The 26-year-old double amputee wept and prayed with brother Carl and sister Aimee as he awaited the magistrate, who confirmed charges of murder, which carries a life sentence, and illegal possession of ammunition.
Reeva Steenkamp -- a blonde cover girl and law graduate who would have turned 30 on Monday -- died in the bathroom of Pistorius's upmarket Pretoria home in the early hours of February 14.
She was shot in the head, elbow and hip.
The athlete known as "Blade Runner", who is currently out on bail, has admitted to killing her but denied murder, saying he shot Steenkamp through a locked bathroom door because he believed she was an intruder.
Prosecutors will argue he is guilty of pre-meditated murder.
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"The accused armed himself with his nine-millimetre pistol and through the locked door, fired four shots at the deceased. The deceased was wounded and died on the scene," the charge sheet said.
File photo of Olympian sprinter Oscar Pistorius posing next to his girlfriend Reeva Steenkamp at Melrose Arch in Johannesburg. (AFP Photo)
Magistrate Desmond Nair said the trial would start at the High Court on March 3 and run until March 20.
Monday's hearing lasted only a few minutes, as lawyers had already agreed to start the trial next year amid backlogs in the South African courts.
Pistorius appeared in the dock wearing a black suit and light blue shirt, occasionally wiping his nose and breathing heavily.
Friends of Steenkamp were also present, dressed in black.
"Ironically the 19th of August 2013 would have been Reeva's 30th birthday, a day that should have been a celebration of her life," their spokesman Ian Levitt said afterwards.
"Instead it will now mark a court appearance related to her untimely passing six months ago," he added as three of Steenkamp's friends wept behind him.
The Pistorius family said they did not immediately wish to comment.
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Local media had said Pistorius may also be charged with gun offences as the state tries to cast him as aggressive and trigger-happy.
However, no other charges were listed on the indictment.
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'Scream, then gunshots, then more screaming'
The document showed 107 witnesses, including many of Pistorius's neighbours.
"Some of the state witnesses heard a woman scream, followed by moments of silence, then heard gunshots and then more screaming," it said.
Pistorius's ex-girlfriend Samantha Taylor is also expected to testify.
Pistorius allegedly once fired a gun through the sunroof of Taylor's car, and earlier this year reportedly discharged a gun by accident at a Johannesburg restaurant.
A single senior judge will hear the case as South Africa does not have a jury system.
Key aspects of the police investigation into Steenkamp's death came under scrutiny during the lengthy bail hearing.
Ballistics reports from the bathroom door suggest Pistorius was on his stumps when the shooting took place, South Africa's Sunday Times reported.
Prosecutors earlier said he donned his two prosthetic legs before firing four shots through the door, a delay they thought would prove the murder was planned.
The athlete, who earned his nickname for the fibreglass prostheses he uses in competition, was born without calf bones and had both legs amputated below the knee when he was 11 months old.
He catapulted to fame at last year's London Olympics as the first double-amputee to compete against able-bodied athletes.
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But the killing sent shock waves around the world and since then his reckless past and love of fast cars, beautiful women and guns has emerged in the media.
The case halted his participation in athletic events and ended lucrative endorsement deals with US sportswear giant Nike and French cosmetic firm Clarins.
Now South Africa's much-maligned police force is under immense pressure to help secure a conviction, after the bail hearing showed up shoddy police work that led to the whole investigation team being replaced.
Police failed to find all the bullets fired, potentially contaminated the crime scene and misjudged the distance to the house from which a witness claimed to have heard shouting earlier in the night.
Pistorius was released on bail of one million rand ($99,000, 74,000 euros) a week after killing Steenkamp.
Her parents, initially silent, later lashed out at him, speaking of quarrels their daughter had with the athlete in their five-month relationship.
South Africa's Olympic sprinter Oscar Pistorius (C) leaves the Boshkop police statio in Pretoria East, to be taken into police custody on charge of murdering his model girlfriend Reeva Steenkamp. (AFP Photo)
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