dbTalk Databases Forums  

direct writes

comp.databases.ibm-db2 comp.databases.ibm-db2


Discuss direct writes in the comp.databases.ibm-db2 forum.



Reply
 
Thread Tools Display Modes
  #1  
Old   
john.enevoldson (AT) pulsen (DOT) se
 
Posts: n/a

Default direct writes - 05-18-2006 , 01:29 AM






Hi,
When running a job that inserts data into a particular table we are
seeing a significant number of direct writes against the tablespace
containing the table. This is the only
table in the tablespace and there are no other jobs running against the
table at the same time. The table contains no lobs or long varchar
columns so we cannot understand what is causing the direct writes.
Anyone any ideas ?
Regards,
John.


Reply With Quote
  #2  
Old   
Pierre Saint-Jacques
 
Posts: n/a

Default Re: direct writes - 05-18-2006 , 12:37 PM






Just off the top of my head, aren't log writes counted as direct writes.
Direct writes, AFAIR are all writes that are non buffered, meaning thru the
buffer pools.
Inserts would have to be logged an cause log writes. If the logbufsz is
small, you could cause a lot of direct writes.
HTH, Pierre.

--
Pierre Saint-Jacques
SES Consultants Inc.
514-737-4515
<john.enevoldson (AT) pulsen (DOT) se> a écrit dans le message de news:
1147933758.213791.61480 (AT) y43g200...oglegroups.com...
Quote:
Hi,
When running a job that inserts data into a particular table we are
seeing a significant number of direct writes against the tablespace
containing the table. This is the only
table in the tablespace and there are no other jobs running against the
table at the same time. The table contains no lobs or long varchar
columns so we cannot understand what is causing the direct writes.
Anyone any ideas ?
Regards,
John.



Reply With Quote
  #3  
Old   
rAinDeEr
 
Posts: n/a

Default Re: direct writes - 05-22-2006 , 07:53 AM



Hi John,

How can we find the writes while inserting Data in a table ?

Regards
RaInDeeR


Reply With Quote
  #4  
Old   
UDBDBA
 
Posts: n/a

Default Re: direct writes - 05-22-2006 , 12:17 PM



What kind of job are you running that does inserts? can you please
provide details?
Vijay


Reply With Quote
Reply




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off



Powered by vBulletin Version 3.5.3
Copyright ©2000 - 2012, Jelsoft Enterprises Ltd.