diff --git a/mode/core/src/main/java/org/apache/shardingsphere/mode/metadata/manager/StorageUnitManager.java b/mode/core/src/main/java/org/apache/shardingsphere/mode/metadata/manager/StorageUnitManager.java
index 1caf0699e071d..c65ea02dbc2c6 100644
--- a/mode/core/src/main/java/org/apache/shardingsphere/mode/metadata/manager/StorageUnitManager.java
+++ b/mode/core/src/main/java/org/apache/shardingsphere/mode/metadata/manager/StorageUnitManager.java
@@ -19,37 +19,21 @@
 
 import lombok.SneakyThrows;
 import lombok.extern.slf4j.Slf4j;
-import org.apache.shardingsphere.infra.config.database.DatabaseConfiguration;
-import org.apache.shardingsphere.infra.config.database.impl.DataSourceProvidedDatabaseConfiguration;
-import org.apache.shardingsphere.infra.config.props.ConfigurationProperties;
-import org.apache.shardingsphere.infra.config.rule.RuleConfiguration;
 import org.apache.shardingsphere.infra.datasource.pool.props.domain.DataSourcePoolProperties;
 import org.apache.shardingsphere.infra.instance.ComputeNodeInstanceContext;
-import org.apache.shardingsphere.infra.metadata.ShardingSphereMetaData;
 import org.apache.shardingsphere.infra.metadata.database.ShardingSphereDatabase;
-import org.apache.shardingsphere.infra.metadata.database.resource.ResourceMetaData;
-import org.apache.shardingsphere.infra.metadata.database.resource.node.StorageNode;
-import org.apache.shardingsphere.infra.metadata.database.resource.unit.StorageUnit;
-import org.apache.shardingsphere.infra.metadata.database.rule.RuleMetaData;
 import org.apache.shardingsphere.infra.metadata.database.schema.model.ShardingSphereSchema;
 import org.apache.shardingsphere.infra.rule.ShardingSphereRule;
-import org.apache.shardingsphere.infra.rule.builder.global.GlobalRulesBuilder;
-import org.apache.shardingsphere.metadata.factory.ExternalMetaDataFactory;
-import org.apache.shardingsphere.metadata.factory.InternalMetaDataFactory;
 import org.apache.shardingsphere.metadata.persist.MetaDataPersistService;
 import org.apache.shardingsphere.mode.metadata.MetaDataContexts;
 import org.apache.shardingsphere.mode.metadata.MetaDataContextsFactory;
 import org.apache.shardingsphere.mode.spi.PersistRepository;
 
-import javax.sql.DataSource;
 import java.sql.SQLException;
-import java.util.Collection;
 import java.util.Collections;
 import java.util.LinkedHashMap;
 import java.util.Map;
-import java.util.Map.Entry;
 import java.util.concurrent.atomic.AtomicReference;
-import java.util.stream.Collectors;
 
 /**
  * Storage unit manager.
@@ -123,85 +107,13 @@ public synchronized void unregisterStorageUnit(final String databaseName, final
     }
     
     private void buildNewMetaDataContext(final String databaseName, final SwitchingResource switchingResource) throws SQLException {
-        MetaDataContexts reloadMetaDataContexts = createMetaDataContexts(databaseName, true, switchingResource, null);
+        MetaDataContexts reloadMetaDataContexts = MetaDataContextsFactory.createBySwitchResource(databaseName, true,
+                switchingResource, metaDataContexts.get(), metaDataPersistService, computeNodeInstanceContext);
         metaDataContexts.set(reloadMetaDataContexts);
         metaDataContexts.get().getMetaData().getDatabases().putAll(buildShardingSphereDatabase(reloadMetaDataContexts.getMetaData().getDatabase(databaseName)));
         switchingResource.closeStaleDataSources();
     }
     
-    private MetaDataContexts createMetaDataContexts(final String databaseName, final boolean internalLoadMetaData,
-                                                    final SwitchingResource switchingResource, final Collection<RuleConfiguration> ruleConfigs) throws SQLException {
-        Map<String, ShardingSphereDatabase> changedDatabases = createChangedDatabases(databaseName, internalLoadMetaData, switchingResource, ruleConfigs);
-        ConfigurationProperties props = metaDataContexts.get().getMetaData().getProps();
-        RuleMetaData changedGlobalMetaData = new RuleMetaData(
-                GlobalRulesBuilder.buildRules(metaDataContexts.get().getMetaData().getGlobalRuleMetaData().getConfigurations(), changedDatabases, props));
-        return newMetaDataContexts(new ShardingSphereMetaData(changedDatabases, metaDataContexts.get().getMetaData().getGlobalResourceMetaData(), changedGlobalMetaData, props));
-    }
-    
-    private synchronized Map<String, ShardingSphereDatabase> createChangedDatabases(final String databaseName, final boolean internalLoadMetaData,
-                                                                                    final SwitchingResource switchingResource, final Collection<RuleConfiguration> ruleConfigs) throws SQLException {
-        ResourceMetaData effectiveResourceMetaData = getEffectiveResourceMetaData(metaDataContexts.get().getMetaData().getDatabase(databaseName), switchingResource);
-        Collection<RuleConfiguration> toBeCreatedRuleConfigs = null == ruleConfigs
-                ? metaDataContexts.get().getMetaData().getDatabase(databaseName).getRuleMetaData().getConfigurations()
-                : ruleConfigs;
-        DatabaseConfiguration toBeCreatedDatabaseConfig = getDatabaseConfiguration(effectiveResourceMetaData, switchingResource, toBeCreatedRuleConfigs);
-        ShardingSphereDatabase changedDatabase = createChangedDatabase(metaDataContexts.get().getMetaData().getDatabase(databaseName).getName(), internalLoadMetaData,
-                metaDataPersistService, toBeCreatedDatabaseConfig, metaDataContexts.get().getMetaData().getProps(), computeNodeInstanceContext);
-        Map<String, ShardingSphereDatabase> result = new LinkedHashMap<>(metaDataContexts.get().getMetaData().getDatabases());
-        result.put(databaseName.toLowerCase(), changedDatabase);
-        return result;
-    }
-    
-    private ResourceMetaData getEffectiveResourceMetaData(final ShardingSphereDatabase database, final SwitchingResource resource) {
-        Map<StorageNode, DataSource> storageNodes = getStorageNodes(database.getResourceMetaData().getDataSources(), resource);
-        Map<String, StorageUnit> storageUnits = getStorageUnits(database.getResourceMetaData().getStorageUnits(), resource);
-        return new ResourceMetaData(storageNodes, storageUnits);
-    }
-    
-    private Map<StorageNode, DataSource> getStorageNodes(final Map<StorageNode, DataSource> currentStorageNodes, final SwitchingResource resource) {
-        Map<StorageNode, DataSource> result = new LinkedHashMap<>(currentStorageNodes.size(), 1F);
-        for (Entry<StorageNode, DataSource> entry : currentStorageNodes.entrySet()) {
-            if (null == resource || !resource.getStaleDataSources().containsKey(entry.getKey())) {
-                result.put(entry.getKey(), entry.getValue());
-            }
-        }
-        return result;
-    }
-    
-    private Map<String, StorageUnit> getStorageUnits(final Map<String, StorageUnit> currentStorageUnits, final SwitchingResource resource) {
-        Map<String, StorageUnit> result = new LinkedHashMap<>(currentStorageUnits.size(), 1F);
-        for (Entry<String, StorageUnit> entry : currentStorageUnits.entrySet()) {
-            if (null == resource || !resource.getStaleStorageUnitNames().contains(entry.getKey())) {
-                result.put(entry.getKey(), entry.getValue());
-            }
-        }
-        return result;
-    }
-    
-    private DatabaseConfiguration getDatabaseConfiguration(final ResourceMetaData resourceMetaData, final SwitchingResource switchingResource,
-                                                           final Collection<RuleConfiguration> toBeCreatedRuleConfigs) {
-        Map<String, DataSourcePoolProperties> propsMap = null == switchingResource ? resourceMetaData.getStorageUnits().entrySet().stream()
-                .collect(Collectors.toMap(Entry::getKey, entry -> entry.getValue().getDataSourcePoolProperties(), (oldValue, currentValue) -> oldValue, LinkedHashMap::new))
-                : switchingResource.getMergedDataSourcePoolPropertiesMap();
-        return new DataSourceProvidedDatabaseConfiguration(getMergedStorageNodeDataSources(resourceMetaData, switchingResource), toBeCreatedRuleConfigs, propsMap);
-    }
-    
-    private Map<StorageNode, DataSource> getMergedStorageNodeDataSources(final ResourceMetaData currentResourceMetaData, final SwitchingResource switchingResource) {
-        Map<StorageNode, DataSource> result = currentResourceMetaData.getDataSources();
-        if (null != switchingResource && !switchingResource.getNewDataSources().isEmpty()) {
-            result.putAll(switchingResource.getNewDataSources());
-        }
-        return result;
-    }
-    
-    private ShardingSphereDatabase createChangedDatabase(final String databaseName, final boolean internalLoadMetaData, final MetaDataPersistService persistService,
-                                                         final DatabaseConfiguration databaseConfig, final ConfigurationProperties props,
-                                                         final ComputeNodeInstanceContext computeNodeInstanceContext) throws SQLException {
-        return internalLoadMetaData
-                ? InternalMetaDataFactory.create(databaseName, persistService, databaseConfig, props, computeNodeInstanceContext)
-                : ExternalMetaDataFactory.create(databaseName, databaseConfig, props, computeNodeInstanceContext);
-    }
-    
     private Map<String, ShardingSphereDatabase> buildShardingSphereDatabase(final ShardingSphereDatabase originalDatabase) {
         return Collections.singletonMap(originalDatabase.getName().toLowerCase(), new ShardingSphereDatabase(originalDatabase.getName(),
                 originalDatabase.getProtocolType(), originalDatabase.getResourceMetaData(), originalDatabase.getRuleMetaData(), buildSchemas(originalDatabase)));
@@ -223,8 +135,4 @@ private void closeStaleRules(final String databaseName) {
             }
         }
     }
-    
-    private MetaDataContexts newMetaDataContexts(final ShardingSphereMetaData metaData) {
-        return MetaDataContextsFactory.create(metaDataPersistService, metaData);
-    }
 }