IBM Sustainability Software - Ideas Portal


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Status Future consideration
Workspace IBM MAS - Manage (Base)
Created by Guest
Created on Nov 2, 2021

RELATED IDEAS

Improve Config DB Performance

We have a Maximo database with approximately 5 million workorder records.

CONFIGDB is slow when adding multiple YORN fields to large tables.

In order to improve Config DB Performance the process should group the updates, rather than running individual updates.

For Example, replace this:

update workorder set field1 = 0 where field1 is null;

update workorder set field2 = 0 where field2 is null;

update workorder set field3 = 0 where field3 is null;

update workorder set field4 = 0 where field4 is null;

With this:

update workorder ( set field1 = 0, field2 = 0, field3 = 0, field4 = 0 )

where field1 is null

and field2 is null

and field3 is null

and field4 is null;


  • Post comment
  • Guest
    Reply
    |     Nov 3, 2021

    For SQL Server a default constraint is utilized so the database platform populates it on existing columns and then the constraint is dropped after. Oracle/DB2 syntax is different (you set a default on the column instead of a constraint) but I'd imagine the performance of that would be faster then executing a bulk update. Similarly after you would then need to drop the default.

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