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Status Not under consideration
Workspace IBM i
Categories Db2 for i
Created by Guest
Created on Oct 7, 2019

Change the default of CRTPF parameter SIZE

We are on 7.2, going to 7.3 soon.

The default for CRTPF is SIZE(10000 1000 3). This means only 13000 records are required before escape message CPA5305 is issued.

The default can be changed using CHGCMDDFT, but it's set back to the original IBM setting when the o/s is upgraded.

We run many queries that recreate output files. Many output files are larger than 13000 records, so we get many CPA5305 messages in the QSYSOPR message queue.

We have a reply list entry for CPA5305 that responds with 9999, but this can sometimes take several seconds to respond.

So instead of all this extra processing, would IBM consider changing the SIZE parameter of CRTPF to some larger value?

Perhaps users should be asked what they would like to see this value set to?

Note that SQL tables are set to *NOMAX rows by the SQL statement CREATE TABLE.


If IBM are reluctant to change the SIZE default of CRTPF because of the unknown consequences, perhaps consider a new system value "QPFDFTSIZE". This would be shipped with the current default of the SIZE parameter of CRTPF - SIZE(10000 1000 3) - and the new default value of the SIZE parameter of CRTPF would now be set to *SYSDFT. As I understand it, system values are kept between o/s upgrades.

Use Case:

Queries that create output files can slowed down by the reply list entry processing.

Many CPA5305 messages in QSYSOPR makes it more difficult to see important messages.

Idea priority Medium
  • Guest
    May 29, 2020

    IBM does not intend to provide a solution to this request at this time, so it is being closed. The database team has a long list of higher priority requirements, so this request is not likely to be implemented anytime soon.

    We recommend creating a program to run after installing changes to return the command defaults to your preferred settings.

  • Guest
    Dec 30, 2019

    Due to processing by IBM, this request was reassigned to have the following updated attributes:
    Brand - Servers and Systems Software
    Product family - Power Systems
    Product - IBM i
    Component - Db2 for i
    Operating system - IBM i
    Source - None

    For recording keeping, the previous attributes were:
    Brand - Servers and Systems Software
    Product family - Power Systems
    Product - IBM i
    Component - Core OS
    Operating system - IBM i
    Source - None

  • Guest
    Oct 8, 2019

    Most shops have a program that's run after an OS upgrade. Just create one and adjust the command defaults as you see fit.

    Or as others pointed out just use SQL to create tables. It's about time more customers switched to this method anyway.

  • Guest
    Oct 8, 2019

    Or just use SQL to create tables.

  • Guest
    Oct 8, 2019

    Create a program which changes CMD-defaults. After system-change or installing PTFs you can run this program.