2016-07-19T14:16:36.370+0530 INFO main com.facebook.presto.server.PluginManager -- Finished loading plugin /var/presto/data/plugin/atop --
2016-07-19T14:16:36.370+0530 INFO main com.facebook.presto.server.PluginManager -- Loading plugin /var/presto/data/plugin/blackhole --
2016-07-19T14:16:36.371+0530 INFO main com.facebook.presto.server.PluginManager Installing com.facebook.presto.plugin.blackhole.BlackHolePlugin
2016-07-19T14:16:36.379+0530 INFO main com.facebook.presto.server.PluginManager Registering connector blackhole
2016-07-19T14:16:36.380+0530 INFO main com.facebook.presto.server.PluginManager Installing com.facebook.presto.plugin.oracle.OraclePlugin
2016-07-19T14:16:36.380+0530 INFO main com.facebook.presto.server.PluginManager Registering connector oracle
2016-07-19T14:16:36.380+0530 ERROR main com.facebook.presto.server.PrestoServer Connector oracle is already registered
java.lang.IllegalArgumentException: Connector oracle is already registered
at com.google.common.base.Preconditions.checkArgument(Preconditions.java:145)
at com.facebook.presto.connector.ConnectorManager.addConnectorFactory(ConnectorManager.java:139)
at com.facebook.presto.server.PluginManager.installPlugin(PluginManager.java:216)
at com.facebook.presto.server.PluginManager.loadPlugin(PluginManager.java:184)
at com.facebook.presto.server.PluginManager.loadPlugin(PluginManager.java:167)
at com.facebook.presto.server.PluginManager.loadPlugins(PluginManager.java:148)
at com.facebook.presto.server.PrestoServer.run(PrestoServer.java:113)
at com.facebook.presto.server.PrestoServer.main(PrestoServer.java:63)