I have
multi tables with over 10,000, 000 rows, the biggest one is 70, 000, 000 rows.
For each table, there are several indexes, almost all columns are varchar2. In
my experiences, with many indexes on large table, data insertion will be a pain.
In my case, I have 30, 000 rows to be
Hi,
I always have questions on sql tunning, here is the one:
gtld_analysis=# \d gtld_owner
Table gtld_owner
Attribute| Type | Modifier
++
owner_name | character varying(100) |
netblock_start
!!!
Anna Zhang
-Original Message-
From: Zhang, Anna [mailto:[EMAIL PROTECTED]]
Sent: Thursday, March 14, 2002 3:34 PM
To: '[EMAIL PROTECTED]'
Subject: [ADMIN] seq scan on indexed column
Hi,
I always have questions on sql tunning, here is the one:
gtld_analysis=# \d gtld_owner
, Anna
Cc: '[EMAIL PROTECTED]'
Subject: Re: [ADMIN] seq scan on indexed column
On Thu, 14 Mar 2002, Zhang, Anna wrote:
gtld_analysis=# explain SELECT NETBLOCK_START
gtld_analysis-# FROM GTLD_OWNER
gtld_analysis-# WHERE NETBLOCK_START = -2147483648;
You might want to try the same query
Hi,
I got an error when vacuum database, see below:
$vacuumdb xdap
ERROR: RelationBuildTriggers: 2 record(s) not found for rel domain.
I deleted triggers that referenced domain before vacuum, is this the cause?
How can I fix it? or It doesn't bother, It's ok to ignore such error?
Thanks in
Thanks Stephan! your suggestion works. I just wonder that if dropping
triggers caused such problem, this might be a postgres bug.
Anna Zhang
-Original Message-
From: Stephan Szabo [mailto:[EMAIL PROTECTED]]
Sent: Friday, March 08, 2002 1:02 PM
To: Zhang, Anna
Cc: '[EMAIL PROTECTED
Hi,
I created a foreign key constraint on table referral like this:
alter table referral add constraint fk_referral foreign key (handle)
references domain (handle);
create
alter table referral drop constraint fk_referral restrict;
ERROR: ALTER TABLE / DROP CONSTRAINT: fk_referral does not
Hi,
I installed postgres 7.2 to default location. I can't find pgaccess. Does
this utility has to install seperately? or I installed wrong? Someone knows?
For my postgres 7.1.3 database, pgaccess works fine.
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TIP 1:
Hi,
I have a table named Domain that has 14M rows, here is the defination:
xdap_regr=# \d domain
Table domain
Attribute | Type | Modifier
-+---+--
domainhandle| text |not null
domainname | text |not null
parentdomain| text |
Is the estimate above (1.5M rows) reasonable? If so, it's probably
doing the right thing. If not, what version are you using and are
there any very common values that may throw off the estimates; what
does select * from pg_statistic where starelid=(select oid from
pg_class where
Hi,
I just got a new Penguin machine with 2 processors and 2G RAM. After
installed postgres 7.2, I started to modify postgresql.conf to get max
performance. I read Adm Guide and Bruce's article: PostgreSQL Hardware
Performance Tuning, in my understanding, shared_buffers is similar to
Oracle's
try:
$tar xzpf postgresql-7.1.3.tar.gz
Anna Zhang
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, February 05, 2002 12:51 PM
To: [EMAIL PROTECTED]
Subject: [ADMIN] postgresql 7.1.3
Hi,
I have postgresql7.1.2 on system now(sunOs5.6). I downloaded
Hi,
I am running a query on postgres 7.1.3 at Red Hat 7.2 (2 CPUs, 1.5G RAM, 2
drive disk array).
select count(*) from contact a, contact_discard b where a.contacthandle
b.contacthandle;
Table contact has over 9 million rows, contact_diacard has around 259,000
rows, both tables define
it takes only a few
minues.
Thanks!
Anna Zhang
-Original Message-
From: Ross J. Reedstrom [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, January 29, 2002 11:39 AM
To: Zhang, Anna
Cc: [EMAIL PROTECTED]
Subject: Re: [ADMIN] tuning SQL
On Tue, Jan 29, 2002 at 10:57:01AM -0500, Zhang, Anna wrote
see docs: http://www.postgresql.org/idocs/
under Administrator's Guide, section 3.5 Managing Kernel Resources.
Anna Zhang
-Original Message-
From: Tom Lane [mailto:[EMAIL PROTECTED]]
Sent: Thursday, January 24, 2002 9:06 PM
To: Chris Ruprecht
Cc: PostGreSQL Admin Group
Subject: Re:
I think you have experienced data/index block corruption. First drop indexes
(if you have) and recreate them. if only index corrupts, you are lucky, this
will fix your problem. but if this won't work, it means that data block
corrupted, you may need to recovery your database using backup.
Above
You need to increase SHMMAX. For solaris, it's in /etc/system file; Linux:
/etc/sysctl.conf. You should know corresponding file for your system or
check with your SA to figure out.
Anna Zhang
-Original Message-
From: Chris Ruprecht [mailto:[EMAIL PROTECTED]]
Sent: Thursday, January 24,
Hi All,
I like to know how to timing a process? like in oracle sqlplus, we can set
timing on, then execute a statement, such way we can know how long the
process takes. In psql, is there such feature?
Anna Zhang
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TIP 4:
I have a problem to load data to postgres database using copy command. The
problem is that we have one column called address which is multi-line text,
the taxt file looks like this:
aab770|awkc.com administration|sultan 23
Bogota, na0|CO
above shows one record with '|' as delimiters. Column
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