Enable FTP for Mac OS X Lion

I was just wondering where is the FTP option for Mac OS X Lion. It used to be in System Preferences -> Sharing but with OS X Lion, it looks like the FTP option is removed but it is not!

To enable FTP, you need to run the following in the terminal
sudo -s launchctl load -w /System/Library/LaunchDaemons/ftp.plist

To disable,
sudo -s launchctl unload -w /System/Library/LaunchDaemons/ftp.plist

7 Tips for Better Jdeveloper Experience

7 Tips For Better JDeveloper Experience

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Installing Oracle XE 11g on Ubuntu 11.10

Ubuntu is not supported OS for Oracle XE 11g but still we can make it work by following below post. The main issue is due to memory management used by previous version vs ubuntu 11.10.

https://forums.oracle.com/forums/thread.jspa?threadID=2301639

More information about creating users & workspace - http://docs.oracle.com/cd/E17781_01/admin.112/e18585/toc.htm#autoId3

Oracle XE 11g Post Installation Issue

After installing Oracle XE 11g database, if you get below error when running below command,

[root@*** ~]# /etc/init.d/oracle-xe status

LSNRCTL for Linux: Version 11.2.0.2.0 - Beta on 19-APR-2011 04:07:41

Copyright (c) 1991, 2010, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC_FOR_XE)))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
 TNS-00511: No listener
  Linux Error: 111: Connection refused
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=*******)(PORT=1521)))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
 TNS-00511: No listener
  Linux Error: 111: Connection refused

then it is an issue with network settings of your OS. The main reason is that the listener.ora was referencing a network settings which was modified after the Oracle XE installation.

The solution is to rename the listener.ora to something different (for example, listener.ora_old) and then restart the database by /etc/init.d/oracle-xe restart