** 

Thanks again,

 

I must ask to our DBA for these details.

 

Regards.

 

-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:[EMAIL PROTECTED] On Behalf Of Joe DeSouza
Sent: 26 August 2008 21:46
To: [email protected]
Subject: Re: system table actlink_set and performance

 

Hey Brian

 

You got a good point there..

 

There is a good chance for statistics to be locked if the database has
been restored out of a dmp. From my experience when importing a database
from a dmp, it imports the database with all its tables locked, so dbms
statistics procs will fail over the tables owned by the ARADMIN schema..

 

It would be a good idea to analyze the tables to estimate statistics for
all the ARADMIN owned tables and if this fails becauase the tables are
locked, unlock them by unlocking the entire ARADMIN schema and then
estimate the statistics..

 

Joe

 

 

----- Original Message ----
From: Brian Goralczyk <[EMAIL PROTECTED]>
To: [email protected]
Sent: Tuesday, August 26, 2008 3:16:40 PM
Subject: Re: system table actlink_set and performance

** 

Joe,

 

I agree with you regarding the size and efficiency of the table,
however, if the statistics on the database are not being updated the
indexes will be out of date and the system will still do a table scan.
I would check to see how often the database statistics are updated, or
if they have been updated recently.

 

That would be the first stop for me.

 

Brian Goralczyk

2008/8/26 Joe DeSouza <[EMAIL PROTECTED]>

** 

ACTLINK_SET is an internal meta data table, that the AR System uses to
store information of all the Set Fields actions from all Active Links..

 

Considering that nearly 70% to 80% or even more Active Links from most
systems contain set field actions, this table is expected to be pretty
large..

 

This table is already appropriately indexed for use by Remedy to avoid
any table scans when the system is reading information from this table
at the time of building its cache, and there is not much you can do
about further improving performance as basically whenever there is a
search to this table, the search is against a significantly larger table
than most of your other data tables.

 

This search however would happen only during system startup, when the
system is reading all the definitions to build up its cache, and at the
time there is a recache of definitions when there are changes in the
active links. It shouldn't significantly impact end users
non-development users. So even if there was a way to bring down your 4
seconds to something lower, you aren't really going to achieve much..

 

Joe

 

 

----- Original Message ----
From: BROTONS Oscar <[EMAIL PROTECTED]>
To: [email protected]
Sent: Tuesday, August 26, 2008 9:26:56 AM
Subject: system table actlink_set and performance

** 

Hi all,

I'm trying to improve the performance on our environment and in api-sql
logs analized with arwklga.exe I get that the worst query I've doing is
SELECT actlink_set, with an average of 4,24 seconds. I found this
unacceptable because is not my workflow but remedy who runs that. 

Have someone an idea about what could be happening?

Thanks a lot.

Oscar Brotons.

IT Consultant.

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for the attention and use of the 
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you are reminded that the 
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distribute, copy, print or rely on this 
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