Curious /etc/system settings in Solaris

Hello all,

One of the database servers that I am currently working on is a Sun 6500, running Solaris 2.7. It's a fairly large machine, with 20 gig of memory. It's being used for development and testing for multiple applications.

When I began installing our particular versions of Oracle (7.3.4.5 and 8.1.7) on the box, I noticed that there were several tunables settings in /etc/system that I had not seen on Solaris boxes previously. Is anyone familiar with the settings that I have listed below? I have placed an <---- to the right of the tunables in question. Could they perhaps be applicable to an HP-UX server?  So far I've only worked on Sun, AIX and Linux servers. The shop where this server is located has been primarily HP-UX in the past, so I thought that these might be legacy settings.

On Solaris, I've heard that it isn't a good idea to fool around too much with tunables if it isn't necessary. Portions of the kernel are "dynamic", and unneeded settings could limit OS operations.

Some of the typical Oracle settings don't look optimal either,  for example semmns=15000!!, but that is an issue for another time.

Any info would be greatly appreciated,

Lou Avrami

• Following paraameters added under change # 144754 for Oracle install. set tune_t_gpgslo=250 <----- set tune_t_minarmem=100 <----- set tune_t_minasmem=250 <----- set msgsys:msginfo_msgmap=200 <----- set msgsys:msginfo_msgmni=100 <----- set msgsys:msginfo_msgtql=80 <----- set msgsys:msginfo_msgseg=2048 <----- set semsys:seminfo_semmap=100 <----- set semsys:seminfo_semmnu=800 <----- set semsys:seminfo_semume=100 <----- set pln:pln_enable_detach_suspend=1 <----- set soc:soc_enable_detach_suspend=1 <----- set socal:socal_enable_suspend=1 <----- set fcaw:force32 = 1 <----- set shmsys:shminfo_shmmax=4294967295 set shmsys:shminfo_shmmin=1 set shmsys:shminfo_shmmni=100 set shmsys:shminfo_shmseg=10 set semsys:seminfo_semmni=500 set semsys:seminfo_semmsl=2010 set semsys:seminfo_semmns=15000 set semsys:seminfo_semopm=100 set semsys:seminfo_semvmx=32767
• End change # 144754

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Author: Louis Avrami
  INET: avramil_at_concentric.net

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