IBM AIX 7.2 – Common Problem 127 – Diagnosis and Fix

📖 ~1 min read

Table of contents

1. Symptom & Impact
2. Environment & Reproduction
3. Root Cause Analysis
4. Quick Triage
5. Step-by-Step Diagnosis
6. Solution – Primary Fix
7. Solution – Alternative Approaches
8. Verification & Acceptance Criteria
9. Rollback Plan
10. Prevention & Hardening
11. Related Errors & Cross-Refs
12. References & Further Reading

Symptom & Impact

`nim -o bos_inst` aborts with `0042-001 lpp_source and SPOT do not match TL`.

Environment & Reproduction

AIX 7.2 NIM master serving clients after a partial TL update of `lpp_source`.

Root Cause Analysis

SPOT was not rebuilt after `nim -o update_all` populated a new TL into lpp_source.

Quick Triage

Compare `lsnim -l ` Rstate and `oslevel -s` of the SPOT mksysb.

Step-by-Step Diagnosis

Run `nim -o check ` and `nim -o check ` and inspect `/var/adm/ras/nim.log`.

Solution – Primary Fix

Rebuild the SPOT: `nim -Fo check ` then `nim -o update_all -a lpp_source= `.

Solution – Alternative Approaches

Allocate a fresh SPOT created with `nim -o define -t spot -a source=`.

Verification & Acceptance Criteria

`lsnim -l ` shows `Rstate = ready for use` and client install proceeds past stage 2.

Rollback Plan

Re-allocate the previous SPOT via `nim -o reset` and remove the new SPOT definition.

Prevention & Hardening

Always run `nim -o check` after `update_all` and pin a known-good lpp_source per TL.

Related Errors & Cross-Refs

Pairs with `0042-207`, `0042-175` SPOT errors and stuck `bos_inst` clients.

Related tutorial: View the step-by-step tutorial for aix-7.2.

View all aix-7.2 tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

IBM Docs: NIM Operations Guide, `lsnim`, AIX TL update workflow.