ODA HA: Use OAKCLI RECONFIGURE OSPARAMS to Calculate, Update and Set Kernel / Memory Values Including Hugepages
(Doc ID 2220254.1)
Last updated on APRIL 15, 2019
Applies to:Oracle Database Appliance X6-2 HA Hardware - Version All Versions to All Versions [Release All Releases]
Oracle Database Appliance X5-2 - Version All Versions to All Versions [Release All Releases]
Oracle Database Appliance X4-2 - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.
ODA, ODA HA, ODA X6-2 , ODA X7-2, ODAVP, Hugepages, OS kernel parameters,
One challenge with the ODA is calculating the correct OS / Kernel values for memory:
Specific use cases include:
- New memory added to an existing ODA System (DIMMs)
- Calculating HugePages based on current and changing usage
- Generic memory optimization based on current and changing usage
This note describes the steps to set Kernel parameters
The sizing of OSparams and Huge pages is based on the LINUX + Physical memory available. OS parameter sizing is not unique to hardware type.
This note includes references to the OAKCLI RECONFIGURE OSPARAMS which is part of the OAKCLI command line structure and stack.
There are many newer HW versions of the ODA which do not use OAK but use the new DCS stack which include ODACLI and ODAADMCLI commands plus the new UI Console.
While many of the newer X6-2* and X7-2* as well as 18.3 Bare Metal versions of the ODA no longer use OAKCLI, the manual OS parameter settings and guidelines can still be used.
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