Brazil's coach is confident his team will do well against Portugal.
Parreira fielded Adriano and Ricardo Oliveira together in a training session between the first team and the reserves.
Brazil's coach will go with experience in the South American qualifying competition for the 2006 World Cup.
The 57 year-old coach, who led Brazil to a fourth World Cup title in 1994, will be in charge of the team till the 2006 World Cup in Germany.
Brazilian Carlos Alberto Parreira has been appointed South Africa coach for the 2010 World Cup finals, resuming a job he left 18 months ago, the country's football association announced on Friday.
Parreira, who led a disappointing Brazil side that went out in the quarter-finals against France, said teamwork had prevailed rather than individuals.
'In Brazil when the national team loses the coach is to blame so I believe we will follow this script once again,' said Parreira.
Ronaldinho and coach Carlos Alberto Parreira took the brunt of the criticism for Brazil's loss to France
Pitso Mosimane signed a four-year contract on Thursday to be South Africa's new coach, tasked with ensuring the 2010 World Cup hosts qualify for the next edition in Brazil.
South Africa's all-time leading scorer Benni McCarthy was one of five players cut from the World Cup hosts' squad on Tuesday as coach Carlos Alberto Parreira settled on his 23 players for the June 11-July tournament. The decision to ditch McCarthy was a major surprise but follows criticism concerning the forward's fitness. Parreira also dropped defender Bryce Moon and goalkeeper Rowen Fernandez in two other surprise cuts.
Winning the World Cup for a sixth time matters more to Brazil than putting on a display of the "beautiful game", Brazil technical director Carlos Alberto Parreira said on Friday.
Brazil coach Carlos Alberto Parreira is satisfied with Ronaldo's recovery from a thigh injury
Diego Forlan shot to the top of the World Cup scorers' chart with two goals in Uruguay's 3-0 win over South Africa on Wednesday.
Ronaldo's early strike against Bolivia turned an expected war of attrition into an comfortable stroll, said coach Carlos Alberto Parreira.
Ronaldo took his new girlfriend to watch him training with Brazil on Tuesday while coach Carlos Alberto Parreira thanked her for helping the Real Madrid forward lose weight.
The Barcelona forward's comeback could see Brazil attack with the "three Rs" in the World Cup qualifier against Ecuador.\n\n
Former captain and coach Dunga hailed the appointment of Luiz Felipe Scolari as coach saying he will take Brazil to great success.
Brazil midfielder Kaka said he was not fully fit in the 1-0 quarter-final defeat to France at the World Cup.
Brazil coach Carlos Alberto Parreira paid tribute to Croatia's stubborn performance as the holders got their World Cup campaign off to a winning start.
Brazil coach Carlos Alberto Parreira believes hosts Germany rather than his own team are favourites to win the World Cup.
"I think Germany and Italy are just as much favourites as we are," said the Brazil coach.
Ronaldo has been recalled by Brazil for this month's match against France which coach Carlos Alberto Parreira has described as the "game of the year".
The last time Brazil played Ireland, in a friendly on the same ground in 1987, they lost 1-0.
Luiz Felipe Scolari took over as the coach of 2014 World Cup hosts Brazil on Thursday, returning for a second stint to lead his country's bid to win a sixth world title on home soil in little more than 18 months' time.
There is only one team in the world which can rest high profile players and still win.
However, there is still no place for strikers Ronaldo and Adriano, both heavily criticised for their performances at the World Cup, former captain Cafu or goalkeeper Dida.
Brazil continued their dominance over England with a 1-0 friendly win on Saturday but 2010 World Cup hosts South Africa's troubles persisted with a 0-0 draw at home to Japan on coach Carlos Alberto Parreira's second debut. Spain added to Diego Maradona's worries by beating his Argentina side 2-1 thanks to two Xabi Alonso goals, including a late penalty, as the teams already qualified for South Africa began their preparations.
A survey showed 27 percent of those polled thought Ronaldo is the team's best player. Kaka followed with 14 percent and Ronaldinho with 12.
Midfielder Edmilson has not played for Brazil since he suffered right knee ligament damage playing for Barcelona and underwent surgery a year ago.