LMS Processes Not Running In Real Time Mode

(Doc ID 1310164.1)

Last updated on OCTOBER 12, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.1 and later
Information in this document applies to any platform.

Symptoms

o RAC database

o oradism executable has setuid/setgid bit enabled and is owned by root:

$ ls -l oradism
-rwsr-sr-x 1 root dba 15871 Jun 13 10:32 oradism


o LMS processes of the RAC instances not running in realtime (should be Class RR  instead of TS):

$ ps -o user,pid,cls,priority,cmd -e|grep -v grep |egrep '^USER|lms'
USER       PID CLS PRI CMD
oracle   25301  TS  16 ora_lms0_RAC1
oracle   25305  TS  16 ora_lms1_RAC1


o explicitly setting hidden database parameter '_os_sched_high_priority' to 1 (which is also the default) does not make any difference either

Cause

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