Re: [ADSM-L] Query performance issue

Thank you very much, Richard. This query is much faster and gives the same 
result from data point of view.
I have only question about period of time from 00:00:00 till 00:02:59.
Is this query correct for mentioned period of time?

Grigori G. Solonovitch


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Richard Sims
Sent: Monday, August 22, 2011 2:30 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Query performance issue

Working with timestamps can be onerous.  One sometimes has to be wily to 
compensate for processing time.  Try:

select msgno, severity, message, originator, nodename, ownername, schedname, \
      domainname, servername, sessid, session, process, date_time \
 from actlog \
  where DATE(DATE_TIME)=CURRENT_DATE and date_time >(current_timestamp - 3 
minutes)

Add Order By if you want.

   Richard Sims

On Aug 22, 2011, at 3:08 AM, Grigori Solonovitch wrote:

> Thank you very much Erwann, but it does not help. There is no visible 
> improvement.
>
> Grigori G. Solonovitch
>
>
> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf 
> Of Erwann SIMON
> Sent: Sunday, August 21, 2011 4:20 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: [ADSM-L] Query performance issue
>
> Hi Grigori,
>
> Try to first add a clause that limit the scope of the search to avoid
> calculation on the entire actlog table, something like "... where
> date(current_timestamp)=current_date and
> cast((current_timestamp-date_time)minutes as decimal)<3 ..."
>
> Best regards / Cordialement / مع تحياتي
> Erwann SIMON
>
>
> Le 21/08/2011 12:38, Grigori Solonovitch a écrit :
>> TSM Client 6.2.3.0&  TSM Server 5.5.5.
>>
>> Is there any way to speed up next request?
>>
>> select msgno, severity, message, originator, nodename, ownername, schedname,
>>            domainname, servername, sessid, session, process, date_time as 
>> date_time
>>   from actlog
>>      where cast((current_timestamp-date_time)minutes as decimal)<3
>>         ORDER BY date_time DESC
>>
>> Thank you very much in advance.
>>
>> Grigori G. Solonovitch


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