Kernel parameters comparison - Solaris9 and Solaris10

SERVER – Solaris9 – Oracle9i  Vs SERVER – Solaris10 – Oracle10g


[ Solaris9] forceload:sys/shmsys
[Solaris10] recommended not set, server impact long time for boot up

[Solaris9] forceload:sys/semsys
[Solaris10] recommended not set, server impact long time for boot up

[ Solaris9] set shmsys:shminfo_shmmax=51539607552
[Solaris10] projmod -s -K “project.max-shm-memory=(priv,48g,deny)” user.oracle

[ Solaris9] set shmsys:shminfo_shmmin=1
[Solaris10] Obsolete in the Solaris 9 release, Solaris 10 also

[ Solaris9] set shmsys:shminfo_shmmni=2048
[Solaris10] projmod -s -K “project.max-shm-ids=(priv,2048,deny)” user.oracle

[ Solaris9] set shmsys:shminfo_shmseg=200
[Solaris10] Obsolete in the Solaris 9 release, Solaris 10 also

[ Solaris9] set semsys:seminfo_semmni=1000
[Solaris10] projmod -s -K “project.max-sem-ids=(priv,1000,deny)” user.oracle

[ Solaris9] set semsys:seminfo_semmns=32767
[Solaris10] Removed in the Solaris 10 release

[Solaris9] semsys:seminfo_semmnu=500
[Solaris10] Removed in the Solaris 10 release.

[ Solaris9] set semsys:seminfo_semmsl=2048.
[Solaris10] projmod -s -K “project.max-sem-nsems=(priv,4096,deny)” user.oracle

[ Solaris9] semsys:seminfo_semvmx=32767.
[Solaris10] Removed in the Solaris 10 release

[ Solaris9] set semsys:seminfo_semopm=2048
[Solaris10] projmod -s -K “process.max-sem-ops=(priv,2048,deny)” user.oracle

[ Solaris9] set maxusers=2048
[Solaris10] recommended not set

[ Solaris9] set max_nprocs=32778
[Solaris10] set max_nprocs=32778

[ Solaris9] set maxuprc=32773
[Solaris10] set maxuprc=32773

[ Solaris9] set rlim_fd_max=65536
[Solaris10] set rlim_fd_max=65536

[ Solaris9] set rlim_fd_cur=2048
[Solaris10] set rlim_fd_cur=2048

[ Solaris9] set noexec_user_stack=1
[Solaris10] set noexec_user_stack=1


*For Veritas NetBackup Performance

[ Solaris9] set msgsys:msginfo_msgtql=512
[Solaris10] Obsolete in the Solaris 10 release

[ Solaris9] set msgsys:msginfo_msgmnb=65536
[Solaris10] Obsolete in the Solaris 10 release

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Conclusion: the following are the important parameters:

*project.max-shm-ids: Maximum shared memory IDs for a project. Replaces shmmni
*project.max-sem-ids: Maximum semaphore IDs for a project.Replaces semmni
*project.max-msg-ids: Maximum message queue IDs for a project. Replaces msgmni
*project.max-shm-memory: Total amount of shared memory allowed for a project. Replaces shmmax
*process.max-sem-nsems: Maximum number of semaphores allowed per semaphore set.Replaces semmsl
*process.max-sem-ops: Maximum number of semaphore operations allowed per semop.Replaces semopm
*process.max-msg-qbytes: Maximum number of bytes of messages on a message queue. Replaces msgmnb
*process.max-msg-messages: Maximum number of messages on a message queue.Replaces msgtql