linux下启动db数据库命令

DB2相关数据库命令

1.数据库实例的启动

首先要启动数据库的实例,即切换到db2inst1用户(注:db2inst1用户为当前数据库的实例),然后执行db2start启动数据库的实例 [root@localhost instance]# su - db2inst1 [db2inst1@localhost ~]$ db2start

SQL1063N DB2START processing was successful. [db2inst1@localhost ~]$

2.数据库实例的关闭

首先在db2inst1用户下强制关闭实例上的所有应用程序,然后再关闭数据库实例

[db2inst1@localhost ~]$ db2 force application all

DB20000I The FORCE APPLICATION command completed successfully. DB21024I This command is asynchronous and may not be effective immediately.

[db2inst1@localhost ~]$ db2stop

SQL1064N DB2STOP processing was successful. [db2inst1@localhost ~]$ 强制停止

[db2inst1@localhost DB2]$ db2stop force SQL1064N DB2STOP processing was successful. [db2inst1@localhost DB2]$

3.显示所有的实例

[db2inst1@localhost ~]$ db2ilist db2inst1

[db2inst1@localhost ~]$

4.显示当前的实例

[db2inst1@localhost ~]$ db2 get instance

The current database manager instance is: db2inst1

[db2inst1@localhost ~]$

5.删除一个实例(注:需切换到root用户权限下) [root@localhost ~]# cd /opt/ibm/db2/V9.7/instance [root@localhost instance]# pwd /opt/ibm/db2/V9.7/instance

[root@localhost instance]# ./db2idrop db2inst1 DBI1070I Program db2idrop completed successfully.

[root@localhost instance]#

6.列出当前实例中有哪些数据库 [root@localhost instance]# su - db2inst1 [db2inst1@localhost ~]$ db2 list db directory

SQL1031N The database directory cannot be found on the indicated file system.

SQLSTATE=58031 [db2inst1@localhost ~]$

注:上面信息说明实例中没有数据库

7.创建数据库

[root@localhost instance]# su - db2inst1

[db2inst1@localhost ~]$ db2 create database test

SQL1032N No start database manager command was issued. SQLSTATE=57019 [db2inst1@localhost ~]$ [db2inst1@localhost ~]$ db2start

SQL5043N Support for one or more communications protocols failed to start successfully. However, core database manager functionality started successfully.

[db2inst1@localhost ~]$ db2 create database test

DB20000I The CREATE DATABASE command completed successfully. [db2inst1@localhost ~]$ db2 list db directory

System Database Directory

Number of entries in the directory = 1

Database 1 entry:

Database alias = TEST Database name = TEST Local database directory = /home/db2inst1 Database release level = d.00