Database software giant Oracle Corp. made a profit of $2.58 billion in the quarter ended November, up from a profit of $2.19 billion a year earlier in the equivalent period. Redwood City-based Oracle (NASDAQ: ORCL) had higher revenue, too -- $9.09 billion in the second quarter vs. $8.79 billion in the same quarter a year earlier. Software revenue rose year-over-year in the second quarter, hitting $6.65 billion. But revenue from hardware systems fell from $1.58 billion a year ago in the second quarter…