US STOCKS-Futures little changed after two-day rally, Fed awaited
* S&P 500 coming off two-day rally, near record close
* Tech shares in focus following Oracle, Adobe results
* Investors not expecting curve balls in Fed statement
* Futures up: Dow 8 pts, S&P 1.4 pt, Nasdaq 5.5 pts
By Ryan Vlastelica
NEW YORK, March 19 (Reuters) - U.S. stock index futures were little changed on Wednesday as investors paused following a sharp two-day advance, and as they looked ahead to comments from Federal Reserve Chair Janet Yellen.
* Geopolitical concerns remained in view after Ukraine's acting defense minister said the country's forces would not withdraw from Crimea after the region voted to join Russia in a disputed referendum.
* Russian President Vladimir Putin has signed a treaty to make it part of Russia, and while no violence was reported as pro-Russian forces took control of part of a Ukraine naval base, investors are concerned that tensions in the region could escalate.
* Technology shares will be in view a day after results from both Oracle Corp and Adobe Systems Inc. Oracle reported revenue that was below estimates, dashing hopes for a sustained turnaround, though Adobe gave a second-quarter revenue outlook that was ahead of analyst forecasts. Continuación...