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Remove existing jar signature and replacing it with a new signature.

Posted by: John Tipton | in java, tips, tools | 3 years, 8 months ago | 1402 comments

After signing a jar file with an existing signature, you may get an error like this:

Working on a server without internet access

Posted by: John Tipton | in linux | 4 years ago | 23 comments

Ever need to install packages or get internet access on a server without internet access? Check out this ingenious post for dealing with the situation. If you can ssh to the server then you can use your internet access over ssh using tsocks.

Oracle Forms and Reports 11g init startup script

Posted by: John Tipton | in oracle | 4 years, 1 month ago | 26 comments

After pulling my hair out searching the web and trying to cobble together shell commands to start and stop Oracle Forms 11g, I finally started playing with nodemanager to script the startup and shutdown. Nodemanager can start and stop all components, except the opmn stuff, and it blocks execution until the service is started. This way I don't have to try to time stuff correctly using sleep commands and it just works a lot better.

Drop empty columns in MySQL

Posted by: John Tipton | in mysql | 4 years, 1 month ago | 25 comments

Ever have a table with a ton of columns some of which aren't used?

Free simple screen sharing

Posted by: John Tipton | in General, tips, tools | 4 years, 3 months ago | 22 comments

Need an easy way to share your screen with someone, but don't want to pay an arm and a leg and are too lazy to setup a VNC session over an ssh tunnel?  Check out screenleap, it's simple and you get 2 hours a day of screen sharing for free.  You don't even have to sign up for an account to try it.

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