Bergen Brunswig Corp. posted an 11% gain in earnings for its second quarter ended Feb. 28, to $11.4 million from $10.3 million for the year-earlier quarter. Revenue rose 12% to $970.4 million from $867.1 million. For the first half, earnings climbed 30% to $23.4 million from $18.1 million. Revenue increased 14% to $1.9 billion from $1.7 billion. Bergen Brunswig, based in Orange, is a health services and consumer electronics distribution company.