cancel
Showing results for 
Search instead for 
Did you mean: 

Memory Add

Eric Jacklin
Regular Advisor

Memory Add

Hi team,

We are going to upgrade the memory in one of our RP7400 server which is running oracle database.So After upgrade the memory do i need to chage Swap ?,Kernal Parameter ?,

Current : 8 GB
Going to add : 4 GB
OS : HPux 11.11
Model : Rp7400
Apps : Oracle 10g
Swap 21 GB
6 REPLIES
Johnson Punniyalingam
Honored Contributor

Re: Memory Add

Yes , You need to Increase swap by "double the size of your Memory"

Current : 8GB + New 4 GB = 12 GB (RAM)
Current :21GB + New 3 GB = 24 GB (swap)

steps to Increase you swap space please check the attachement, (Example)

Kernal Parameter?
(No Need)

Thanks,
Johnson
Problems are common to all, but attitude makes the difference
Johnson Punniyalingam
Honored Contributor

Re: Memory Add

Hi,

Sorry, You need Check Kernal Parameter. also

# kmtune |grep -i swapmem_on
swapmem_on 1 - 1

(The value should be 1 -1 )

Thanks,
Johnson

Problems are common to all, but attitude makes the difference
sujit kumar singh
Honored Contributor

Re: Memory Add

yes

whnever memory is added to the system, it is a good practice to increase the swap space of the system keeping in view that whole of the memory when is getting utilised u also have provision for swapping of the memory in the new increased memeory capacity scenario.
this is taking in view of the potential performance issues.


regards

Sujit
sujit kumar singh
Honored Contributor

Re: Memory Add

these are best practices that is used ... but these are not hard and fast... that u will have to increse the swap space along with.
but this is always a good idea keeping in perspective the Entire swapping of the Memory in the Worst load scenarios.


Sujit
Dennis Handly
Acclaimed Contributor

Re: Memory Add

You probably have plenty of swap now. There really isn't a need for swap being twice the amount of RAM.
Other than increasing RAM, do you plan to increase the load on your system? Make your SGA larger?
Eric Jacklin
Regular Advisor

Re: Memory Add

Thanks