[postgis-users] out of memory

[Mahavir Trivedi]

  hi i  split the  image (tiff) into 100 X 100 tile .(RASTER IMAGE 500 MB
input )
 but problem occurred when i export  it then output size increase.

(image input size = 1591 X 1446)
(image output size = 1600 X 1450)


can i change blocksize of server ? if yes then how ?
my system XP Windows 64-bit 4 GB RAM

thanks
mahavir
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