org.netbeans.api.db.explorer.DatabaseException: org.netbeans.api.db.explorer.DatabaseException: unable to connect to server at org.netbeans.modules.db.explorer.infos.RootNodeInfo.initChildren(RootNodeInfo.java:170) at org.netbeans.modules.db.explorer.infos.DatabaseNodeInfo.getChildren(DatabaseNodeInfo.java:697) at org.netbeans.modules.db.explorer.infos.DatabaseNodeInfo.refreshChildren(DatabaseNodeInfo.java:357) at org.netbeans.modules.db.explorer.infos.RootNodeInfo.refreshChildren(RootNodeInfo.java:305) at org.netbeans.modules.db.explorer.infos.RootNodeInfo.stateChanged(RootNodeInfo.java:297) at org.netbeans.modules.db.explorer.infos.RootNodeInfo$1.connectionsChanged(RootNodeInfo.java:103) at org.netbeans.modules.db.explorer.ConnectionList.fireListeners(ConnectionList.java:197) at org.netbeans.modules.db.explorer.ConnectionList.access$000(ConnectionList.java:71) at org.netbeans.modules.db.explorer.ConnectionList$1.resultChanged(ConnectionList.java:104) at org.openide.util.lookup.AbstractLookup.notifyListeners(AbstractLookup.java:518) at org.openide.util.lookup.AbstractLookup$1Notify.run(AbstractLookup.java:308) at org.openide.loaders.FolderLookup$Dispatch.run(FolderLookup.java:304) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997) org.netbeans.api.db.explorer.DatabaseException: unable to connect to server at org.netbeans.modules.db.explorer.infos.ConnectionNodeInfo.connect(ConnectionNodeInfo.java:395) at org.netbeans.modules.db.explorer.infos.RootNodeInfo.createConnectionNodeInfo(RootNodeInfo.java:227) at org.netbeans.modules.db.explorer.infos.RootNodeInfo.initChildren(RootNodeInfo.java:154) at org.netbeans.modules.db.explorer.infos.DatabaseNodeInfo.getChildren(DatabaseNodeInfo.java:697) at org.netbeans.modules.db.explorer.infos.DatabaseNodeInfo.refreshChildren(DatabaseNodeInfo.java:357) at org.netbeans.modules.db.explorer.infos.RootNodeInfo.refreshChildren(RootNodeInfo.java:305) at org.netbeans.modules.db.explorer.infos.RootNodeInfo.stateChanged(RootNodeInfo.java:297) at org.netbeans.modules.db.explorer.infos.RootNodeInfo$1.connectionsChanged(RootNodeInfo.java:103) at org.netbeans.modules.db.explorer.ConnectionList.fireListeners(ConnectionList.java:197) at org.netbeans.modules.db.explorer.ConnectionList.access$000(ConnectionList.java:71) at org.netbeans.modules.db.explorer.ConnectionList$1.resultChanged(ConnectionList.java:104) at org.openide.util.lookup.AbstractLookup.notifyListeners(AbstractLookup.java:518) at org.openide.util.lookup.AbstractLookup$1Notify.run(AbstractLookup.java:308) at org.openide.loaders.FolderLookup$Dispatch.run(FolderLookup.java:304) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997) org.netbeans.lib.ddl.DDLException: unable to connect to server at org.netbeans.lib.ddl.impl.SpecificationFactory.createSpecification(SpecificationFactory.java:188) at org.netbeans.modules.db.explorer.infos.ConnectionNodeInfo.connect(ConnectionNodeInfo.java:376) at org.netbeans.modules.db.explorer.infos.RootNodeInfo.createConnectionNodeInfo(RootNodeInfo.java:227) at org.netbeans.modules.db.explorer.infos.RootNodeInfo.initChildren(RootNodeInfo.java:154) at org.netbeans.modules.db.explorer.infos.DatabaseNodeInfo.getChildren(DatabaseNodeInfo.java:697) at org.netbeans.modules.db.explorer.infos.DatabaseNodeInfo.refreshChildren(DatabaseNodeInfo.java:357) at org.netbeans.modules.db.explorer.infos.RootNodeInfo.refreshChildren(RootNodeInfo.java:305) at org.netbeans.modules.db.explorer.infos.RootNodeInfo.stateChanged(RootNodeInfo.java:297) at org.netbeans.modules.db.explorer.infos.RootNodeInfo$1.connectionsChanged(RootNodeInfo.java:103) at org.netbeans.modules.db.explorer.ConnectionList.fireListeners(ConnectionList.java:197) at org.netbeans.modules.db.explorer.ConnectionList.access$000(ConnectionList.java:71) at org.netbeans.modules.db.explorer.ConnectionList$1.resultChanged(ConnectionList.java:104) at org.openide.util.lookup.AbstractLookup.notifyListeners(AbstractLookup.java:518) at org.openide.util.lookup.AbstractLookup$1Notify.run(AbstractLookup.java:308) at org.openide.loaders.FolderLookup$Dispatch.run(FolderLookup.java:304) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997) com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after connection closed. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(NativeConstructorAccessorImpl.java:0) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at com.mysql.jdbc.Util.handleNewInstance(Util.java:406) at com.mysql.jdbc.Util.getInstance(Util.java:381) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:926) at com.mysql.jdbc.ConnectionImpl.checkClosed(ConnectionImpl.java:1098) at com.mysql.jdbc.ConnectionImpl.getMetaData(ConnectionImpl.java:2987) at com.mysql.jdbc.ConnectionImpl.getMetaData(ConnectionImpl.java:2982) at org.netbeans.lib.ddl.impl.SpecificationFactory.createSpecification(SpecificationFactory.java:181) at org.netbeans.modules.db.explorer.infos.ConnectionNodeInfo.connect(ConnectionNodeInfo.java:376) at org.netbeans.modules.db.explorer.infos.RootNodeInfo.createConnectionNodeInfo(RootNodeInfo.java:227) at org.netbeans.modules.db.explorer.infos.RootNodeInfo.initChildren(RootNodeInfo.java:154) at org.netbeans.modules.db.explorer.infos.DatabaseNodeInfo.getChildren(DatabaseNodeInfo.java:697) at org.netbeans.modules.db.explorer.infos.DatabaseNodeInfo.refreshChildren(DatabaseNodeInfo.java:357) at org.netbeans.modules.db.explorer.infos.RootNodeInfo.refreshChildren(RootNodeInfo.java:305) at org.netbeans.modules.db.explorer.infos.RootNodeInfo.stateChanged(RootNodeInfo.java:297) at org.netbeans.modules.db.explorer.infos.RootNodeInfo$1.connectionsChanged(RootNodeInfo.java:103) at org.netbeans.modules.db.explorer.ConnectionList.fireListeners(ConnectionList.java:197) at org.netbeans.modules.db.explorer.ConnectionList.access$000(ConnectionList.java:71) at org.netbeans.modules.db.explorer.ConnectionList$1.resultChanged(ConnectionList.java:104) at org.openide.util.lookup.AbstractLookup.notifyListeners(AbstractLookup.java:518) at org.openide.util.lookup.AbstractLookup$1Notify.run(AbstractLookup.java:308) at org.openide.loaders.FolderLookup$Dispatch.run(FolderLookup.java:304) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997)