For Dolly Parton’s latest tour, the security procedures include not just the usual pat-downs and bag checks at the door, but also two dogs trained to sniff out bombs and firearms wherever the singer performs.

“There are certain artists,” said Steve Martin, Ms. Parton’s longtime agent, “who take security very seriously.”

Precautions like these, once rare, are becoming more common as the concert business adjusts to a new reality in which the threat of violence must be met through heightened security screening.

After the weekend attack at a gay nightclub in Orlando, Fla., additional security procedures like dogs and metal detectors are likely to become more common at events around the country, executives and artists’ representatives say, making the experience of going to a concert more like waiting in line at the airport.