diff --git a/oap-server/server-storage-plugin/storage-elasticsearch-plugin/src/main/java/org/apache/skywalking/oap/server/storage/plugin/elasticsearch/cache/NetworkAddressInventoryCacheEsDAO.java b/oap-server/server-storage-plugin/storage-elasticsearch-plugin/src/main/java/org/apache/skywalking/oap/server/storage/plugin/elasticsearch/cache/NetworkAddressInventoryCacheEsDAO.java
index b53d024cf..58154d095 100644
--- a/oap-server/server-storage-plugin/storage-elasticsearch-plugin/src/main/java/org/apache/skywalking/oap/server/storage/plugin/elasticsearch/cache/NetworkAddressInventoryCacheEsDAO.java
+++ b/oap-server/server-storage-plugin/storage-elasticsearch-plugin/src/main/java/org/apache/skywalking/oap/server/storage/plugin/elasticsearch/cache/NetworkAddressInventoryCacheEsDAO.java
@@ -84,7 +84,7 @@ public class NetworkAddressInventoryCacheEsDAO extends EsDAO implements INetwork
         try {
             SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
             searchSourceBuilder.query(QueryBuilders.rangeQuery(NetworkAddressInventory.LAST_UPDATE_TIME).gte(lastUpdateTime));
-            searchSourceBuilder.size(500);
+            searchSourceBuilder.size(Integer.MAX_VALUE);
 
             SearchResponse response = getClient().search(NetworkAddressInventory.INDEX_NAME, searchSourceBuilder);
 
diff --git a/oap-server/server-storage-plugin/storage-elasticsearch-plugin/src/main/java/org/apache/skywalking/oap/server/storage/plugin/elasticsearch/cache/ServiceInventoryCacheEsDAO.java b/oap-server/server-storage-plugin/storage-elasticsearch-plugin/src/main/java/org/apache/skywalking/oap/server/storage/plugin/elasticsearch/cache/ServiceInventoryCacheEsDAO.java
index 395a98bae..f20d9d1d8 100644
--- a/oap-server/server-storage-plugin/storage-elasticsearch-plugin/src/main/java/org/apache/skywalking/oap/server/storage/plugin/elasticsearch/cache/ServiceInventoryCacheEsDAO.java
+++ b/oap-server/server-storage-plugin/storage-elasticsearch-plugin/src/main/java/org/apache/skywalking/oap/server/storage/plugin/elasticsearch/cache/ServiceInventoryCacheEsDAO.java
@@ -99,7 +99,7 @@ public class ServiceInventoryCacheEsDAO extends EsDAO implements IServiceInvento
             boolQuery.must().add(QueryBuilders.rangeQuery(ServiceInventory.LAST_UPDATE_TIME).gte(lastUpdateTime));
 
             searchSourceBuilder.query(boolQuery);
-            searchSourceBuilder.size(500);
+            searchSourceBuilder.size(Integer.MAX_VALUE);
 
             SearchResponse response = getClient().search(ServiceInventory.INDEX_NAME, searchSourceBuilder);