Software giant

Oracle

(ORCL) - Get Report

was dipping slightly after an analyst's report this morning that lowered estimates for its fourth quarter ending May 31. In recent trading, Oracle was off 42 cents, or 2.5%, to $16.64. At times in early trading, shares dropped as much as $2.

Investors have

worried lately that the second-largest software firm would warn for the second consecutive quarter. A note by

Salomon Smith Barney

analyst Gretchen Teagarden Thursday dropped fourth-quarter estimates from 15 cents per share to 13 cents per share. Consensus estimates gathered by

Thomson Financial/First Call

are for the company to earn 15 cents per share.