java - How to perform read and write operations on 20GB excel file on server? -


i having few excel files on server , want perform read , write operations on them.

there 2 ways can think of :

  1. use apache poi , perform needful task (i doubt on approach came across lot of outofmemory issues on stackoverflow people struggling load > 250mb file)

  2. treat each excel files database , use jdbc|odbc perform read , write operations. (this approach better 1st 1 doesn't load whole file on memory)

sample operations :

  • searching string
  • search , replace

please let me know if have done before or if have idea.

edit: file format either xls or xlsx, not csv file guys !!!


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