- Community Home
- >
- Servers and Operating Systems
- >
- Operating Systems
- >
- Operating System - HP-UX
- >
- shmmax !!!
Categories
Company
Local Language
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Forums
Discussions
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Community
Resources
Forums
Blogs
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО03-29-2002 02:17 AM
тАО03-29-2002 02:17 AM
shmmax !!!
I need information/clarification on the shmmax parameter. I would like to know what should be the ideal value of shmmax if I have physical memory of 10GB and Oracle processes being used
are highly memory intensive.
Please suggest....
Thanks ..
Venky
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО03-29-2002 03:27 AM
тАО03-29-2002 03:27 AM
Re: shmmax !!!
The shmmax 'Single shared memory segment' is limited to 1 GB (0x40000000)
on a 32-bit HP-UX 11.0 system. When running under the 64-bit operating
system, shmmax is limited to 1 TB (0x10000000000).
The maximum shared memory accessible (all segments/quadrants) is limited
to 2.75 GB on 32-bit, and 4 TB on 64-bit HP-UX systems.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО03-29-2002 04:34 AM
тАО03-29-2002 04:34 AM
Re: shmmax !!!
If you are any oracle, irrespective of RAM,
shmmax of 4GB is more enough
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО03-29-2002 05:57 AM
тАО03-29-2002 05:57 AM
Re: shmmax !!!
Check the docs at,
http://docs.hp.com/hpux/onlinedocs/os/KCparam.ShMmax.html
-K.Vijay
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО03-29-2002 08:47 AM
тАО03-29-2002 08:47 AM
Re: shmmax !!!
If you are using 64 bit then no problem But if you are using 32bit you have to use memory windows to increase the shared memory in Oracle.
Sandip
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО03-29-2002 08:56 AM
тАО03-29-2002 08:56 AM
Re: shmmax !!!
if you have a system with 10GB of RAM, then you must be running HP-UX11 with 64bit kernel, anyway.
And then a 32bit Oracle make almost never sense IMHO.
So if you are left with 64bit everywhere you just have to care that nobody resets the value of SHMMAX to something smaller than your (free) RAM-size...
Just my $0.02,
Wodisch
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО03-29-2002 11:57 AM
тАО03-29-2002 11:57 AM
Re: shmmax !!!
This is a known problem.
The fix is to patch with PHKL_24032.
Hope that helps.
Ross Martin
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО03-29-2002 12:06 PM
тАО03-29-2002 12:06 PM
Re: shmmax !!!
The maximum value for shmmax for a 32-bit application is 1 Gb (0x40000000). But
since the maximum for a shared memory segment for a 64-bit application is 4
Terabytes, the following correction can be made to allow this:
1. Edit /usr/conf/master.d/sysv-shm and change:
*range shmmax<=0x40000000
To:
*range shmmax<=0x40000000000
2. Run '/usr/sam/lbin/getkinfo -b'
3. Use SAM to make the desired changed to shmmax
Ross Martin
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-03-2002 05:14 AM
тАО04-03-2002 05:14 AM
Re: shmmax !!!
set :
shmmax and maxdsiz_64bit to 4GB,
maxdsiz to 1 GB
maxtsiz to 1 GB
My experience tells me that the system
performs best when shmmax and maxdsiz_64bit
are equal.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-03-2002 05:24 AM
тАО04-03-2002 05:24 AM
Re: shmmax !!!
Just pump it up to your amount of physical RAM, ie 10GB.
This means just that the largest allowable memory segment is 10GB.
What you'll end up using for your Oracle SGA is a different story. This is dependent on the init.ora settings.
Andreas