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3641298 - RHEL: 'kernel.sem' is overridden after applying "sap-hana" profile

Symptom

  • "sap-hana" profile is activated. 

  • Verification of the active profile using the command 'tuned-adm verify' fails, indicating a mismatch in kernel semaphore ('kernel.sem') parameter values.

  • Expected 'kernel.sem` values: '32000 1024000000 500 32000'.

  • Current 'kernel.sem` values: `250 32000 32 4096'.

  • Error message in file '/var/log/tuned/tuned.log':

    2025-08-21 12:58:31,839 INFO     tuned.plugins.plugin_sysctl: reapplying system sysctl
    2025-08-21 12:58:31,842 INFO     tuned.plugins.plugin_sysctl: Overriding sysctl parameter 'kernel.sem' from '32000 1024000000 500 32000' to '250 32000 32 4096'
    2025-08-21 12:58:32,129 INFO     tuned.daemon.daemon: static tuning from profile 'sap-hana' applied
    2025-08-21 12:58:55,887 INFO     tuned.daemon.daemon: verifying profile(s): sap-hana
    2025-08-21 12:58:55,921 ERROR    tuned.plugins.base: verify: failed: 'kernel.sem' = '250 32000 32 4096', expected '32000 1024000000 500 32000


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Environment

  • Red Hat Enterprise Linux
  • SAP HANA database

Keywords

SAP HANA, kernel.sem, semaphore, RHEL, sysctl.conf, overriding, expected, failed , KBA , BC-OP-LNX-RH , Red Hat Linux , Problem

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