Portal | Manuals | References | Downloads | Info | Programs | JCLs | Mainframe wiki | Quick Ref
IBM Mainframe Computers Forums Index
 
Register
 
IBM Mainframe Computers Forums Index Mainframe: Search IBM Mainframe Forum: FAQ Memberlist Profile Log in to check your private messages Log in
 
Repartitioning Big Table Space.

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

New User


Joined: 31 Aug 2005
Posts: 82

PostPosted: Tue Dec 28, 2010 2:44 pm    Post subject: Repartitioning Big Table Space.
Reply with quote

Hi,

We have large partition table space ( 100 Part ) with 3 none-partition indexes and 1 billion records.

We repartitioned part 99-100 of this table space on production which took long time especially in unload and build phases.

I don't know why the unload phase of reorg takes time more than unload utility from whole table space?

Please let me know how can I reduce the reorg time?

Please note that our DB2 Version is 7.

The job we are using for reorganize the table space after alter is as follows :

REORG TABLESPACE xxBANCS.TSXXX PART 69:100 LOG NO
COPYDDN(SYSCOPY)

Please advise.

Best regards
Manshadi
Back to top
View user's profile Send private message

dick scherrer

Site Director


Joined: 23 Nov 2006
Posts: 19270
Location: Inside the Matrix

PostPosted: Tue Dec 28, 2010 8:50 pm    Post subject:
Reply with quote

Hello,

Quote:
Please let me know how can I reduce the reorg time?

Please note that our DB2 Version is 7.
Unfortunately, this may also be the answer to your question.

What business reason is there to remain on an unsupported version of database when so much depends on this (the database environment). . . icon_confused.gif
Back to top
View user's profile Send private message
sushanth bobby

Senior Member


Joined: 29 Jul 2008
Posts: 1013
Location: India

PostPosted: Tue Dec 28, 2010 9:13 pm    Post subject:
Reply with quote

Manshadi,

Quote:
I don't know why the unload phase of reorg takes time more than unload utility from whole table space?


Because in the unload phase, REORG sorts data if clustering index exists. If data is already in perfect clustering order specify SORTDATA NO.

Sushanth
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 Update table without cursor Ron Klop DB2 3 Wed Oct 11, 2017 1:06 pm
No new posts Table(Unicode(Graphic) table) loading... muralikrishnan_new DB2 0 Thu Oct 05, 2017 5:10 pm
No new posts The TS7720 is out of cache space. Rex Montemayor All Other Mainframe Topics 2 Mon Sep 25, 2017 7:18 am
No new posts Insert a Row_number into table useit DB2 2 Tue Sep 19, 2017 1:07 pm
No new posts how to see when the last read access ... Mike 1304 DB2 1 Tue Sep 12, 2017 7:52 pm

Facebook
Back to Top
 
Job Vacancies | Forum Rules | Bookmarks | Subscriptions | FAQ | Polls | Contact Us