In future please use plain text for query output, not screenshots
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Mariel> When I searched for the biggest objects in DB1 I saw that the
Mariel> total sum isnt even close to 100G :
You should probably check whether there are files in the db's directory
that do not correspond to the filenode of any table (use
select pg_relation_filenode(oid) from pg_class; to get a list of
filenodes)
and If i'll find some, is it safe just to delete them ?
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Crashes (or other unclean shutdown) in the middle of doing a vacuum full
or other table-rewriting operation is known to leave orphaned files
around in the data dir.
Mariel> Now, I thought that the pg_total_relation_size should include
Mariel> also all the dead tuples and the toasted tables.
It does, and your results agree with that. Perhaps you missed that
pg_table_size() includes the toast table too?
Yeah, that is exactly what I missed, thanks ;)
Mariel> In addition, I saw from pg_stat_activity that the session table
Mariel> has about 198 dead tuples and the toasted table has about 83833
Mariel> dead tuples. It seems that the autoanalyze has never run on the
Mariel> toasted table.
There's nothing in a toast table that needs analyzing.
Why not ? So when you analyze a table it will analyze also the pg_toast ? For example you would want to know how many records there are in that toast..
--
Andrew (irc:RhodiumToad)
