mind@xxxxx ("Mindaugas") writes: >> >> Even a database-wide vacuum does not take locks on more than one >> >> table. The table locks are acquired and released one by one, as >> >> the operation proceeds. >> >> > Has that changed recently? I have always seen "vacuumdb" or SQL >> > "VACUUM" (without table specifications) running as one long >> > transaction which doesn't release the locks that it is granted >> > until the end of the transaction. >> >> You sure? It's not supposed to, and watching a database-wide >> vacuum with "select * from pg_locks" doesn't look to me like it >> ever has locks on more than one table (plus the table's indexes and >> toast table). > > Are there some plans to remove vacuum altogether? I don't see that on the TODO list... http://www.postgresql.org/docs/faqs.TODO.html To the contrary, there is a whole section on what functionality to *ADD* to VACUUM. -- let name="cbbrowne" and tld="acm.org" in String.concat "@" [name;tld];; http://www.ntlug.org/~cbbrowne/finances.html "There are two types of hackers working on Linux: those who can spell, and those who can't. There is a constant, pitched battle between the two camps." --Russ Nelson (Linux Kernel Summary, Ver. 1.1.75 -> 1.1.76)