Copy command-Out of memory error

Hi, 

 I am trying to copy a 13G file to postgres db using the 'copy from' command on PGSQL 8.4. After loading 8 million records I got the below error .

ERROR: out of memory

DETAIL: Cannot enlarge string buffer containing 1073726116 bytes by 65536 more bytes.

CONTEXT: COPY teststorage, line 8479575

  In my table I do not have foreign keys or triggers. I simply want to load the file to database. I was able to use the copy from command with 10000 records , jus to make sure it works.

please advice