1、 如何登陆数据库？
openlab% sqlplus tarena/tarena
2、 如何编译C/C++程序？
openlab% cc -o helloworld helloworld.c
或者：
openlab% /usr/local/bin/gcc -o helloworld helloworld.c
3、 如何寻求在线帮助？
请运行tarena命令。
openlab% tarena
4、如有其它问题，怎么处理？
请发mail至openlab@tarena.ca或登录达内科技传播公司网页www.tarena.ca在'精英答疑'栏目中留下您的问题，我们将在 24小时之内答复您的问题。
5、 如何编译和运行Java程序？
openlab% javac HelloWorld.java
openlab% java HelloWorld
6、 如何编译和运行Perl程序？
openlab% perl helloworld.pl
7、 如何编译和运行Tcl程序？
openlab% tcl helloworld.tcl
8、 编译器（Compiler）程序存放的目录在哪里？
/usr/local/bin/gcc
/workdisk/SUNWspro
/bin/cc /bin/javac
/bin/java /bin/perl
9、 如何创建自己的网页？
A. login onto Tarena Open Lab.
B. in your home directory, for example /tarenauser/yourname, create a new directory "public_html":
openlab% mkdir public_html
C. put all your webpages under the "public_html direcory
D. then you could access those pages at any web browser in the world, for example:
http://www.openlab.com.cn/~cftang/index.html
10、 在实验室内如何和其他室友交谈？
A. send a request to somebody you want to talk by: openlab% talk username For example, suppose you are the user "tom", and you want to "talk" to user "john", type:
openlab% talk john
B. If the user john is online, and he is willing to talk to you as well, he will response by typing:
openlab% talk tom
C. The connection between you two will be built then. You could start to chat to each other.
11、如何从客户端连接到ORACLE数据库 TARENADB
A：根据客户端所用的不同操作系统，安装和设置ORACLE客户端应用软件。
B：用ORACLE NET8 ASSISTANT 设置ORACLE NET8客户端参数。
C：在sqlnet.ora文件中，应包括以下语句:
NAMES.DIRECTORY_PATH= (TNSNAMES, ONAMES, HOSTNAME)
D: 在tnsnames.ora文件中, 应包括以下语句:
TARENADB =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = openlab)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = TARENADB)
)
)
E: 用以下语句从客户端连接到ORACLE数据库 TARENADB:
sqlplus tarena/tarena@TARENADB
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