以关闭所有活动为例 public class ActivityCollector { public static List<Activity> activities = new ArrayList<Activity>(); public static void addActivity(Activity activity) { activities.add(activity); } public static void removeActivity(Activity activity…
ActivityCollector.java import android.app.Activity; import java.util.ArrayList; import java.util.List; //活动汇总管理 public class ActivityCollector { public static List<Activity> activities = new ArrayList<Activity>(); //添加活动 public static void add…
当我们在使用drop database testdb命令删除数据库时,会提示该数据库正在被使用,这样我们就无法删除,此时我们可以通过如下语句断开该数据库的所有链接: SELECT pg_terminate_backend(pg_stat_activity.pid) FROM pg_stat_activity WHERE datname='testdb' AND pid<>pg_backend_pid(); 说明: 1.pg_terminate_backend表示终止与数据库的链接的进程id的函…
First, find the activities that are taken place against the target database, you can query thepg_stat_activity view as the following query: SELECT * FROM pg_stat_activity WHERE datname = 'target_database'; Second, terminate the active connections by…
