org.netbeans.api.db.explorer.DatabaseException: Operation not allowed after ResultSet closed
        at org.netbeans.modules.db.explorer.infos.TableListNodeInfo.initChildren(TableListNodeInfo.java:110)
        at org.netbeans.modules.db.explorer.infos.DatabaseNodeInfo.getChildren(DatabaseNodeInfo.java:688)
        at org.netbeans.modules.db.explorer.nodes.DatabaseNode$DatabaseNodeChildFactory.createKeys(DatabaseNode.java:382)
        at org.openide.nodes.AsynchChildren.run(AsynchChildren.java:147)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997)
java.sql.SQLException: Operation not allowed after ResultSet closed
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1056)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:957)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:927)
        at com.mysql.jdbc.ResultSetImpl.checkClosed(ResultSetImpl.java:770)
        at com.mysql.jdbc.ResultSetImpl.getMetaData(ResultSetImpl.java:2975)
        at org.netbeans.lib.ddl.impl.DriverSpecification.getRow(DriverSpecification.java:225)
        at org.netbeans.modules.db.explorer.infos.TableListNodeInfo.initChildren(TableListNodeInfo.java:96)
        at org.netbeans.modules.db.explorer.infos.DatabaseNodeInfo.getChildren(DatabaseNodeInfo.java:688)
        at org.netbeans.modules.db.explorer.nodes.DatabaseNode$DatabaseNodeChildFactory.createKeys(DatabaseNode.java:382)
        at org.openide.nodes.AsynchChildren.run(AsynchChildren.java:147)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997)