RE: Solaris 10 shmmax

  • From: "Kevin Closson" <kevinc@xxxxxxxxxxxxx>
  • To: "Hameed, Amir" <Amir.Hameed@xxxxxxxxx>, <ax.mount@xxxxxxxxx>, <oracle-l@xxxxxxxxxxxxx>
  • Date: Mon, 26 Mar 2007 10:08:44 -0700

The 490 is a flat memory box and the Solaris port is smart enough to
behave correctly.


On the other hand, I have a lab server( Sun v490) running on
Solaris9. The shmmax is set to 20GB. My SGA is 12GB and I am seeing only
one segment from ipcs. I have not tinkered with the NUMA optimization
parameter. Per Metalink note 39926.1, multiple shared memory segments in
10gR2 are there for performance reason. Why is the behaviors of shared
memory segments in 10gR2 is different on the same platform (v490 versus



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