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Setting Kernel Parameters for Solaris 10 before installing Oracle 10G

Posted on 2006-11-28
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Last Modified: 2013-12-27
I am trying to install oracle 10g in a solaris 10 environment and the instructions for setting the values for the kernel parameters in the system file are confusing me. In the installation guide it says:

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 also 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 file to implement the System V TPC. Solaris 10 uses
the resource control facility for its implementation.

Table:

Parameter Replaced by Resource Control Recommended Value
noexec_user_stack NA 1
semsys:seminfo_semmni project.max-sem-ids 100
semsys:seminfo_semmsl process.max-sem-nsems 256
shmsys:shminfo_shmmax project.max-shm-memory 4294967295
shmsys:shminfo_shmmni project.max-shm-ids 100

It also says the following:

On Solaris 10, use the following procedure to view the current value specified for
resource controls, and to change them if necessary:

1. To view the current values of the resource control, enter the following commands:
# id -p // to verify the project id
uid=0(root) gid=0(root) projid=1 (user.root)
# prctl -n project.max-shm-memory -i project user.root
# prctl -n project.max-sem-ids -i project user.root

2. If you must change any of the current values, then:

a. To modify the value of max-shm-memory to 6 GB:
# prctl -n project.max-shm-memory -v 6gb -r -i project user.root

b. To modify the value of max-sem-ids to 256:
# prctl -n project.max-sem-ids -v 256 -r -i project user.root

------------------------------------------------------------------------------- ------------------

Someone on another forum said check the following:

5. Check kernel parameters
set shmsys:shminfo_shmmax=4294967295
set shmsys:shminfo_shmmin=1
set shmsys:shminfo_shmmni=100
set shmsys:shminfo_shmseg=10
set semsys:seminfo_semmns=2000
set semsys:seminfo_semmsl=1000
set semsys:seminfo_semmni=100
set semsys:seminfo_semopm=100
set semsys:seminfo_semvmx=32767
------------------------------------------------------------------------------- ------------

What should I do? Am I suppose to only edit the system file as shown in step 5 or should I issue the prctl commands in addition to editing the system file? Or should I just issue the prctl commands?

Please help!
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Question by:sikyala
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Tintin earned 500 total points
ID: 18031474
You can do either.

Adding entries to /etc/system was the old way of setting Oracle kernel settings, whereas using project settings is the preferred option now as it is more flexible/fine tuned.
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by:sikyala
ID: 18040877
Thank you for clearing that up for me. It worked.
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