Upgrading ruby form 1.8.7 to 1.9.3 cuased server crash

Upgrading ruby form 1.8.7 to 1.9.3 cuased server crash

References

Reference NO 1

http://stackoverflow.com/questions/15202807/upgrading-ruby-form-1-8-7-to-1-9-3-cuased-server-crash

Reference NO 2

http://stackoverflow.com/questions/7315946/is-there-a-way-to-upgrade-from-ruby-1-8-7-to-1-9-2-without-having-to-reinstall-g

Reference NO 3

http://stackoverflow.com/questions/5305376/manually-compiling-ruby-1-8-7-on-ubuntu-hardy

Reference NO 4

http://stackoverflow.com/questions/11139510/using-env-var-to-just-specify-database-name

Reference NO 5

http://edgeguides.rubyonrails.org/upgrading_ruby_on_rails.html

Reference NO 6

https://github.com/halhenke/doctor/blob/master/Catalyst%20Related/Hurricane/Hurricane%20Upgrade%20Documentation.org

Reference NO 7

#EANF#

Reference NO 8

#EANF#