Unix Sort - Alternatives

Hi All,

I want to sort a flat file which will contain millions of records [each line a record, fields seperated by delimiters] based on a key/field. For this I want to use unix sort command and before that I want to make sure that unix sort command has any file size limitations. And also please let me know whether I have to change any configuration details in unix to handle such a large files. If its not possible to sort such large files in unix , pls mention alternatives to unix sort command.

Thanks in advance

Please post only in one forum - this is a duplicate.