diff --git a/infra/common/src/main/java/org/apache/shardingsphere/infra/metadata/database/rule/RuleMetaData.java b/infra/common/src/main/java/org/apache/shardingsphere/infra/metadata/database/rule/RuleMetaData.java
index 08966ba1036a2..97a3254e7d4b6 100644
--- a/infra/common/src/main/java/org/apache/shardingsphere/infra/metadata/database/rule/RuleMetaData.java
+++ b/infra/common/src/main/java/org/apache/shardingsphere/infra/metadata/database/rule/RuleMetaData.java
@@ -104,11 +104,12 @@ public <T extends ShardingSphereRule> T getSingleRule(final Class<T> clazz) {
      */
     public Map<String, Collection<Class<? extends ShardingSphereRule>>> getInUsedStorageUnitNameAndRulesMap() {
         Map<String, Collection<Class<? extends ShardingSphereRule>>> result = new LinkedHashMap<>();
-        for (DataSourceContainedRule each : findRules(DataSourceContainedRule.class)) {
-            result.putAll(getInUsedStorageUnitNameAndRulesMap(each, getInUsedStorageUnitNames(each)));
-        }
-        for (DataNodeContainedRule each : findRules(DataNodeContainedRule.class)) {
-            result.putAll(getInUsedStorageUnitNameAndRulesMap(each, getInUsedStorageUnitNames(each)));
+        for (ShardingSphereRule each : rules) {
+            if (each instanceof DataSourceContainedRule) {
+                result.putAll(getInUsedStorageUnitNameAndRulesMap(each, getInUsedStorageUnitNames((DataSourceContainedRule) each)));
+            } else if (each instanceof DataNodeContainedRule) {
+                result.putAll(getInUsedStorageUnitNameAndRulesMap(each, getInUsedStorageUnitNames((DataNodeContainedRule) each)));
+            }
         }
         return result;
     }
diff --git a/proxy/backend/core/src/main/java/org/apache/shardingsphere/proxy/backend/handler/distsql/rql/storage/unit/ShowStorageUnitExecutor.java b/proxy/backend/core/src/main/java/org/apache/shardingsphere/proxy/backend/handler/distsql/rql/storage/unit/ShowStorageUnitExecutor.java
index 2952998e9585d..25604d8d3db42 100644
--- a/proxy/backend/core/src/main/java/org/apache/shardingsphere/proxy/backend/handler/distsql/rql/storage/unit/ShowStorageUnitExecutor.java
+++ b/proxy/backend/core/src/main/java/org/apache/shardingsphere/proxy/backend/handler/distsql/rql/storage/unit/ShowStorageUnitExecutor.java
@@ -98,16 +98,14 @@ private Map<String, DataSourcePoolProperties> getDataSourcePoolPropertiesMap(fin
         if (usageCount.isPresent()) {
             Map<String, Collection<Class<? extends ShardingSphereRule>>> inUsedStorageUnits = database.getRuleMetaData().getInUsedStorageUnitNameAndRulesMap();
             for (Entry<String, StorageUnit> entry : database.getResourceMetaData().getStorageUnits().entrySet()) {
-                Integer currentUsageCount = inUsedStorageUnits.containsKey(entry.getKey()) ? inUsedStorageUnits.get(entry.getKey()).size() : 0;
+                int currentUsageCount = inUsedStorageUnits.containsKey(entry.getKey()) ? inUsedStorageUnits.get(entry.getKey()).size() : 0;
                 if (usageCount.get().equals(currentUsageCount)) {
-                    result.put(entry.getKey(), getDataSourcePoolProperties(
-                            propsMap, entry.getKey(), storageUnits.get(entry.getKey()).getStorageType(), entry.getValue().getDataSource()));
+                    result.put(entry.getKey(), getDataSourcePoolProperties(propsMap, entry.getKey(), storageUnits.get(entry.getKey()).getStorageType(), entry.getValue().getDataSource()));
                 }
             }
         } else {
             for (Entry<String, StorageUnit> entry : storageUnits.entrySet()) {
-                result.put(entry.getKey(),
-                        getDataSourcePoolProperties(propsMap, entry.getKey(), storageUnits.get(entry.getKey()).getStorageType(), entry.getValue().getDataSource()));
+                result.put(entry.getKey(), getDataSourcePoolProperties(propsMap, entry.getKey(), storageUnits.get(entry.getKey()).getStorageType(), entry.getValue().getDataSource()));
             }
         }
         return result;