issue:
ORA-00800: soft external error, arguments: [Set Priority Failed], [VKTM], [Check traces and OS configuration], [Check Oracle document and MOS notes], [] error reported on oracle database 64 bit 19.16.0.0
Root cause:
looks like oradism (file located under cd $ORACLE_HOME/bin) permission issue.
Solution:
1) check if the below parameter set to _highest_priority_processes=VKTM in DB level ,if not set
alter system set _highest_priority_processes=VKTM scope=spfile;
2) check cd $ORACLE_HOME/bin oradism and make sure it has Sticky bit set,if not set the sticky bit and reboot the DB.
cd $ORACLE_HOME/bin ls -lrt oradism (see the sticky bit)
-rwxr-x--- 1 oracle oinstall 147848 Apr 17 2019 oradism >>>>>>>>>>>>>>>>>> wrong one
-rwsr-x--- 1 root oinstall 147848 Apr 17 2019 oradism >>>>>>>>>>>>>>>>>>>> Correct one
