Question

我正在使用Neo4j的java程序，Neo4j版本为2.3.0m1。我用于连接的jar文件是neo4j-desktop-2.3.0-M01.jar。一切正常。现在我想加载2.3.0-m3版本的数据库，该版本在当前版本中没有打开。我无法为这个新版本找到任何jar文件。

这是我的java代码

import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.graphdb.Node;
import org.neo4j.graphdb.Relationship;
import org.neo4j.graphdb.Transaction;
import org.neo4j.graphdb.factory.GraphDatabaseFactory;


public class Testing {
public static void main(String args[])
{
    System.out.println("hai");

    GraphDatabaseFactory dbFactory = new GraphDatabaseFactory();
    GraphDatabaseService db= dbFactory.newEmbeddedDatabase("D:\\graph.db");

    try (Transaction tx = db.beginTx()) {
        System.out.println("began transaction");

        tx.success();
    }
    catch(Exception e)
    {
        e.printStackTrace();
    }
       System.out.println("Done successfully");

}
}

如果我尝试打开更高版本的db（从2.3.0-M3），这是我得到的错误

Exception in thread "main" java.lang.RuntimeException: Error starting org.neo4j.kernel.EmbeddedGraphDatabase, D:\data2\graph.db
at org.neo4j.kernel.InternalAbstractGraphDatabase.run(InternalAbstractGraphDatabase.java:314)
at org.neo4j.kernel.EmbeddedGraphDatabase.<init>(EmbeddedGraphDatabase.java:59)
at org.neo4j.graphdb.factory.GraphDatabaseFactory.newDatabase(GraphDatabaseFactory.java:107)
at org.neo4j.graphdb.factory.GraphDatabaseFactory$1.newDatabase(GraphDatabaseFactory.java:94)
at org.neo4j.graphdb.factory.GraphDatabaseBuilder.newGraphDatabase(GraphDatabaseBuilder.java:176)
at org.neo4j.graphdb.factory.GraphDatabaseFactory.newEmbeddedDatabase(GraphDatabaseFactory.java:66)
at Testing.main(Testing.java:19)
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.kernel.impl.transaction.state.DataSourceManager@258bb6ba' was successfully initialized, but failed to start. Please see attached cause exception.
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:499)
at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:108)
at org.neo4j.kernel.InternalAbstractGraphDatabase.run(InternalAbstractGraphDatabase.java:309)
... 6 more
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.kernel.NeoStoreDataSource@f1cb476' was successfully initialized, but failed to start. Please see attached cause exception.
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:499)
at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:108)
at org.neo4j.kernel.impl.transaction.state.DataSourceManager.start(DataSourceManager.java:117)
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:493)
... 8 more
Caused by: org.neo4j.kernel.impl.storemigration.StoreUpgrader$UpgradingStoreVersionNotFoundException: 'neostore.nodestore.db' does not contain a store version, please ensure that the original database was shut down in a clean state.
at org.neo4j.kernel.impl.storemigration.UpgradableDatabase.checkUpgradeable(UpgradableDatabase.java:86)
at org.neo4j.kernel.impl.storemigration.StoreMigrator.needsMigration(StoreMigrator.java:158)
at org.neo4j.kernel.impl.storemigration.StoreUpgrader.getParticipantsEagerToMigrate(StoreUpgrader.java:259)
at org.neo4j.kernel.impl.storemigration.StoreUpgrader.migrateIfNeeded(StoreUpgrader.java:134)
at org.neo4j.kernel.NeoStoreDataSource.upgradeStore(NeoStoreDataSource.java:532)
at org.neo4j.kernel.NeoStoreDataSource.start(NeoStoreDataSource.java:434)
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:493)
... 11 more

此外，我正在尝试从neo4j网站下载Windows的企业版zip（2.3.0-M1），因为我有2.3.0-M3中的import-graphml功能，我想将其移至2.3。 0-M3。但neo4j网站提供的链接并未完全下载。 http://neo4j.com/artifact.php?name=neo4j-enterprise-2.3.0-M01-windows.zip 还有其他地方可以从

下载

Answer 1

如果您正在升级Neo4j，您还需要升级数据库版本。

<强> neo4j.properties

# Enable this to be able to upgrade a store from an older version.
allow_store_upgrade=true

Neo4j在切换版本时显示错误

1 个答案: