"This is a good wicket and hope it's a good batting track," Lakmal said at the toss on Friday.
Sri Lanka, who won the first test in Galle by 278 runs within three days, made one change with offspinner Akila Dananjaya replacing left-arm wrist spinner Lakshan Sandakan.
South Africa bolstered their batting by bringing in Theunis de Bruyn for spinner Tabraiz Shamsi, while Lungi Ngidi replaced fellow paceman Vernon Philander.
"We have worked on a few plans and we want to fix it in this match," South Africa captain Faf du Plessis said.
"This ground in the past has sometimes assisted pace and bounce. Hopefully we get the same.
"In test cricket, batting is all about application. You don't rock up and score a 100 off 50 balls. Once again, you've to be positive against spin and trust your defence a little more."
Teams:South Africa: Dean Elgar, Aiden Markram, Hashim Amla, Temba Bavuma, Faf du Plessis (captain), Quinton de Kock (wicketkeeper), Theunis de Bruyn, Keshav Maharaj, Kagiso Rabada, Dale Steyn, Lungi Ngidi
Sri Lanka: Dimuth Karunaratne, Danushka Gunathilaka, Dhananjaya de Silva, Kusal Mendis, Angelo Mathews, Roshen Silva, Niroshan Dickwella (wicketkeeper), Dilruwan Perera, Suranga Lakmal (captain), Rangana Herath, Akila Dananjaya.
(Reporting by Amlan Chakraborty in New Delhi; editing by Greg Stutchbury)
