diff --git a/apps/terminal/utils/db_port_mapper.py b/apps/terminal/utils/db_port_mapper.py
index 9a47150f7..973e25c2a 100644
--- a/apps/terminal/utils/db_port_mapper.py
+++ b/apps/terminal/utils/db_port_mapper.py
@@ -51,22 +51,23 @@ class DBPortManager(object):
 
     def pop(self, db: Application):
         mapper = self.get_mapper()
-        to_delete_port = self.get_port_by_db(db)
+        to_delete_port = self.get_port_by_db(db, raise_exception=False)
         mapper.pop(to_delete_port, None)
         self.set_mapper(mapper)
 
-    def get_port_by_db(self, db):
+    def get_port_by_db(self, db, raise_exception=True):
         mapper = self.get_mapper()
         for port, db_id in mapper.items():
             if db_id == str(db.id):
                 return port
-        error = _(
-            'No available port is matched. '
-            'The number of databases may have exceeded the number of ports '
-            'open to the database agent service, '
-            'Contact the administrator to open more ports.'
-        )
-        raise JMSException(error)
+        if raise_exception:
+            error = _(
+                'No available port is matched. '
+                'The number of databases may have exceeded the number of ports '
+                'open to the database agent service, '
+                'Contact the administrator to open more ports.'
+            )
+            raise JMSException(error)
 
     def get_db_by_port(self, port):
         try: