- Original Message -
From: Stefano Bonnin [EMAIL PROTECTED]
To: Josh Berkus [EMAIL PROTECTED]
Sent: Monday, August 30, 2004 4:13 PM
Subject: Re: [PERFORM] Query performance issue with 8.0.0beta1
This is my postgres.conf, I have changed only the work_mem and
shared_buffers parameters.
From: Michael Ryan S. Puncia [EMAIL PROTECTED]
I am sorry that my question is out of line with this
group(performance) but I need
-general might be more appropriate
an urgent help :-( .pls .. I need to know how to change the length of the
column.
add a new column, use update
Server HP: Intel(R) Pentium(R) 4 CPU 2.26GHz
RAM 1GB
OS: RedHat 8
And the disk:
kernel: megaide: driver version 05.04f (Date: Nov 11, 2002; 18:15 EST)
kernel: megaide: bios version 02.06.07221605
kernel: megaide: LD 0 RAID1 status=ONLINE sectors=156297343
capacity=76317 MB drives=2
On Wednesday 01 Sep 2004 3:36 pm, G u i d o B a r o s i o wrote:
Dear all,
I am currently experiencing troubles with the performance of my
critical's database.
The problem is the time that the postgres takes to perform/return a
query. For example, trying the \d tablename command takes
The solution appeared as something I didn't know
On the .conf file
Previous situation:
#log_something=false
log_something=true
Worst situation
#log_something=false
#log_something=true
Nice situation
log_something=false
#log_something=true
Ok, the problem was that I assumed that
G u i d o B a r o s i o wrote:
Conclusion:
If you comment a line on the conf file, and reload it, will remain in
the last state. (either wast true or false, while I expected a
default)
Yes, that's correct. No, you're not the only one to have been caught out
by this.
--
Richard Huxton
This issue was resently discussed on hackers. It is a known issue, not very
convinient for the user. Nevertheless it is not fixed in 8.0, but will
perhaps be addressed in the next major release.
(Remembering, it was a non-trivial thing to change.)
Best Regards,
Michael Paesold
G u i d o B a r o
Thanks for the reply,
Been reading hackers of Aug 2004 and found the threads. It's a common habit to
create two lines on the configuration files, in order to maintain the copy of the
default conf file. I guess this should be the worst scenery for a freshly incoming DBA
trying to put things
Michael,
I am sorry that my question is out of line with this
group(performance) but I need
an urgent help :-( .pls .. I need to know how to change the length of the
column.
In the future, try to provide more detail on your problem.Fortunately, I
think I know what it is.
On Mon, 30 Aug 2004, Martin Sarsale wrote:
Multicolumn indexes can only be used if the clauses involving the
indexed columns are joined with AND. For instance,
SELECT name FROM test2 WHERE major = constant OR minor = constant;
You can use DeMorgan's Theorem to transform an OR clause to
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