Disabling Superfetch in windows 7 and 8

You know, when you open task manager, in performance tab, you’ll see a new line than in windows xp, there is “cached memory”.
This is supposedly so when you open the application again, it will be faster, but the side effect is that it eats up your RAM, and disastrous result in low physical RAM since it will drive your free RAM to 0, thus snailing your computer.
So to disable it, it will makes your system lag a bit, but at least your RAM will not be reserved for cache…
There are two steps, first is editing the registry and second is disabling the service.

– Editing the registry: Continue reading

enable oracledb connection through firewall

well my company has oracle 8i, and up until now we never turn on firewall in our intra network. but things got complicated when the worm named kido start to crawl our network. so we take policy to turn on the firewall.
but of course the first time we turn it on the oracle db cannot be connected: TNS-12535 TNS:operation timed out from other computer even though we already put an exception on post 1521 and only accept own network ip range. Continue reading