Under his leadership the team got promoted to the Austrian Bundesliga and won the National Cup in the first year and the National Supercup in the second. In the season 2002/2003 Schachner trained Austria Wien in Austrian Bundesliga until he was replaced by Christoph Daum in early October despite an excellent start of the season. At the time of his dismissal the team lead the championship with seven points ahead of second place and just defeated Ukrainian Champions Shakhtar Donetsk 5:2 in the UEFA Cup. A few days after his dismissal he was hired by Grazer AK, which held the penultimate place in the Austrian Bundesliga. The team finished the season in second place behind Austria Vienna. In the season 2003/2004 Schachner led Grazer AK to win their first and so far the only national champions title. In the same season they also won the Austrian Cup. In season 2004/2005 the Grazer AK were runners-up in the Bundesliga and faced Liverpool of Rafael Benitez, the future winners of the title, in the third qualification round of Champions League, managing to win the return leg at Anfield 1:0, after the home defeat of 0:2. In January 2006 he was sacked by the club, officially to reduce costs, in real because he was in talks with several other clubs. He moved to TSV 1860 München who were in the 2nd Bundesliga at the time and avoided relegation only in the penultimate round. The club was going through difficult period in those years and faced economic problems. On 9 March 2007, he and TSV 1860 München agreed to terminate his contract at the end of the 2006–2007 season on 30 June. His successor was Marco Kurz. Schachner signed a new contract at SK Austria Kärnten in April 2007. He did not achieve the desired results with the newly formed team and was fired by the management in December of that year. In August 2008, Schachner replaced the coach of VfB Admira Wacker Mödling (Austrian First League), Heinz Peischl, who was fired for acquiring only 1 point in 5 games which left the team on the bottom of the ranking. With Schachner the team finished the season in the third place. Moreover, after 13 years Admira Wacker reached the National Cup final where they were defeated by Austria Wien 1:3. He remained as a coach in VfB Admira Wacker Mödling for the season 2009/10 before being replaced by their youth team coach on 26 April 2010, leaving the team in third place with 4 points behind the leader, struggling for promotion 6 rounds before the end of the season.