George Wilk wrote: > According to the WAL config documentation correctly, checkpoints are created > every > <mk:@MSITStore:C:\Program%20Files\PostgreSQL\8.2\pgAdmin%20III\docs\en_US\pg > admin3.chm::/pg/runtime-config-wal.html#guc-checkpoint-segments> > checkpoint_segments log segments, or every > <mk:@MSITStore:C:\Program%20Files\PostgreSQL\8.2\pgAdmin%20III\docs\en_US\pg > admin3.chm::/pg/runtime-config-wal.html#guc-checkpoint-timeout> > checkpoint_timeout seconds, whichever comes first. However, it seems as > though setting my checkpoint_timeout has no effect on checkpoint creation ( > I have it set to 30 seconds). Forcing checkpoint by running psql -c > CHECKPOINT mydb doesn't do the trick either. Checkpoints are created solely > based on the checkpoint_segments logs reaching their configured size. You are misunderstand what a checkpoint is. Also, why would you need a checkpoint every 30 seconds escapes me. What you probably want is to archive the WAL segment currently in use. There's a function you can use for that, pg_switch_xlog(). -- Alvaro Herrera Valdivia, Chile ICBM: S 39º 49' 18.1", W 73º 13' 56.4" "In Europe they call me Niklaus Wirth; in the US they call me Nickel's worth. That's because in Europe they call me by name, and in the US by value!"
