What page size do you use? Do you have a lot of blobs? If so what is the average size of those blobs? Mark
----- Bericht beantwoorden ----- Van: "Małgorzata Barchańska go...@fastdata.com.pl [firebird-support]" <firebird-support@yahoogroups.com> Aan: <firebird-support@yahoogroups.com> Onderwerp: [firebird-support] What makes a database file size so big? Datum: di, mrt. 29, 2016 11:44 Hi, I use firebird 2.5 classic server on windows operating system. Because our database file is quite big (18GB) and it starts to cause (because of its size) some maintenance inconvenience we decided to try to shrink it. After checking database statistics we deleted "useless" records in tables that took the most space, we updated old useless blob fields with null values. After backup and restore it turned out that new database is only 3GB smaller than original. We checked the statistics and according to results we have 2,3GB raw data in database file. Restore only metadata creates database of 70MB size, restoring without active indexes results with file 500MB smaller than original. I'm very curious - so what makes our database file so big? Sum of clear metadata and raw data is about 2,4GB, and what with other 12GB? Is anything we can do to shrink our big database file (drop useless indexes or something like that)? Thank you in advance for your answer. Best regards, Małgorzata Barchańska -- Pozdrawiam Małgorzata Barchańska Fast Data Sp. z o.o. Aleja Zwycięstwa 96/98, 81-451 Gdynia Tel.: (58) 732 72 01 http://www.fastdata.com.pl/ NIP : 5862214954,REGON : 220595046 KRS : 0000304310, Kapitał zakładowy 50 000 zł ------------------------------------ Posted by: =?UTF-8?Q?Ma=c5=82gorzata_Barcha=c5=84ska?= <go...@fastdata.com.pl> ------------------------------------ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Visit http://www.firebirdsql.org and click the Documentation item on the main (top) menu. Try FAQ and other links from the left-side menu there. Also search the knowledgebases at http://www.ibphoenix.com/resources/documents/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ------------------------------------ Yahoo Groups Links https://info.yahoo.com/legal/us/yahoo/utos/terms/
