要解决"AWS Neptune 查询正在阻塞所有其他查询"的问题，可以按照以下步骤进行：

1. 使用AWS Management Console或AWS CLI连接到您的AWS Neptune数据库。

2. 执行以下代码示例中的查询，以查找正在阻塞其他查询的查询ID。

import com.amazonaws.services.neptune.AmazonNeptune;
import com.amazonaws.services.neptune.model.DescribeDBClustersRequest;
import com.amazonaws.services.neptune.model.DescribeDBClustersResult;
import com.amazonaws.services.neptune.model.DescribeDBClusterSnapshotsRequest;
import com.amazonaws.services.neptune.model.DescribeDBClusterSnapshotsResult;
import com.amazonaws.services.neptune.model.DescribeDBInstancesRequest;
import com.amazonaws.services.neptune.model.DescribeDBInstancesResult;
import com.amazonaws.services.neptune.model.DescribeDBClusterParameterGroupsRequest;
import com.amazonaws.services.neptune.model.DescribeDBClusterParameterGroupsResult;
import com.amazonaws.services.neptune.model.DescribeDBClusterParametersRequest;
import com.amazonaws.services.neptune.model.DescribeDBClusterParametersResult;
import com.amazonaws.services.neptune.model.DescribeDBClusterEndpointsRequest;
import com.amazonaws.services.neptune.model.DescribeDBClusterEndpointsResult;
import com.amazonaws.services.neptune.model.DescribeDBClusterDbClusterParameterGroupsRequest;
import com.amazonaws.services.neptune.model.DescribeDBClusterDbClusterParameterGroupsResult;
import com.amazonaws.services.neptune.model.DescribeDBClusterDbInstanceParameterGroupsRequest;
import com.amazonaws.services.neptune.model.DescribeDBClusterDbInstanceParameterGroupsResult;
import com.amazonaws.services.neptune.model.DescribeDBClusterDbClusterOptionGroupsRequest;
import com.amazonaws.services.neptune.model.DescribeDBClusterDbClusterOptionGroupsResult;
import com.amazonaws.services.neptune.model.DescribeDBClusterDbInstanceOptionGroupsRequest;
import com.amazonaws.services.neptune.model.DescribeDBClusterDbInstanceOptionGroupsResult;
import com.amazonaws.services.neptune.model.DescribeDBClusterEngineVersionsRequest;
import com.amazonaws.services.neptune.model.DescribeDBClusterEngineVersionsResult;
import com.amazonaws.services.neptune.model.DescribeDBClusterParameterGroupsRequest;
import com.amazonaws.services.neptune.model.DescribeDBClusterParameterGroupsResult;
import com.amazonaws.services.neptune.model.DescribeDBClusterParametersRequest;
import com.amazonaws.services.neptune.model.DescribeDBClusterParametersResult;
import com.amazonaws.services.neptune.model.DescribeDBClusterSnapshotsRequest;
import com.amazonaws.services.neptune.model.DescribeDBClusterSnapshotsResult;
import com.amazonaws.services.neptune.model.DescribeDBClustersRequest;
import com.amazonaws.services.neptune.model.DescribeDBClustersResult;
import com.amazonaws.services.neptune.model.DescribeDBInstancesRequest;
import com.amazonaws.services.neptune.model.DescribeDBInstancesResult;
import com.amazonaws.services.neptune.model.DescribeDBParameterGroupsRequest;
import com.amazonaws.services.neptune.model.DescribeDBParameterGroupsResult;
import com.amazonaws.services.neptune.model.DescribeDBParametersRequest;
import com.amazonaws.services.neptune.model.DescribeDBParametersResult;
import com.amazonaws.services.neptune.model.DescribeEngineDefaultParametersRequest;
import com.amazonaws.services.neptune.model.DescribeEngineDefaultParametersResult;
import com.amazonaws.services.neptune.model.DescribeEventsRequest;
import com.amazonaws.services.neptune.model.DescribeEventsResult;
import com.amazonaws.services.neptune.model.DescribeEventSubscriptionsRequest;
import com.amazonaws.services.neptune.model.DescribeEventSubscriptionsResult;
import com.amazonaws.services.neptune.model.DescribeOrderableDBInstanceOptionsRequest;
import com.amazonaws.services.neptune.model.DescribeOrderableDBInstanceOptionsResult;
import com.amazonaws.services.neptune.model.DescribePendingMaintenanceActionsRequest;
import com.amazonaws.services.neptune.model.DescribePendingMaintenanceActionsResult;
import com.amazonaws.services.neptune.model.DescribeValidDBInstanceModificationsRequest;
import com.amazonaws.services.neptune.model.DescribeValidDBInstanceModificationsResult;
import com.amazonaws.services.neptune.model.DescribeValidDBInstanceModificationsRequest;
import com.amazonaws.services.neptune.model.DescribeValidDBInstanceModificationsResult;

public class NeptuneQueryBlockingExample {

    public static void main(String[] args) {
        // 创建AmazonNeptune客户端
        AmazonNeptune client = AmazonNeptuneClientBuilder.defaultClient();

        // 获取所有正在执行的查询
        DescribeDBClustersResult dbClustersResult = client.describeDBClusters(new DescribeDBClustersRequest());
        dbClustersResult.getDBClusters().forEach(cluster -> {
            System.out.println("Cluster Identifier: " + cluster.getDBClusterIdentifier());
            DescribeDBClusterEndpointsResult endpointsResult = client.describeDBClusterEndpoints(new DescribeDBClusterEndpointsRequest().withDBClusterIdentifier(cluster.getDBClusterIdentifier()));
            endpointsResult.getDBClusterEndpoints().forEach(endpoint -> {
                System.out.println("Endpoint: " + endpoint.getEndpoint());
                DescribeDBInstancesResult instancesResult = client.describeDBInstances(new DescribeDBInstancesRequest().withDBClusterIdentifier(cluster.getDBCluster