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 Employees should enter Ideas at

Status Functionality already exists
Workspace Db2
Components Compression
Created by Guest
Created on Jul 18, 2021

Automatically detect and uncompress NX842 compressed files in LOGPATH, OVERFLOWLOGPATH, etc.

Sometimes when after databases using a redirected restore from an online backup or db2inidb from a flash copy we are requested to copy log files from source directly into the target LOGPATH or OVERFLOWLOGPATH so that a roll forward can successfully complete.

While this works if Archive compression for logarchmeth1 LOGARCHCOMPR1=NO (no compression) and LOGARCHCOMPR1=YES (DB2 compression) this doesn't work with LOGARCHCOMPR1=NX842 as DB2 does not automatically detect and uncompress a NX842 compressed log that is in the LOGPATH.

The NX842 compressed log is usually placed into an LOGARCHMETH1 (or similar) path so that DB2 can copy with uncompress into the LOGPATH. Unfortunately, this does not work when executing a roll forward after a database copy thus the need to copy log files directly into the LOGPATH or an OVERFLOWLOGPATH.

The NX842 logs must then be sent to IBM DB2 Support so that they can execute a utility to uncompress the needed logs.

This requested idea would be to enhance DB2 to be able to detect an NX842 compressed log file where ever stored (LOGPATH, OVERFLOWLOGPATH, etc.) and automatically uncompress them as needed in the same manner that it currently does for DB2 compressed logs.

Needed By Quarter
  • Admin
    Michael Roecken
    Jul 21, 2021

    In Db2 Version 11.5.4 and onwards this functionality exists to automatically detect and un-compress ANY compressed log file in any log path managed by Db2.