Greg Smith a écrit : > [...] >> - When, or in what case is a new clog file produced? > > Every 32K transactions. Are you sure about this? y clog files get up to 262144 bytes. Which means 1000000 transactions' status: 262144 bytes are 2Mb (mega bits), so if a status is 2 bits, it holds 1M transactions' status). AFAICT, 32K transactions' status are available on a single (8KB) page. Or am I wrong? -- Guillaume. http://www.postgresqlfr.org http://dalibo.com