db2数据常用命令

2019/04/28 15:41
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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

Comment                              =

Directory entry type                 = Indirect

Catalog database partition number    = 0

Alternate server hostname            =

Alternate server port number         =

[db2inst1@localhost ~]$

注:上面通过创建一个test的数据库,并说明了创建数据库时,要先启动数据库,然后创建数据库tes

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