Re: [ADMIN] dropping constraints

2010-09-01 Thread Kevin Kempter
] > Kevin Kempter writes: > > we have a few not null constraints we want to drop on very large tables. > > Unfortunately the drop's are taking hours. Is there a way to drop a not > > null constraint via the system catalogs? > > Dropping a NOT NULL constraint is a trivial operation. The problem is

Re: [ADMIN] dropping constraints

2010-09-01 Thread Tom Lane
Kevin Kempter writes: > we have a few not null constraints we want to drop on very large tables. > Unfortunately the drop's are taking hours. Is there a way to drop a not null > constraint via the system catalogs? Dropping a NOT NULL constraint is a trivial operation. The problem is probably t

[ADMIN] dropping constraints

2010-09-01 Thread Kevin Kempter
Hi All; we have a few not null constraints we want to drop on very large tables. Unfortunately the drop's are taking hours. Is there a way to drop a not null constraint via the system catalogs? Thanks in advance -- Sent via pgsql-admin mailing list (pgsql-admin@postgresql.org) To make changes

Re: [ADMIN] Invalid page header

2010-09-01 Thread Tom Lane
Ireneusz Pluta writes: > - when playing with pg_filedump I noticed that last pages of the table > are always initially reported as damaged, as they come, then, as newer > pages get allocated and filled, these initially bad pages "become > valid", as in the following example repeating the same p

[ADMIN] Invalid page header

2010-09-01 Thread Ireneusz Pluta
Hello, I have a server, 8.4.3, where I get intermittent and rather rare cases of "invalid page headers". Quick search over the pg lists shows a general advice to "check your hardware". Yes, I need to schedule a downtime and perform some checks. However, let me also share with you what I noti

[ADMIN] pgAgent on Windows

2010-09-01 Thread Josi Perez (3T Systems)
Hi, I can't to put the pgAgent service using parameter postgres to (Windows username) and (database username) without to use the password parameter inside the connection string (hostaddr=127.0.0.1 dbname=postgres user=postgres password=ourPassword). If I put Windows user and postgres to database

[ADMIN] Query Optimization with Partitioned Tables

2010-09-01 Thread Kong Mansatiansin
I recently shrunk over 90% of two huge tables on our production database by partitioning 3-month recent data into 3 separate partitions each and got rid of the rest of the data. Despite the smaller sizes, our queries now run slower. The following complex query/view with 8 joined tables, especiall

Re: [ADMIN] Confused by 'timing' results

2010-09-01 Thread Willy-Bas Loos
>> time echo '\timing \\select * from  table1 where id = 123;' | psql >> In the above query. the 'timing' will time the database time and >> the 'time' command at the very start will time the complete time >> for the query including network time. > > No, the 'timing' will say how long it took to se