On 2005-11-03, Peter Eisentraut <[EMAIL PROTECTED]> wrote: > Peter Eisentraut wrote: >> Someone wanted to rename a database while someone else was running a >> rather long pg_dump, so the rename had to wait, and everyone else had >> to wait for the rename because no new connections would be allowed. > > As an auxiliary issue, why do the new connections have to wait in this > case? The rename waits for the AccessShareLock of the dump to be > released, but meanwhile new connections should be able to get > AccessShareLocks of their own.
No. New AccessShare locks block behind the pending AccessExclusive lock. Otherwise AccessShare locks could starve the exclusive lock forever. -- Andrew, Supernews http://www.supernews.com - individual and corporate NNTP services ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
