shared memory

[Satish Y]

Hi Experts,

I am using HP-UX 10.20, K580 with 4GB(3.75GB) RAM.

I am trying configure shmmax to 1.25GB, but in system(SAM) it is saying 1GB is maximum allowable value. Is there any possibility to change max allowable/upper limit value?.

Any kind of replies encouraged.

Cheers...
Satish.

[Deepak Extross]

Multiple posts?
See http://forums.itrc.hp.com/cm/QuestionAnswer/1,11866,0xa9f6c6af36b7d5118ff10090279cd0f9,00.html

[Wodisch]

Hello,

the simple answer is: you cannot!
since 10.20 is 32bits only, the maximum size of SHMMAX is exactly 1GB!
But with tricks (SHMEM_MAGIC) your application could use more than 1 shared memory segment, with Informix up to 2.75GB are possible, with Oracle up to 1.75GB only, though...

HTH,
Wodisch

[harry d brown jr]

Great opportunity to justify an upgrade to 11i.

live free or die
harry

[Sanjay_6]

Hi Satish,

Take a look at the threads below on how to increase your shared memory on a system with 10.20.

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=45c449a50d6534a50a/screen=ckiDisplayDocument?docId=200000024603780

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=45c449a50d6534a50a/screen=ckiDisplayDocument?docId=200000028705821

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=45c449a50d6534a50a/screen=ckiDisplayDocument?docId=200000024645549

Hope this helps.

Regds