I do loads of labs & after upgrading a cloned instance of EBS R12 (12.2) database 19c (19.14) to 19.16 & started noticing the error “ORA-00800: soft external error, arguments: [Set Priority Failed], [VKTM], [Check traces and OS configuration]” being logged. I tried to figure out what went wrong after the upgrade & after referring dozens of blog posts and Oracle documents, couldn’t fix this error.

Then, I configured this VM for Oracle ORDS & broke the system by applying few updates that overwritten few mandatory packages for Oracle EBS, forcing me to wipe the system and fresh installation of Oracle Linux 7.9

After applying the prerequisites, I brought up the cloned instance once again & decided to go by the book. After the database clone, I didn’t forget to apply “root.sh” from $ORACLE_HOME/bin folder as “root” this time.

If you are ever coming across this error, please ensure the folder/file accesses ($ORACLE_HOME/bin) are like the images below. Running “root.sh” fixes much of these access rights.

“oradism“

“extjob” & “jssu“

This should mostly address the VKTM related issues. If not, please proceed with further measures. If interested refer these documents/posts.

https://asanga-pradeep.blogspot.com/2021/07/ora-00800-soft-external-error-arguments.html

ORA-00800: Soft External Error, Arguments: [Set Priority Failed], [VKTM] [Check traces and OS configuration] (Doc ID 2551359.1)

Hope this helps few out there! Merry Christmas and a Happy New Year in advance!