467,887 Members | 1,603 Online
Bytes | Developer Community
New Post

Home Posts Topics Members FAQ

Post your question to a community of 467,887 developers. It's quick & easy.

Insert v/s Load

We have Batch program which insert around 1 million rows in a partitioned table.

A suggestion has been given to write the records to a file and then load them to the table using IBMLOAD or BMC LOAD.

What is general guideline in such cases where application is processing large volume of data and inserting in the DB2 table ?
Mass Inserts with Restart Capability or Loads using file compromising on Restartability ?

How will the decision get affected if the same database is concurrently being accessed by Business Objects as well ?
Jul 27 '07 #1
  • viewed: 1969
Share:
2 Replies
I think the answer depends a bit on how large the million rows insert activity compares to the number of rows in the table already. If it's a relatively small percentage, and you have adequate freespace, the nthe inserts should perform acceptably. Be careful to commit on a regular basis, though.
It might also depend on whether the rows would normally be spread throughout the table or added at the end. A load utility would add the rows at the end, possibly compromising clustering. If you do decide to use a load utility, you should also backup the table as soon as possible.
If you concern leans toward concurrency, I would opt for inserting the rows with an appropriate commit frequency. After all, a million rows is not really a large number any more.
Good luck.
Jul 27 '07 #2
docdiesel
Expert 100+
Load has its pro's and contra's, but when filling an empty table or replacing its whole content I prefer the load method. If you have to add data to an existing table, you could load the data into a 2nd table of same construct in a frist step, and after that append it to the destination table loading it by cursor.

Nevertheless, you shouldn't forget to do a backup.
Aug 15 '07 #3

Post your reply

Sign in to post your reply or Sign up for a free account.

Similar topics

2 posts views Thread by David Sharp | last post: by
2 posts views Thread by php newbie | last post: by
14 posts views Thread by Demetris | last post: by
1 post views Thread by dba123 | last post: by
1 post views Thread by peteh | last post: by
2 posts views Thread by Arun Srinivasan | last post: by
reply views Thread by MrMoon | last post: by
By using this site, you agree to our Privacy Policy and Terms of Use.