java - Neo4j 服务器启动异常

Question

当我使用 maven 示例运行示例 java 时，我无法启动 neo4j 服务器..iam 使用 java 1.7 和 neo4j 2.0.0，我遇到了这个问题。这是日志文件

Oct 09, 2013 8:49:14 AM org.neo4j.server.logging.Logger log
INFO: Setting startup timeout to: 120000ms based on -1
Oct 09, 2013 8:49:15 AM org.neo4j.server.logging.Logger log
SEVERE: 
org.neo4j.server.ServerStartupException: Starting Neo4j Server failed: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.kernel.impl.transaction.XaDataSourceManager@ce8273' was successfully initialized, but failed to start. Please see attached cause exception.
    at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:211)
    at org.neo4j.server.Bootstrapper.start(Bootstrapper.java:86)
    at org.neo4j.server.Bootstrapper.main(Bootstrapper.java:49)
Caused by: java.lang.RuntimeException: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.kernel.impl.transaction.XaDataSourceManager@ce8273' was successfully initialized, but failed to start. Please see attached cause exception.
    at org.neo4j.kernel.InternalAbstractGraphDatabase.run(InternalAbstractGraphDatabase.java:280)
    at org.neo4j.kernel.EmbeddedGraphDatabase.<init>(EmbeddedGraphDatabase.java:106)
    at org.neo4j.graphdb.factory.GraphDatabaseFactory$1.newDatabase(GraphDatabaseFactory.java:88)
    at org.neo4j.graphdb.factory.GraphDatabaseBuilder.newGraphDatabase(GraphDatabaseBuilder.java:207)
    at org.neo4j.kernel.impl.recovery.StoreRecoverer.recover(StoreRecoverer.java:114)
    at org.neo4j.server.preflight.PerformRecoveryIfNecessary.run(PerformRecoveryIfNecessary.java:59)
    at org.neo4j.server.preflight.PreFlightTasks.run(PreFlightTasks.java:70)
    at org.neo4j.server.AbstractNeoServer.runPreflightTasks(AbstractNeoServer.java:276)
    at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:162)
    ... 2 more
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.kernel.impl.transaction.XaDataSourceManager@ce8273' was successfully initialized, but failed to start. Please see attached cause exception.
    at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:497)
    at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:104)
    at org.neo4j.kernel.InternalAbstractGraphDatabase.run(InternalAbstractGraphDatabase.java:258)
    ... 10 more
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.kernel.impl.nioneo.xa.NeoStoreXaDataSource@1f5329f' was successfully initialized, but failed to start. Please see attached cause exception.
    at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:497)
    at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:104)
    at org.neo4j.kernel.impl.transaction.XaDataSourceManager.start(XaDataSourceManager.java:128)
    at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:491)
    ... 12 more
Caused by: org.neo4j.kernel.impl.storemigration.UpgradeNotAllowedByConfigurationException: Failed to start Neo4j with an older data store version. To enable automatic upgrade, please set configuration parameter "allow_store_upgrade=true"
    at org.neo4j.kernel.impl.storemigration.ConfigMapUpgradeConfiguration.checkConfigurationAllowsAutomaticUpgrade(ConfigMapUpgradeConfiguration.java:39)
    at org.neo4j.kernel.impl.storemigration.StoreUpgrader.attemptUpgrade(StoreUpgrader.java:66)
    at org.neo4j.kernel.impl.nioneo.store.StoreFactory.tryToUpgradeStores(StoreFactory.java:113)
    at org.neo4j.kernel.impl.nioneo.store.StoreFactory.newNeoStore(StoreFactory.java:96)
    at org.neo4j.kernel.impl.nioneo.xa.NeoStoreXaDataSource.start(NeoStoreXaDataSource.java:240)
    at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:491)
    ... 15 more

Oct 09, 2013 8:49:15 AM org.neo4j.server.logging.Logger log
SEVERE: Failed to start Neo Server on port [7474]

如何清除这个？

Answer 1

根据documentation ,

set the Neo4j configuration parameter "allow_store_upgrade=true" in your neo4j.properties or embedded configuration

希望对您有所帮助。