Memory Add

[Eric Jacklin]

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

[Johnson Punniyalingam]

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

[Johnson Punniyalingam]

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

[sujit kumar singh]

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]

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]

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]

Thanks