Please explain:
Your OTRS version.
Your database
Your OS
What you're trying to accomplish (assuming that you're going to repeat your statements, then tell us why you want to do this.)
What you tried (appropriate snippets of code or Config.pm might be helpful).
What happens (full error messages)
What you expect to happen
If you're using an external backend, that's helpful, knowledge, too.
What you searched for on the Internet to assist your goal before you posted might be helpful (An array of responses from people on the list with you responding "I tried that and it didn't work" isn't necessarily going to be useful to solve your problem).
Also, please attempt to use proper (English) sentence structure. Start sentences with capital letters. End sentences with punctuation. Spell out (properly?) full words.