Re: How to identify tablescans ???

Hi,

I wouldn't recommend to use any tool for index generation, I thonk it has to be done manually, because sometimes too many indexes is as bad as having none.
You can use a lot of tool which tell execution plan for specific statement, i.e. SQL navigator.

Gocha

Soeren Dalby wrote in message <7is1ps$4hk$2_at_news.inet.tele.dk>...
>Hi
>
>I am DBA (not a real DBA, just a programmer with some DB experience) on a
>developer site where we use a development tool which uses Oracle "in a
>hidden way" meaning that we dont have access to entities such as tables and
>indexes but just an object hierarchy.
>
>I have found out that the development tool some times uses SQL searches for
>which it hasnt build indexes for and thus performs a table scan. So I have
>made it my task to identify the sql constructs which causes table scans and
>get the proper indexes created.
>
>I have been told that I can enable logging for all connections on the
>server, but does this explicitly identify a SQL search as having performed
a
>tablescan or is there a better way ?? My ideal tool would track all
>tablescans and generate the SQL necessary to generate the indexes. I know
>that in general, a skilled DBA would consider such a random index creation
>dangerous due to the extra workload on updates/creations, but I am sure
that
>we would gain an enormous performance benefit in our case.
>
>Any comments to this problem would be appreciated !!
>
>Thanks in advance
>--
>
>
>
>Sincerely yours
>
>Dalby Data
>Sneppevej 15, st. th.
>2400 Copenhagen NV
>
>Telephone +45 40 96 00 89
>Telefax +45 31 86 09 20
>
>Mail: dalby_data_at_post3.tele.dk
>Site: http://home3.inet.tele.dk/dalbydat
>
>
>
Received on Sun May 30 1999 - 14:43:18 CDT