On 2018-Dec-20, Devendra Yadav wrote: > Dear All, > > The stats file in *pg_stat_tmp *are getting corrupted. Even earlier the > files in *pg_stat* got corrupted. They show ?? ?? when you list the files > in folder. Also we can see them in the error log. > it says " *could not open statistics file 'pg_stat_tml/db_0.tmp': to > 'pg_stat_tmp/db_0.stat': Input/output error".* You have problems related to the disk or operating system. This is not PostgreSQL's fault. See `dmesg` or whatever OS diagnostics you have. I suggest never to transcribe error messages manually. Copy & paste instead. When transcribing you're likely to make mistakes that obscure important details. > After doing e2fsck (file system scan ) it is fixed but that needs downtime > and also it removes the file. What is the impact if the file is being > removed ? Deleting those files will lose some statistical counters, but it's not critical data; you're advised to run ANALYZE on all databases after making the disk work properly again. -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
