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The cssd is failing to start in 19c due to "CRS-1726: Process failed to run in real-time priority" error (Doc ID 2870136.1)

Last updated on JULY 20, 2022

Applies to:

Oracle Database - Enterprise Edition - Version 19.3.0.0.0 to 19.15.0.0.0 [Release 19]
Linux x86-64

Symptoms

Starting CRS fails because ora.cssd failed to start.

The cluster alert.log show "CRS-1726: Process failed to run in real-time priority" error:

2022-05-10 20:49:02.381 [CSSDMONITOR(67778)]CRS-8500: Oracle Clusterware CSSDMONITOR process is starting with operating system process
ID 67778
2022-05-10 20:49:02.466 [OSYSMOND(67783)]CRS-8500: Oracle Clusterware OSYSMOND process is starting with operating system process ID 67
783
2022-05-10 20:49:02.466 [CSSDMONITOR(67778)]CRS-1726: Process failed to run in real-time priority. Details at (:CLSN00143:) in <GI_BASE>/diag/crs/<node name>/crs/trace/ohasd_cssdmonitor_root.trc.
2022-05-10 20:49:02.870 [CSSDAGENT(67893)]CRS-8500: Oracle Clusterware CSSDAGENT process is starting with operating system process ID
67893
2022-05-10 20:49:02.944 [CSSDAGENT(67893)]CRS-1726: Process failed to run in real-time priority. Details at (:CLSN00143:) in <GI_BASE>/diag/crs/<node name>/crs/trace/ohasd_cssdagent_root.trc.
2022-05-10 20:49:03.424 [OCSSD(68099)]CRS-8500: Oracle Clusterware OCSSD process is starting with operating system process ID 68099
2022-05-10 20:49:04.544 [OCSSD(68099)]CRS-1713: CSSD daemon is started in hub mode
2022-05-10 20:49:04.608 [OCSSD(68099)]CRS-1726: Process failed to run in real-time priority. Details at (:CLSN00143:) in <GI_BASE>/diag/crs/<node name>/crs/trace/ocssd.trc.
2022-05-10 20:49:04.609 [OCSSD(68099)]CRS-1656: The CSS daemon is terminating due to a fatal error; Details at (:CSSSC00011:) in
2022-05-10 20:49:05.610 [OCSSD(68099)]CRS-8503: Oracle Clusterware process OCSSD with operating system process ID 68099 experienced fatal signal or exception code 6.

 

The ocssd.trc file shows the following error:

2022-05-10 20:49:04.608 : CSSD:259406464: [ INFO] (:CLSN00143:)clssscInitGlobalCTX: CSSD process cannot get real-timepriority
2022-05-10 20:49:04.608 : CSSD:259406464: [ INFO] clsssc_logose: slos [-2], SLOS depend-msg [No such file or directory], SLOS error-msg [2]
2022-05-10 20:49:04.608 : CSSD:259406464: [ INFO] clsssc_logose: SLOS other info is [process is not running in real-time. rc = 0].

2022-05-10 20:49:04.608 : CSSD:259406464: [ INFO] (:CLSN00143:)clssscInitGlobalCTX: set priority system call had failed
2022-05-10 20:49:04.609 : CSSD:259406464: [ INFO] (:CLSN00143:)clssscInitGlobalCTX: set priority system call had failed calling clssscExit
2022-05-10 20:49:04.609 : CSSD:259406464: [ INFO] (:CSSSC00011:)clssscExit: A fatal error occurred during initialization

 

Cause

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In this Document
Symptoms
Cause
Solution
References


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