diff --git a/src/modules/constants/constant.ts b/src/modules/constants/constant.ts
index faac8aa..df50774 100644
--- a/src/modules/constants/constant.ts
+++ b/src/modules/constants/constant.ts
@@ -704,3 +704,5 @@ export const JNDI_FACTORYS = [
         url: 'http://localhost:8080/hello/burlap',
     },
 ];
+
+export const PAGE_SIZE = 50;
diff --git a/src/modules/pages/connection_pool/connection_pool.ts b/src/modules/pages/connection_pool/connection_pool.ts
index 052f46d..258e61a 100644
--- a/src/modules/pages/connection_pool/connection_pool.ts
+++ b/src/modules/pages/connection_pool/connection_pool.ts
@@ -3,6 +3,7 @@ import { Htape, Vtape, Label, Layout, CenterAdapt, Loader } from 'ui';
 import { ConnectionPoolModel, ConnectionPoolModelXtype } from './connection_pool.model';
 import { ListItemXtype } from './list_item/list_item';
 import { PoolXtype } from './pool/pool';
+import { PAGE_SIZE } from '@constants/constant';
 export const ConnectionPoolXtype = 'dec.dcm.connection_pool';
 @shortcut(ConnectionPoolXtype)
 @store(ConnectionPoolModelXtype)
@@ -49,9 +50,9 @@ export class ConnectionPool extends BI.Widget {
                             {
                                 type: Loader,
                                 itemsCreator: (options: {times: number}, populate) => {
-                                    populate(this.renderList((options.times - 1) * 50, options.times * 50));
+                                    populate(this.renderList((options.times - 1) * PAGE_SIZE, options.times * PAGE_SIZE));
                                 },
-                                hasNext: options => options.times * 50 < BI.size(this.model.connectionJDBC),
+                                hasNext: options => options.times * PAGE_SIZE < BI.size(this.model.connectionJDBC),
                             },
                         ],
                     },