1. Don't email people directly to start a new thread (unless you have a support contract with them of course). 2. Not much point in sending to two mailing lists simultaneously. You'll just split your responses. brahma tiwari wrote: > Hi all > > My database server db01 is on linux environment and size of base > folder increasing very fast unexpectedly(creating renamed files of 1 > GB in base folder like 1667234568.10) details as below These are the files containing your tables / indexes. When a file gets larger than 1GB the file gets split and you get .1, .2 etc on the end) > what is significance of these files and how can i avoid it.can i > delete these renamed files from base folder or any thing else. Please > help NEVER delete any files in .../data/base. Since these files all seem to have the same number they are all the same object (table or index). You can see which by looking in pg_class. You'll want to use the number 1662209326 of course. => SELECT relname,relpages,reltuples,relfilenode FROM pg_class WHERE relfilenode=2336591; relname | relpages | reltuples | relfilenode ---------+----------+-----------+------------- outputs | 3 | 220 | 2336591 (1 row) This is the table outputs on mine which occupies 3 pages on disk and has about 220 rows. You can find out the reverse (size of any table by name) with some useful functions: select pg_size_pretty(pg_total_relation_size('my_table_name')); I'm guessing what you've got is a table that's not being vacuumed because you've had a transaction that's been open for weeks. -- Richard Huxton Archonet Ltd -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance