I have heard of quite a few people being put on performance improvement plans. I have had 3 different managers over the past 3 years and none of them did a performance review.
My first manager left the company, my second manager moved into a new role and my 3rd manager is actively interviewing.
My thinking is the pips are the new layoff. If you dont leave and you don't want to leave and you have years of loyal work at Oracle then you might get a massive severance package. The layoff stack at that layer of the reorg cake might be too expensive for executive taste.
So to get rid of the hangers on with big packages you pip them to create a paper trail and fire them with cause. People don't want to talk about it because its embarassing.
We should take the opportunity to discuss it here