SQLdeveloper连接虚拟机Oracle数据库

  在进行数据库连接时需要先启动Oracle数据库，具体操作如下：

[Oracle@localhost ~]$ lsnrctl start //开启数据库监听
[Oracle@localhost ~]$ sqlplus /nolog  //进入sqlplus

SQL*Plus: Release 11.2.0.1.0 Production on Tue Oct 2 01:40:11 2018

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

SQL> conn /as sysdba  //进入sysdba模式
Connected to an idle instance.
SQL> startup //启动数据库
ORACLE instance started.

Total System Global Area  672256000 bytes
Fixed Size		    2216384 bytes
Variable Size		  490737216 bytes
Database Buffers	  176160768 bytes
Redo Buffers		    3141632 bytes
Database mounted.
Database opened.

然后在SQLdeveloper 当中进行数据库连接，记住虚拟机地址可以再虚拟机终端通过ifconfig进行查看。