Portal | Manuals | References | Downloads | Info | Programs | JCLs | Master the Mainframes
IBM Mainframe Computers Forums Index
 
Register
 
IBM Mainframe Computers Forums Index Mainframe: Search IBM Mainframe Forum: FAQ Memberlist Usergroups Profile Log in to check your private messages Log in
 

 

Db2 - Join

 
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> DB2
View previous topic :: :: View next topic  
Author Message
pranav08

New User


Joined: 05 Sep 2010
Posts: 10
Location: noida

PostPosted: Fri Nov 19, 2010 6:33 pm    Post subject: Db2 - Join
Reply with quote

I have a query that uses a join, it's running pretty slow. Please suggest how I can improve the performance. Is there any way to find out the cost and CPU time needed of the query?
Back to top
View user's profile Send private message

PeterHolland

Global Moderator


Joined: 27 Oct 2009
Posts: 2435
Location: Netherlands, Amstelveen

PostPosted: Fri Nov 19, 2010 6:36 pm    Post subject:
Reply with quote

http://publib.boulder.ibm.com/infocenter/dzichelp/v2r2/index.jsp?topic=/com.ibm.db29.doc.perf/db2z_db2simplifiesjoins.htm
Back to top
View user's profile Send private message
bhairon singh rathore

New User


Joined: 19 Jun 2008
Posts: 91
Location: banglore

PostPosted: Fri Nov 19, 2010 9:16 pm    Post subject:
Reply with quote

There are many tools in market to help you out with CPU time for individual Query of program

For checking why your SQL running slow, Please EXPLAIN in spufi
For more information on EXPLAIN please google icon_lol.gif
Back to top
View user's profile Send private message
View previous topic :: :: View next topic  
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> DB2 All times are GMT + 6 Hours
Page 1 of 1

 

Search our Forum:

Similar Topics
Topic Author Forum Replies Posted
No new posts Reduce CPU Times for Join Sort santoshn SYNCSORT 12 Sat Jun 10, 2017 1:40 pm
No new posts Join giving more records than expected Danielle.Filteau SYNCSORT 2 Thu Mar 09, 2017 3:28 am
No new posts Join of more than one table dibyendumandal11111 DB2 6 Mon Feb 13, 2017 11:36 pm
No new posts Join in SQL Query vickey_dw DB2 2 Tue Jan 17, 2017 12:15 am
No new posts How can we have the varying lenth of ... Gunapala CN DFSORT/ICETOOL 6 Fri Oct 14, 2016 7:31 pm


Facebook
Back to Top
 
Mainframe Wiki | Forum Rules | Bookmarks | Subscriptions | FAQ | Tutorials | Contact Us