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Query running very slow [message #636105] Thu, 16 April 2015 19:09 Go to next message
zkdba
Messages: 1
Registered: April 2015
Junior Member
I received this complain that database is running slow, I checked database response is good.
But this particular developer complaining, anyway ran explain plain for his query below are the results, I don't know how to read this plan Embarassed , please need input from experts.
please see attached file, here reading was not possible.
Than You

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Re: Query running very slow [message #636106 is a reply to message #636105] Thu, 16 April 2015 19:26 Go to previous messageGo to next message
BlackSwan
Messages: 26766
Registered: January 2009
Location: SoCal
Senior Member
welcome to this forum

Please read and follow the forum guidelines, to enable us to help you:

http://www.orafaq.com/forum/t/88153/0/ and read http://www.orafaq.com/forum/t/174502/

We need a few more details.
http://www.orafaq.com/forum/mv/msg/84315/433888/#msg_433888

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Re: Query running very slow [message #636119 is a reply to message #636105] Fri, 17 April 2015 00:40 Go to previous messageGo to next message
Michel Cadot
Messages: 68733
Registered: March 2007
Location: Saint-Maur, France, https...
Senior Member
Account Moderator

Quote:
I don't know how to read this plan


See yesterday topic: Need to know about some basic for explain plan

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Re: Query running very slow [message #636122 is a reply to message #636105] Fri, 17 April 2015 02:03 Go to previous messageGo to next message
John Watson
Messages: 8964
Registered: January 2010
Location: Global Village
Senior Member
Why is it not possible to read? You do of course need to show the whole plan, with the predicate section, if you are looking for advice.

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Re: Query running very slow [message #636125 is a reply to message #636122] Fri, 17 April 2015 03:14 Go to previous messageGo to next message
cookiemonster
Messages: 13963
Registered: September 2008
Location: Rainy Manchester
Senior Member
And you should really copy and paste the text of the explain plan in code tags as described here: How to use [code] tags and make your code easier to read?
rather than attaching an image.

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Re: Query running very slow [message #636203 is a reply to message #636125] Sun, 19 April 2015 13:40 Go to previous message
Kevin Meade
Messages: 2103
Registered: December 1999
Location: Connecticut USA
Senior Member
If you are looking for information on how to do SQL Tuning, I refer you to my book on SQL Tuning which can be found on Amazon.

Before you buy the book, here is the free promotional chapter (chapter 1), the book's script file, and a reference document on SQL Tuning. Read the first chapter, and then if you like what you read, go ahead to Amazon and get the book.

In particular, please pay attention to the reference document as it will help you understand what information needs to be provided in order for someone else to help you do some SQL Tuning. If you can get this info, or have someone help you get this info, and then post it here, our team can give you much better advice.

Kevin

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