java - 如何更正 orientdb 中的异常 database.ocf' 被另一个进程锁定？

Question

当我尝试使用 Java 连接到 orient 数据库时出现异常。以下是我遇到的异常。

Jun 07, 2016 12:43:40 PM com.orientechnologies.common.log.OLogManager log
INFO: OrientDB auto-config DISKCACHE=891MB (heap=891MB direct=891MB os=4,006MB), assuming maximum direct memory size equals to maximum JVM heap size
Jun 07, 2016 12:43:40 PM com.orientechnologies.common.log.OLogManager log
WARNING: MaxDirectMemorySize JVM option is not set or has invalid value, that may cause out of memory errors. Please set the -XX:MaxDirectMemorySize=4006m option when you start the JVM.
Jun 07, 2016 12:43:40 PM com.orientechnologies.common.log.OLogManager log
WARNING: MaxDirectMemorySize JVM option is not set or has invalid value, that may cause out of memory errors. Please set the -XX:MaxDirectMemorySize=4006m option when you start the JVM.
Exception in thread "main" com.orientechnologies.orient.core.exception.OFileLockedByAnotherProcessException: File 'F:\Program Files\orientdb-community-2.2.0\databases\mydbo\database.ocf' is locked by another process, maybe the database is in use by another process. Use the remote mode with a OrientDB server to allow multiple access to the same database at com.orientechnologies.orient.core.storage.fs.OFileClassic.lock(OFileClassic.java:756)
    at com.orientechnologies.orient.core.storage.fs.OFileClassic.openChannel(OFileClassic.java:813)
    at com.orientechnologies.orient.core.storage.fs.OFileClassic.open(OFileClassic.java:603)
    at com.orientechnologies.orient.core.storage.impl.local.OSingleFileSegment.open(OSingleFileSegment.java:51)
    at com.orientechnologies.orient.core.storage.impl.local.OStorageConfigurationSegment.load(OStorageConfigurationSegment.java:80)
    at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.open(OAbstractPaginatedStorage.java:186)
    at com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx.open(ODatabaseDocumentTx.java:231)
    at orient.insert.Insert.main(Insert.java:12)

这是我试过的代码。

ODatabaseDocumentTx db = new ODatabaseDocumentTx("plocal:F:/Program Files/orientdb-community-2.2.0/databases/mydbo").open("admin", "admin");

ODocument doc = new ODocument("Person");
doc.field( "name", "Luke" );
doc.field( "surname", "Skywalker" );
doc.field( "city", new ODocument("City").field("name","Rome").field("country", "Italy") );


doc.save();
db.close();

我无法弄清楚我遇到的错误。

Answer 1

您有一个正在运行的服务器，您尝试从 plocal 中的另一个进程打开数据库。您能否验证在 plocal(控制台或外部进程)中访问 OrientDB 实例时没有 Activity 的 OrientDB 实例，并且您一次打开一个 plocal 连接？