Re: Thoughts on comments
- From: Andy Klock <andy@xxxxxxxxxxxxxxx>
- To: mwf@xxxxxxxx
- Date: Fri, 22 Mar 2013 10:23:24 -0400
On Fri, Mar 22, 2013 at 10:14 AM, Mark W. Farnham <mwf@xxxxxxxx> wrote:
> Hmm. Kevlar makes an excellent point. Learning mode on: I think I'm
> revising
> my notion they should flow from the data model to the database. Okay, IF
> you're going to have comments in the database you'll need to make sure it
> is
> a situation that cannot snowball into a performance problem (See Kevlar
> post), AND, they should come from the data model if you're going to have
> them.
>
I was hoping that Kellyn was going to mention her case for comments. I've
always been a fan of comments, but was briefly deterred when she described
them being an issue in some cases. Apart from additional space, I thought
they were benign.
As for a side benefit, I've been known to use table comments (on versions
prior to 11g where dbms_shared_pool.purge doesn't exist) when I have to
invalidate a cursor to force a new hard parse. If you are on a database
with a comment "fast=true", that might very well have been me.
Andy
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