Crs-1726 Process Failed To Run In Real-time Priority Jun 2026

This article was written for Oracle database administrators, Linux system engineers, and clusterware specialists troubleshooting the CRS-1726 error in production environments.

systemctl show oracle-ohos.service | grep RTPriority crs-1726 process failed to run in real-time priority

If you choose to ignore this error, you may experience: This article was written for Oracle database administrators,

su - grid ulimit -r

If this fails with Operation not permitted , it’s an OS-level issue. Oracle processes need CAP_SYS_NICE to raise their scheduling

Modern Linux kernels use capabilities instead of full root privileges. Oracle processes need CAP_SYS_NICE to raise their scheduling priority.

This is not a syntax or configuration error within Oracle itself. Instead, it is an . When Oracle Clusterware spawns an agent process, it requests real-time scheduling to reduce context switching and ensure predictable response times. If the OS denies this request—due to permissions, limits, or kernel settings—Oracle logs CRS-1726.