Re: RAC install on Linux

We use HugePages for our databases, but not for ASM. There is a choice to be made through since HugePages are not compatible with automatic memory management (AMM or the use of the memory_target) parameter. We use automatic shared memory management for our databases, meaning we need to manage SGA and PGA. We use AMM for the ASM instances though.

If you are using Huge Pages then you either need to work out how big all your SGAs will be and allocated enough to cover it, or more likely decide how much of the server RAM to allocate for Oracle SGA use.

On Wed, Feb 21, 2018 at 2:22 AM, Orlando L <oralrnr_at_gmail.com> wrote:

>
> Thanks Jared. The manual says disable Transparent Huge Pages but use
> standard HugePages for enhanced performance: https://docs.orac
> le.com/database/121/UNXAR/appi_vlm.htm#UNXAR428
>
> Is that a setting listers use? If so, any warnings or due diligence work?
> Thanks again.
>
>
>
> On Sat, Feb 17, 2018 at 7:59 PM, Jared Still <jkstill_at_gmail.com> wrote:
>
>> Sorry, should have said already disabled on oracle linux, both 6 and 7
>>
>> sent from my mobile, so expert typos
>>
>> On Feb 17, 2018 5:10 PM, "Jared Still" <jkstill_at_gmail.com> wrote:
>>
>>>
>>> Thanks Jared. The manual says disable Transparent Huge Pages but use
>>> standard HugePages for enhanced performance: https://docs.
>>> oracle.com/database/121/UNXAR/appi_vlm.htm#UNXAR428
>>>
>>> Is that a setting listers use? If so, any warnings or due diligence
>>> work? Thanks again.
>>>
>>>
>>>
>>> On Sat, Feb 17, 2018 at 7:59 PM, Jared Still <jkstill_at_gmail.com> wrote:
>>>
>>>> Sorry, should have said already disabled on oracle linux, both 6 and 7
>>>>
>>>> sent from my mobile, so expert typos
>>>>
>>>> On Feb 17, 2018 5:10 PM, "Jared Still" <jkstill_at_gmail.com> wrote:
>>>>
>>>>> Re hugepages, only on redhat, already disabled on Linux 7
>>>>>
>>>>> sent from my mobile, so expert typos
>>>>>
>>>>> On Feb 12, 2018 8:35 PM, "Orlando L" <oralrnr_at_gmail.com> wrote:
>>>>>
>>>>>> List
>>>>>>
>>>>>> We are planning to install Oracle RAC 12.1 on Linux 7.
>>>>>>
>>>>>> 1) I am looking for a step by step instruction guide if any one has
>>>>>> it. Or point me to a good link. I am more interested in the OS settings,
>>>>>> os patches, potential trips, etc,
>>>>>>
>>>>>> It should be straight forward till I saw today in the official Grid
>>>>>> infrastructure install guide that you should disable Transparent Huge pages
>>>>>> in Linux and that it is enabled by default. I started wondering what else
>>>>>> I could have missed buried in there.
>>>>>>
>>>>>> 2) Another thing helpful would be any tool that we could use to
>>>>>> simulate the current production load in the new env. I considered RAT, but
>>>>>> that is out of qn because of the $
>>>>>>
>>>>>> Thanks
>>>>>> Orlando.
>>>>>>
>>>>>
>>>

--
http://www.freelists.org/webpage/oracle-l