In article <44dddf400712061323x5e721da7ped6075f6dc01f7c7@mail.gmail.com>, John Wells <john.wells@greatworx.com> wrote: % I see that BLOCK_SIZE can be set at compile time, but is there a way % to determine what block size is in use in a running system? I've been % searching but have been unsuccessful so far. show block_size; If you try to start the database with a postmaster compiled with the wrong block size, the error message tells you what block size you need. -- Patrick TJ McPhee North York Canada ptjm@interlog.com