diff --git a/services/training/app/ml/prophet_manager.py b/services/training/app/ml/prophet_manager.py
index 923e6da1..ebab84e7 100644
--- a/services/training/app/ml/prophet_manager.py
+++ b/services/training/app/ml/prophet_manager.py
@@ -801,12 +801,18 @@ class BakeryProphetManager:
                 db_model.data_quality_score = float(training_metrics.get('data_quality_score')) if training_metrics.get('data_quality_score') is not None else None
 
             db_session.add(db_model)
-            await db_session.commit()
-
-            logger.info(f"Model {model_id} stored in database successfully")
+            
+            # Only commit if using a new session, not if using parent session
+            # Parent session commits will be handled by the calling method to prevent conflicts
+            if not use_parent_session:
+                await db_session.commit()
+                logger.info(f"Model {model_id} stored in database successfully")
+            else:
+                logger.debug(f"Added model {model_id} to parent session (commit deferred)")
 
         try:
             # ✅ FIX: Use parent session if provided, otherwise create new one
+            # The parent session handles commits, so child sessions shouldn't commit
             if use_parent_session:
                 logger.debug(f"Using parent session for storing model {model_id}")
                 await _store_in_db(session)
@@ -814,6 +820,9 @@ class BakeryProphetManager:
                 logger.debug(f"Creating new session for storing model {model_id}")
                 async with self.database_manager.get_session() as new_session:
                     await _store_in_db(new_session)
+                    # Commit only when using our own session (not parent)
+                    await new_session.commit()  # This is safe since new_session is dedicated
+                    logger.info(f"Model {model_id} stored in database successfully")
 
         except Exception as e:
             logger.error(f"Failed to store model in database: {str(e)}")