常用的DB2命令
启动数据库：启动db2服务：db2start激活数据库实例：db2 activate database lt;db_namegt;查看激活状态的数据库：db2 list ac
启动数据库：
启动db2服务：db2start
激活数据库实例：db2 activate database
查看激活状态的数据库：db2 list active databases
关闭数据库：
失效数据库实例：db2 deactivate database
关闭数据库服务：db2stop
查看数据库：db2 list db directory
查看数据库应用：db2 list applications
查看数据库应用和进程号：db2 list applications show detail
查看数据库表空间：db2pd -db
查看数据库配置：db2 get db cfg for
连接数据库：db2 connect to
db2 connect to
断开数据库连接：db2 connect reset/db2 terminate
创建数据库：db2 create db
删除数据库：db2 drop database
列出系统表：db2 list tables for system
列出所有用户表：db2 list tables
列出所有表：db2 list tables for all
列出特定用户表：db2 list tables for schema [user]
复制一张表：db2 create table t1 like t2
显示表结构：db2 describe table tablename
查询表：db2 "select * from table tablename where ..."
执行SQL脚本：db2 -tvf scripts.sql
查看错误代码信息：db2 ? 10054
停止激活的连接：db2 force application all;\db2 force application all;\db2 force application all;\db2stop
查看死锁： db2 get snapshot for locks on
db2 "select agent_id,tabname,lock_mode from table(snap_get_lock('
杀掉进程： db2 force application(NUM)
监控DB2消耗多的SQL语句：
eg:（DB_NAME=CMSDB）
db2top -d CMSDB -----查看消耗资源 按照提示按 l，出现Application Handle，找到资源消耗大的Application Handle（stat）
记下app handle。
db2pd -d CMSDB -dyn -application > /tmp/db2pd1.txt ----到处会话语句，，准备进行调优
设置连接方式（重启才会生效）：
db2set DB2COMM=tcpip
db2set DB2COMM=
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