How can i solve product export error

问题

I have try to export my all products, but only minimum of products only exported, whole product not exported, which means 100's of products successfully imported, and my whole products not exported, in my store 30,000 products,

i have tried both export :

Errors : system - import/export - export error:

http://i.stack.imgur.com/C5y2X.png

system - import/export - dataflow profiles - export all products error: (500 internal server error)

http://i.imgur.com/PkRsHxQ.png

来源：https://stackoverflow.com/questions/38581050/how-can-i-solve-product-export-error