Advice  on long running queries

Hi all
I am a junior dba and facing problem of log runninig queries. Can anyone help and let me know how to resolve the long running queries. I mean what should be the approach to findout out the problem.
Please guide me.
thanx
Ajay

>
OK, so what about your buddy Jonathan Lewis who
includes THREE hyperlinks in his sig line?
Regards
Jonathan Lewis
http://jonathanlewis.wordpress.com
Author: Cost Based Oracle: Fundamentals
http://www.jlcomp.demon.co.uk/cbo_book/ind_book.html
The Co-operative Oracle Users' FAQ
http://www.jlcomp.demon.co.uk/faq/ind_faq.html
Tsk, tsk, the naughty little man is telling lies again.
There's a search feature on the Oracle forum - it let's you search by user and ask for key words. I've searched against my identify looking for "ind_faq", and then for "cbo_book". It doesn't return any posts with that sig.
And here's another thought: your comment about me being a buddy of Sybrand (who you were trying to claim did not exist just a few hours ago) reminded me that I have had reasons to criticise him in the recent past - for example Re: to_char and performance - and he managed to take it without descending into a hissy fit.
And finally - a little logical error on your part. The fact that I know that Sybrand Bakker exists does not mean that he is a buddy of mine or that I am a buddy of his. After all, I know that you exist.
Regards
Jonathan Lewis
http://jonathanlewis.wordpress.com
http://www.jlcomp.demon.co.uk

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