📖 ~1 min read
Table of contents
Symptom & Impact
oslevel -s differs from oslevel -r after a Service Pack install.
Environment & Reproduction
Partial installp run on AIX 7.2 left some filesets at older level.
Root Cause Analysis
Missing or failed prerequisites prevented committing the SP fully.
Quick Triage
Run oslevel -s and oslevel -rq to compare current vs latest known levels.
Step-by-Step Diagnosis
Use instfix -i | grep ML and lppchk -v to find broken filesets.

Solution – Primary Fix
Re-run installp -agXYd /mnt/sp /software-bundle to finish the SP install.
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Solution – Alternative Approaches
Use update_all on an alt_disk_copy clone instead of the active rootvg.
Verification & Acceptance Criteria
oslevel -s matches the target SP and lppchk -v reports no missing requisites.
Rollback Plan
Boot from the alt_disk_copy clone with bosboot if the update misbehaves.
Prevention & Hardening
Always alt_disk_copy before installp and verify with lppchk -v afterwards.
Related Errors & Cross-Refs
Often pairs with lppchk dependency warnings and broken commit states.
Related tutorial: View the step-by-step tutorial for aix-7.1.
View all aix-7.1 tutorials on the Tutorials Hub →
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
IBM Docs: installp, oslevel, lppchk, alt_disk_install.
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