diff --git a/backend/domain/agent/singleagent/internal/agentflow/node_tool_database.go b/backend/domain/agent/singleagent/internal/agentflow/node_tool_database.go
index 75aefb1b..3af89bfa 100644
--- a/backend/domain/agent/singleagent/internal/agentflow/node_tool_database.go
+++ b/backend/domain/agent/singleagent/internal/agentflow/node_tool_database.go
@@ -112,22 +112,21 @@ func newDatabaseTools(ctx context.Context, conf *databaseConfig) ([]tool.Invokab
 
 	dbInfos := conf.databaseConf
 
-	d := &databaseTool{
-		spaceID:       conf.spaceID,
-		connectorUID:  conf.userID,
-		agentIdentity: conf.agentIdentity,
-	}
-
 	tools := make([]tool.InvokableTool, 0, len(dbInfos))
 	for _, dbInfo := range dbInfos {
 		tID, err := strconv.ParseInt(dbInfo.GetTableId(), 10, 64)
 		if err != nil {
 			return nil, err
 		}
+		d := &databaseTool{
+			spaceID:        conf.spaceID,
+			connectorUID:   conf.userID,
+			agentIdentity:  conf.agentIdentity,
+			promptDisabled: dbInfo.GetPromptDisabled(),
+			name:           dbInfo.GetTableName(),
+			databaseID:     tID,
+		}
 
-		d.databaseID = tID
-		d.promptDisabled = dbInfo.GetPromptDisabled()
-		d.name = dbInfo.GetTableName()
 		dbTool, err := utils.InferTool(dbInfo.GetTableName(), buildDatabaseToolDescription(dbInfo), d.Invoke)
 		if err != nil {
 			return nil, err