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Application is running slow time to time [message #656041] Wed, 21 September 2016 06:16 Go to next message
dbabertrand
Messages: 1
Registered: September 2016
Junior Member
Hello guys,
I have a very strange situation. One of the application job is running very slow time to time. Even when I switch from one disk group to the other.
I have the awr reports when the results are good and bad. Can someone able to help?
Re: Application is running slow time to time [message #656042 is a reply to message #656041] Wed, 21 September 2016 06:18 Go to previous messageGo to next message
BlackSwan
Messages: 25859
Registered: January 2009
Location: SoCal
Senior Member
Welcome to this forum

Please read and follow the forum guidelines, to enable us to help you:
OraFAQ Forum Guide
How to use {code} tags and make your code easier to read

ORAFAQ tuning below -
Since NOBODY can optimize SQL just by looking at it, we need a few more details.
http://www.orafaq.com/forum/mv/msg/84315/433888/#msg_433888
Please refer to URL above & be sure to provide the details requested:
1) ddl for all tables & indexes
2) EXPLAIN PLAN
3) output from SQL_TRACE & tkprof


Re: Application is running slow time to time [message #656043 is a reply to message #656041] Wed, 21 September 2016 06:32 Go to previous messageGo to next message
John Watson
Messages: 7265
Registered: January 2010
Location: Global Village
Senior Member
Quote:
Can someone able to help?
Possibly - if you provide the AWR reports.
Re: Application is running slow time to time [message #656044 is a reply to message #656043] Wed, 21 September 2016 06:35 Go to previous messageGo to next message
BlackSwan
Messages: 25859
Registered: January 2009
Location: SoCal
Senior Member
>One of the application job is running very slow time to time.
Does SQL use bind variables?
Re: Application is running slow time to time [message #656121 is a reply to message #656041] Fri, 23 September 2016 08:39 Go to previous message
bpeasland
Messages: 51
Registered: February 2015
Location: United States
Member

If you have an AWR report from the period when performance is good, and another from when performance is bad, then look at them side by side to see which areas are being negatively impacted the most. That's probably the best place to start. You might want to pay close attention to the areas of the report that detail the Top N SQL statements. During worse performance, is there a SQL statement or two that seem to be acting differently?

Cheers,
Brian
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