Well the obvious answers are "it depends" and "how far away is the actual presentation"? For Hotsos 2014 I had the vast majority of the work done in early December 2013 ... not bad for a presentation not delivered until March 3 2014.
That was after a couple of series of revisions and after all this was based on a presentation originally done at Oracle Open World 2011.
It makes even an experienced and grumpy old Oracle professional more than a little nervous delivering something at Hotsos however. After another series of changes and improvements in January I put it away for a while. Just back at it again about 10 days ago. I sent in Hotsos "yet another" final version but is it actually the final version ... heck no!
Last week on Wednesday I delivered a dry run of the presentation to several of my co-workers along with a couple of NEOOUG fellow board members. Big thanks to Pete Dinin from Sherwin Williams for some great suggestions and comments. He was typing away during the run ... I thought he was doing work related email ... but no ... comments and suggestions on the presentation. So Pete as always I owe you!
Two more weekends before I actually do the presentation. Going to alternate days when I do not look at it at all and other days when I run through the material and the slides.
Working on some dry DBA humor to get some laughs ... wish me luck!