Solaris "infinite" shmmax value?

  • From: Lou Avrami <avramil@xxxxxxxxxxxxxx>
  • To: <oracle-l@xxxxxxxxxxxxx>
  • Date: Fri, 25 Aug 2006 11:14:53 -0400 (EDT)

Hi all,

I've recently inherited several large Solaris servers that need to be 
reconfigured for Oracle databases, starting with the the kernel settings.

In HP-UX, it's possible to set the value of shmmax to as high as 0x80000000, 
the amount of physical memory on the server.

I believe back in the 32-bit days the equivalent could be achieved in Solaris 

     set shmsys:shminfo_shmmax=0xFFFFFFFF

In Solaris, is a shmmax setting of

     set shmsys:shminfo_shmmax=0x40000000
     set shmsys:shminfo_shmmax=0x80000000

legitimate and is it "infinite", i.e. the amount of physical memory
available on the server?

Lou Avrami


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