2018年12月20日(木) 21:18 Rijo Roy <rjo_...@yahoo.com>: > > Hi All, > > I am facing an issue with wal recycling in one of my Postgresql servers > running ina rhel box and the PG version is 10. The issue is that wal files > are not recycling at all. Please note that its a qa server and the load is > quite high on it. It is running in no archive mode with fsync on, > max_wal_size is 8GB with checkpoint_timeout of 5mins and default > checkpoint_completion_target of 0.5. Could you please give me some pointers > what could be wrong, if it is hardware that is problem here, how can I > collect some facts about it so that 8 can take this matter with system guys. > Average wal generation is approximately 9k per day > I have enabled log_checkpoint in my server and I can see it says checkpoint > complete: wrote ###buffers, 0 wal files added, 0 removed, 0 recycled,,,, > LogCheckpointEnd > I have no active replication slots in this database cluster.Also the > wal_keep_segments is set to 0. Appreciate your help!
You say you have no *active* replication slots - does that imply you have at least one *inactive* replication slot? If so, that will cause WAL files to be retained indefinitely. Regards Ian Barwick -- Ian Barwick http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services
