We investigate the impact of the 766.3 Ty KamLAND spectrum data on the determination of the solar neutrino oscillation parameters .
We show that the observed spectrum distortion in the KamLAND experiment firmly establishes \Delta m _ { 21 } ^ { 2 } to lie in the low-LMA solution region .
The high-LMA solution is excluded at more than 4 \sigma by the global solar neutrino and KamLAND spectrum data .
The maximal solar neutrino mixing is ruled out at 6 \sigma level .
The 3 \sigma allowed region in the \Delta m ^ { 2 } _ { 21 } - \sin ^ { 2 } \theta _ { 12 } plane is found to be remarkably stable with respect to leaving out the data from one of the solar neutrino experiments from the global analysis .
We perform a three flavor neutrino oscillation analysis of the global solar neutrino and KamLAND spectrum data as well .
The 3 \sigma upper limit on \sin ^ { 2 } \theta _ { 13 } is found to be \sin ^ { 2 } \theta _ { 13 } < 0.055 .
We derive predictions for the CC to NC event rate ratio and day-night ( D-N ) asymmetry in the CC event rate , measured in the SNO experiment , and for the suppression of the event rate in the BOREXINO and LowNu experiments .
Prospective high precision measurements of the solar neutrino oscillation parameters are also discussed .