The former Wimbledon champion returned to competitive action for the first time since last June's first-round defeat at the Stella Artois Championships in London by firing 25 aces.
Ivanisevic underwent surgery on his left shoulder in 2002 and made a brief return
"I've missed tennis but not the training," he said, "I missed playing matches and winning and I really enjoyed myself out on court. My aim from now on is Wimbledon and the Olympics in Athens," he said.
The 32-year-old has said this comeback is his last attempt to get back among the elite in the sport.
"I had an operation and then played just a few games. There was no point in having an operation and then leaving it at that. But I still need to work hard," he said.
Ivanisevic will face third-seeded Spaniard Tommy Robredo in the second round of the 375,000 euros event.