -> int:
         return 0
 
     def expected_dashboards_and_charts_after_patch(self) -> int:
-        return 7
+        return 3
 
     @pytest.mark.order(11)
     def test_lineage(self) -> None:
diff --git a/ingestion/tests/cli_e2e/test_cli_snowflake.py b/ingestion/tests/cli_e2e/test_cli_snowflake.py
index cfead0856abb..f05eb2c6a0a9 100644
--- a/ingestion/tests/cli_e2e/test_cli_snowflake.py
+++ b/ingestion/tests/cli_e2e/test_cli_snowflake.py
@@ -31,6 +31,8 @@
 from .common_e2e_sqa_mixins import SQACommonMethods
 
 
+# TODO: Paused due to credential issue - re-enable once credentials are restored
+@pytest.mark.skip(reason="TODO: Paused due to credential issue")
 class SnowflakeCliTest(CliCommonDB.TestSuite, SQACommonMethods):
     """
     Snowflake CLI Tests