We've been using FPC for a while now and it seems to be doing the trick, we've just had this error start appearing with regards to the fpc log cron.

Next Zend_Db_Statement_Exception: SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '5524522' for key 'PRIMARY', query was: INSERT INTO m_fpc_log

Has anyone had this issue before? Should I just truncate this table?

1 Answer 1


For some reason it's trying to create another entry with the same ID which must be unique.

If you delete this entry only, it should be working fine.

  • If I do a search in the table for 5524522 nothing is found, I have noticed that the next AI is 5524522 though... it seems strange.
    – WebDevB
    Commented Mar 15, 2018 at 15:18
  • truncate the table. I am sure it is there somewhere, but as it's a log it can be truncated.
    – Greg
    Commented Mar 15, 2018 at 15:23

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