Skip to Main Content
IBM Data and AI Ideas Portal for Customers

This portal is to open public enhancement requests against products and services offered by the IBM Data & AI organization. To view all of your ideas submitted to IBM, create and manage groups of Ideas, or create an idea explicitly set to be either visible by all (public) or visible only to you and IBM (private), use the IBM Unified Ideas Portal (

Shape the future of IBM!

We invite you to shape the future of IBM, including product roadmaps, by submitting ideas that matter to you the most. Here's how it works:

Search existing ideas

Start by searching and reviewing ideas and requests to enhance a product or service. Take a look at ideas others have posted, and add a comment, vote, or subscribe to updates on them if they matter to you. If you can't find what you are looking for,

Post your ideas

Post ideas and requests to enhance a product or service. Take a look at ideas others have posted and upvote them if they matter to you,

  1. Post an idea

  2. Upvote ideas that matter most to you

  3. Get feedback from the IBM team to refine your idea

Specific links you will want to bookmark for future use

Welcome to the IBM Ideas Portal ( - Use this site to find out additional information and details about the IBM Ideas process and statuses.

IBM Unified Ideas Portal ( - Use this site to view all of your ideas, create new ideas for any IBM product, or search for ideas across all of IBM. - Use this email to suggest enhancements to the Ideas process or request help from IBM for submitting your Ideas.

IBM Data & AI Roadmaps ( - Use this site to view roadmaps for Data & AI products.

IBM Employees should enter Ideas at

Status Not under consideration
Workspace Db2
Components pureScale
Created by Guest
Created on Dec 10, 2018

DB2HOST variable needed for PureScale to redirect and define IP to participating subnet's

In Db2 PureScale GDPC the Db2 cluster is distributed on 2 different physical locations and a Quorum Host (tie breaker node) on a 3rd location.
The general Db2 install routines use the 'system hostname' (gethostbyname) for the ongoing install procedures. For Db2 PureScale the 'system hostname' is also forwarded to different products like Tivoli SA MP (TSAMP) and SpectrumScale (GPFS).
On our environments the network infrastructure is designed to distinguish the different network locations by using different subnets. The 'system hostname' is reflecting an (relatively slow) internal network segment which is not routed to other locations. The host however can be reached by using routed other high performance networks, so called 'service network', by using a 'hostname-p1'.
This network layout makes it impossible to use the TieBreaker for PureScale because DB2 enforces to use the 'system hostname' for communication. This is impossible because in our environment the 'system hostname' reflects the internal/local network, and cannot be used for communications to other plants.
We require a possibility to direct DB2 using a predefined IP -Address/hostname, for example by implementing a 'DB2HOST' registry variable, so that the automatically taken 'system hostname' can be overwritten by explicitely defining a hostname/ip-address which should be used instead, and which is able to communicate to all participating subnets in all participating locations.
Salesforce Ticket: TS001313467
  • Guest
    May 23, 2019

    The issue is resolved by configuring the system to adhere to pureScale prerequisite.