大家好，我已经成功地在Linux VM(谷歌云计算(上安装了Oracle 11g Express附加功能。 我有sqlplus工作，我可以查询数据。 侦听器也在工作。
但是由于Linux服务器没有GUI，我无法尝试本地主机，并且外部计算机拒绝了连接。
我的问题是：
1(Apex是否预装在Oracle XE上，它曾经在任何地方都没有提到。
2( 如果服务器的 IP 地址是 123.123.123，我将使用哪个 URL 从远程计算机访问 Apex？我试过了
- http://123.123.123:8080/apex/
- http://123.123.123/apex/
- https://123.123.123:8080/apex/
3(如何判断是服务器还是Oracle拒绝连接？
防火墙
$ netstat -ant
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN
tcp 0 0 10.128.0.3:50776 169.254.169.254:80 ESTABLISHED
tcp 0 0 10.128.0.3:43548 10.128.0.3:1521 ESTABLISHED
tcp 0 0 10.128.0.3:50722 169.254.169.254:80 CLOSE_WAIT
tcp 0 0 10.128.0.3:50814 169.254.169.254:80 ESTABLISHED
tcp 0 0 10.128.0.3:50774 169.254.169.254:80 ESTABLISHED
tcp 0 64 10.128.0.3:22 74.125.41.105:38312 ESTABLISHED
tcp6 0 0 :::40070 :::* LISTEN
tcp6 0 0 :::8080 :::* LISTEN
tcp6 0 0 :::1521 :::* LISTEN
tcp6 0 0 :::22 :::* LISTEN
tcp6 0 0 ::1:25 :::* LISTEN
tcp6 0 0 10.128.0.3:1521 10.128.0.3:43548 ESTABLISHED
听者
$ lsnrctl status
LSNRCTL for Linux: Version 11.2.0.2.0 - Production on 22-AUG-2017 02:59:51
Copyright (c) 1991, 2011, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC_FOR_XE)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.2.0 - Production
Start Date 22-AUG-2017 02:00:17
Uptime 0 days 0 hr. 59 min. 33 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Default Service XE
Listener Parameter File /u01/app/oracle/product/11.2.0/xe/network/admin/listener.ora
Listener Log File /u01/app/oracle/diag/tnslsnr/centossmallblockpro/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC_FOR_XE)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=centossmallblockpro.c.sincere-destiny-176110.internal)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=centossmallblockpro.c.sincere-destiny-176110.internal)(PORT=8080))(Presentation=HTTP)(Session=RAW))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "XE" has 1 instance(s).
Instance "XE", status READY, has 1 handler(s) for this service...
Service "XEXDB" has 1 instance(s).
Instance "XE", status READY, has 1 handler(s) for this service...
The command completed successfully
SQL加工作
sqlplus
SQL*Plus: Release 11.2.0.2.0 Production on Tue Aug 22 03:03:51 2017
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Enter user-name: system
Enter password:
Connected to:
Oracle Database 11g Express Edition Release 11.2.0.2.0 - 64bit Production
SQL> select * from dual;
D
-
X
.
Telnet XX.XXX.XXX.XX 8080
Telnet: Unable to connect to remote host: Connection timed out
1(我认为Oracle XE(11g(带有APEX版本3.2。这是一个非常古老的 APEX 版本。按照说明如何删除此旧版本并从 otn.oracle.com 获取最新版本。最新版本也应该适用于11g XE。
2( 隧道
您可以创建从桌面计算机到运行服务的端点服务器的 ssh 隧道。现在，您可以从桌面环境访问远程计算机上的服务。sqlplus，SQL Developer，Firefox等。
# Access Your Database Remotely Through an SSH Tunnel
# ssh -L [local port]:[database host]:[remote port] [username]@[remote host]
# console 1: 9998 is just an arbitrary port > 1024. Can be anything.
ssh -N -L 9998:10.128.0.3:1521 -i ~/.ssh/id_rsa user@35.184.136.98
# console 2:
sqlplus user/pwd@localhost:9998/XE
# firefox:
http://localhost:9998/apex
Bjarte 对 1 和 2 的回答很好，但实际问题不是 Linux 防火墙，而是计算引擎防火墙。
我甚至不知道它的存在，当您选中复选框以打开 Http 时，它为 TCP：80 创建了一个规则，但我需要 TCP：8080。
这是为我解决它的文章，无法在谷歌计算引擎上打开端口......