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Status Delivered
Workspace Db2 Administration Tool for z/OS
Created by Guest
Created on Jun 12, 2023

RELATED IDEAS

Non-disruptive add column not null with no default

Currently, the conversion of a new NOT NULL column without default at the end of a table is done via an 

UNLOAD / DROP / CREATE / LOAD

A content (default) is generated for the column during the unload in order to be able to load this column afterwards. 
During the conversion, the table is locked for editing and cannot be accessed.

A new NOT NULL column can also be implemented without downtime with the following procedure

ALTER TABLE T1 ADD COL NOT NULL WITH DEFAULT
ALTER TABLE T1 ALTER COL DROP DEFAULT
REORG

This change can be carried out without interruption and ultimately contains the same data content as the Unload/Load procedure.

In order to be able to implement as many changes as possible without interruption, this situation should also be recognised and supported by the IBM Admin Compare Tool.

Needed By Quarter
  • Guest
    Reply
    |     May 28, 2024

    Thank you for providing this much-needed simplification of implementation. We have implemented and successfully tested the PTF in our development system. This saves us a lot of manual conversions and increases the possibility of implementing changes without downtime.

  • Admin
    Chris Pomasl
    Reply
    |     May 20, 2024

    Thank you for submitting this Db2 Administration Tool for z/OS enhancement request. We have reviewed this request and believed it was a good candidate for the Db2 Administration Tool for z/OS product and have implemented it.
    <APAR information>

    PH60828

    We appreciate your input to the Db2 Administration Tool for z/OS development team. We hope that you will continue to submit enhancement suggestions for improvements as customer feedback is a key component to shaping the future direction of Db2 Administration Tool for z/OS.

    Sincerely,

    The Db2 Administration Tool for z/OS Team

  • Admin
    Chris Pomasl
    Reply
    |     Dec 14, 2023

    This request is in planning with a tentative target of 1Q2024

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