1. Cloud Control Database Lifecycle Management Administrator's Guide
  2. Appendixes
  3. Checking Host Readiness Before Provisioning or Patching
  4. Environment Settings
  5. Kernel Requirements

Kernel Requirements

Enter the commands displayed in the following table to view the current values of the kernel parameters. Make a note of the current values and identify any values that you must change. To change any of the existing values, you will have to add or edit the variable values in the /etc/sysctl.conf file.

Note:

To change the current kernel parameters, run the following command with root user privileges:

/sbin/sysctl -p

Parameter Command

semmsl, semmns, semopm, and semmni

# /sbin/sysctl -a | grep sem

This command displays the value of the semaphore parameters in the order listed.

shmall, shmmax, and shmmni

# /sbin/sysctl -a | grep shm

This command displays the details of the shared memory segment sizes.

file-max

# /sbin/sysctl -a | grep file-max

This command displays the maximum number of file handles.

ip_local_port_range

# /sbin/sysctl -a | grep ip_local_port_range

This command displays a range of port numbers.

rmem_default

# /sbin/sysctl -a | grep rmem_default

rmem_max

# /sbin/sysctl -a | grep rmem_max

wmem_default

# /sbin/sysctl -a | grep wmem_default

wmem_max

# /sbin/sysctl -a | grep wmem_max

Note:

For more information about the Kernel requirements, see the Oracle Database Installation Guide available in the following location: http://www.oracle.com/pls/db112/portal.portal_db?selected=11&frame=#linux_installation_guides