diff --git a/common/Tnb.Common.Core/Manager/DataBase/DataBaseManager.cs b/common/Tnb.Common.Core/Manager/DataBase/DataBaseManager.cs
index 832964b8..40684167 100644
--- a/common/Tnb.Common.Core/Manager/DataBase/DataBaseManager.cs
+++ b/common/Tnb.Common.Core/Manager/DataBase/DataBaseManager.cs
@@ -26,7 +26,6 @@ namespace JNPF.Common.Core.Manager;
 /// </summary>
 public class DataBaseManager : IDataBaseManager, ITransient
 {
-    const int PGNAMESPACE = 2200;
     /// <summary>
     /// 初始化客户端.
     /// </summary>