Java 在oracle nodemanager中获取错误-命令'；同步变更列表'；失败

在使用Form and Reports 12.2.1.2安装Oracle Weblogic 12.2.1.2之后，我看到了很多类似这样的错误：

Cannot load the plugin factory oracle.forms.plugin.cam.FormsPluginFactory from the classloader. java.lang.ExceptionInInitializerError        
Dec 17, 2016 11:28:15 AM oracle.dms.cam.metrics.LocalDmsChannel oracle.dms.cam.metrics.LocalDmsChannel
    INFO: DMS startup class is not started. DMS runs with reduced functionality.
    <Dec 17, 2016 11:28:16 AM EET> <WARNING> <Processing for FORMS server 'forms1' failed due to: [Plugin not found for system component type 'FORMS', plugin type 'PROCESS']. Please check Node Manager log and/or server 'forms1' log for detailed information.>
    <Dec 17, 2016 1:04:20 PM EET> <WARNING> <Node Manager command 'SYNC_CHANGELIST' failed unexpectedly due to: [Plugin not found for system component type 'FORMS', plugin type 'REPLICATION']. Please check Node Manager log and/or server log for detailed information.>

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在谷歌上找不到任何信息。也许有人知道怎么修理它

看起来我的问题的根源在这里：无法从类加载器加载插件工厂oracle.forms.plugin.cam.FormsPluginFactory。java.lang.ExceptionInInitializerRor看起来我的问题的根源是：无法从类加载器加载插件工厂oracle.forms.plugin.cam.FormsPluginFactory。java.lang.ExceptionInInitializeError

Received error message from Node Manager Server: [Node Manager command 'SYNC_CHANGELIST' failed unexpectedly due to: [Plugin not found for system component type 'FORMS', plugin type 'REPLICATION']. Please check Node Manager log and/or server log for detailed information.]. Please check Node Manager log for details.