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IDS Forum

Re: performance between dbload and external table

Posted By: Madison Pruet
Date: Tuesday, 22 March 2016, at 8:43 p.m.

In Response To: performance between dbload and external table (CHUAN LU)

One additional though.

If you were to make the table a normal table then it would work with HDR, but would take longer.

But couldn't you

1) Create the new table with a different name while the old table still existed. The table would be logged, so that it would work with HDR. The application would continue to use the existing table. It might take longer to load but the apps would still be active. Let's say that the table name is mytab and the table being loaded is named mytab_new.

Once the table mytab_is loaded then ...

2) Bring down the application...
3) Drop the table mytab4) RENAME table mytab_new to mytab5) Bring up the application....

While it might take longer to load, the down time for the application would be just for the drop table and the rename table. I'd think that would only take a few seconds, and since HDR would still be fully functional.

Madison Pruet
Retired and Loving it

On Tuesday, March 22, 2016 7:27 PM, Madison Pruet <madison_pruet@yahoo.com> wrote:

#yiv8384245961 blockquote, #yiv8384245961 div.yiv8384245961yahoo_quoted {margin-left:0 !important;border-left:1px #715FFA solid !important;padding-left:1ex !important;background-color:white;} Did you read my response about converting between HDR and RSS?

Sent from Yahoo Mail for iPad

On Tuesday, March 22, 2016, 6:58 PM, CHUAN LU <luchuan@cn.ibm.com> wrote:
HI,
If I split the data file into multiple files. I use below method to load the
data into a single table in HDR environment.
1) using external table;
2) open multiple session to run dbload,one dbload session read one data file.
Do anybody know which one has more good performance?
thanks for your time.

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