PostgreSQL: PANIC: heap2_redo: unknown op code 32
http://www.postgresql.org/docs/9.3/static/release-9-3-3.html


  Fixing this required changing the WAL record format for tuple
  freezing. While this is no issue for standalone servers, when using
  replication it means that standby servers must be upgraded to 9.3.3 or
  later before their masters are. An older standby will be unable to
  interpret freeze records generated by a newer master, and will fail
  with a PANIC message. (In such a case, upgrading the standby should be
  sufficient to let it resume execution.)