Australia's Daniel Gale also carded an impressive 66 on Friday, following his first-round 68, to occupy joint sixth place, six under and five shots off the lead.Â
Schneider started the day two clear of the chasing pack after Thursday's opening 63 and made a patient start to the second round early in the morning, opening with seven straight pars before picking up back-to-back birdies on the eighth and ninth to turn in 33.
And the German made further gains on the 14th and 18th to set the clubhouse target at 11 under par.
None of the later starters were able to catch the 35-year-old at the top, with countryman Nicolai von Dellingshausen his nearest challenger on nine under par.
England's Callum Tarren was alone in third another shot further back after carding seven birdies and no bogeys in his 63.
New Zealand's Daniel Hillier finished with an eagle on the 18th to sit alongside South African Jayden Schaper on seven under.
Schneider got his first birdie of the day courtesy of a 22ft putt at the eighth before holing from long range from just off the ninth green for a second successive gain.
A confidence-boosting par save from around six feet followed on the 10th before Schneider picked up his next birdie with a 20-footer on the par-three 14th.
Schneider finished off his round with a close-range birdie on the 18th to remain on course for a maiden win at this level.
He said: "My plan was to continue what I did yesterday, and that worked out well.
"I have to say, off the tee I wasn't as strong as yesterday. But I managed well on the holes where I missed the fairways to come out with par, so I didn't drop a shot. Overall, super happy."
Danny List, who bounced back from a first-round 71 to post a 66, joined Gale in making the cut but fellow Australians David Micheluzzi and Jason Scrivener both fell short.
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