Oracle Database 10g Configuring Kernel Parameters for Solaris SPARC 64-Bit)

Configuring Kernel Parameters

Verify that the kernel parameters shown in the following table are set to values greater than or equal to the recommended value shown on Solaris 8 and Solaris 9 operating systems. The procedure following the table describes how to verify and set the values.

Parameter
Recommended Value


set noexec_user_stack=1
set semsys:seminfo_semmni=100
set semsys:seminfo_semmns=1024
set semsys:seminfo_semmsl=256
set semsys:seminfo_semvmx=32767
set shmsys:shminfo_shmmax=4294967295
set shmsys:shminfo_shmmin=1
set shmsys:shminfo_shmmni=100
set shmsys:shminfo_shmseg=10


Note:The following parameters are obsolete in Solaris 9:
shmsys:shminfo_shmmin
shmsys:shminfo_shmseg

On Solaris 10, verify that the kernel parameters shown in the following table are set to values greater than or equal to the recommended value shown. The table aslo contains the resource controls that replace the /etc/system file for a specific kernel parameter.

Note:In Solaris 10, you are not required to make changes to the

/etc/system

On Solaris 8 and Solaris 9 operating systems, use the following procedure to view the current value specified for these kernel parameters, and to change them if necessary:
To view the current values of these parameters, enter the following commands:

# grep noexec_user_stack /etc/system
# /usr/sbin/sysdef grep SEM
# /usr/sbin/sysdef grep SHM

If you must change any of the current values, then:
Create a backup copy of the /etc/system file, for example:

# cp /etc/system /etc/system.orig

Open the /etc/system file in any text editor and, if necessary, add lines similar to the following
(edit the lines if the file already contains them):set noexec_user_stack=1

set semsys:seminfo_semmni=100
set semsys:seminfo_semmns=1024
set semsys:seminfo_semmsl=256
set semsys:seminfo_semvmx=32767
set shmsys:shminfo_shmmax=4294967295
set shmsys:shminfo_shmmin=1
set shmsys:shminfo_shmmni=100
set shmsys:shminfo_shmseg=10

Enter the following command to restart the system:

# /usr/sbin/reboot