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Status Future consideration
Workspace Db2
Created by Guest
Created on May 20, 2021

A DB cfg parameter to set the default tablespace to prevent objects ending up in the wrong TS

When not explicitly set in the CREATE TABLE statement, a newly created table will end up in the last created tablespace.

A lot of customers have problems with this for several reasons.

  • They have no control over table placement when using a framework or application.

  • Several customers have not a dedicated DBA or enough knowledge so people are not aware of this construction until problems arise.

  • Some customers are not even aware of this effect.

  • If you create a tablespace for a certain use case, everybody else is impacted by this change if their DDL script is not explicitly mentioning the tablespace to be used.

  • Especially in MPP environments I have seen multiple cases of tables ending up in a tablespace only present on the head node while it should have been on all nodes.

So this issue creates a lot of rework if detected too late and possibly outages as well because of data skew (see last bullet).

Needed By Quarter
Needed by Date Jul 31, 2021