17.00 - Setting Parameters for Shared Memory - Teradata Tools and Utilities

Teradata® Tools and Utilities for Linux Installation Guide Amazon Linux 2, CentOS, OEL, RedHat, SLES, Ubuntu

prodname
Teradata Tools and Utilities
vrm_release
17.00
created_date
June 2020
category
Installation
featnum
B035-3160-220K
The Teradata Parallel Transporter Base installation checks the values of the shared memory parameters for the required minimum values. If the value for a shared memory parameter is less than the minimum value, the installation recommends increasing the value to the minimum value.

The shmmni parameter determines the system-wide limit on the number of shared memory segments that can be created.

The shmmax parameter determines the maximum size of a shared memory segment. The minimum value is 4194304.

  1. Log on as the root user.
  2. Check the value of the shmmni parameter; the minimum value is 200:
    /sbin/sysctl kernel.shmmni
  3. Add the following line in the /etc/rc.d/rc.local file to increase the shmmni parameter value to 200:
    echo 200 > /proc/sys/kernel/shmmni
  4. To shut down the system in one minute, type:
    /sbin/shutdown -r +1