How to Resolve PRVG-12935: The virtual memory manager tunable parameter "vmm_klock_mode" does not have expected "BOOT" value on nodes

Oracle 19c Grid Installation Prerequisite Check - PRVG-12935

PRVG-12935

When performing a pre-installation check of Oracle 19c grid infrastructure, we saw:

PRVG-12935: The virtual memory manager tunable parameter "vmm_klock_mode" does not have expected "BOOT" value on nodes primary01

Let's check current value of vmm_klock_mode.

[root@primary01 /]# vmo -L vmm_klock_mode
NAME                      CUR    DEF    BOOT   MIN    MAX    UNIT           TYPE
     DEPENDENCIES
--------------------------------------------------------------------------------
vmm_klock_mode            2      -1     -1     -1     3      numeric           B
--------------------------------------------------------------------------------

We'd better to change the value to the expected one on both nodes.

[root@primary01 /]# vmo -r -o vmm_klock_mode=2
Setting vmm_klock_mode to 2 in nextboot file
Warning: some changes will take effect only after a bosboot and a reboot
Run bosboot now? yes/no no

You can reboot now or reboot the system later.

Check the value again.

[root@primary01 /]# vmo -L vmm_klock_mode
NAME                      CUR    DEF    BOOT   MIN    MAX    UNIT           TYPE
     DEPENDENCIES
--------------------------------------------------------------------------------
vmm_klock_mode            2      -1     2      -1     3      numeric           B
--------------------------------------------------------------------------------

Go back to Grid OUI, then check the pre-requisite again.

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