Kernel parameter tuning in Solaris 10

Hi Guru's
Can you any one help me to find the some good docs for Solaris kernel tuning. How to change the kernel parameter online?
How to do kernel tuning in online and what is the purposre of /etc/system and sysdef command.
How I can search for exisiting kernel value.
Thanks in advance.
Jimbe

There is interesting info at [Solaris Internals|http://www.solarisinternals.com/wiki/index.php/Solaris_Internals] .
have a good day,
Glen

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Rlim_fd_max Kernel Parameter on Solaris 9

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I am installing oracle 10g on Solaris 10.
I have a warning on kernel parameter missing (shminfo_shmmax for example) during the system check.
I understood that with the 10 version of solaris these parameters are replaced by ressources control and I have checked them. They are correctly setted.
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Sorry for my english.

You are right. Since Solaris 10 kernel parameters settings in /etc/system is obsolete and some parameters are deprecated.
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What is the resource control corresponding to each kernel parameter

Hi
I am trying to prepare (i.e. tune) a Solaris 10 instance for an Oracle 10g install using a Solaris 10 project.
I am new to using Solaris 10 project resource controls so I might get some of this totally wrong.
I know all of the "old" kernel parameter names: what each represents and its' required value and I know some of the corresponding resource controls but not all of them.
That is I do not know the resource control corresponding to each and all of the kernel parameters.
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I know I can set some kernel parameters in /etc/system but that should only be used for system - wide kernel parameters, right ?
I know there are project, process, task and zone classes of resource controls.
Can a resource control of any and all of these types be set in a project ?
Are zone resource controls equivalent to system-wide resource controls ?
Are there corresponding resource controls to all kernel parameters e.g. such as noexec_user_stack ?
I have set noexec_user_stack in /etc/system.
And finally - just to be sure - using a project makes the resource control values permanent, right ?
Thanks
Brett.

Hi;
Please check below which could be helpful for your issue:
Kernel setup for Solaris 10 using project files [ID 429191.1]
Regard
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Hi everybody,
I trying to install Oracle Application server in solaris native zone. I am getting the following error " Oracle application Server 10g Web Cache requires the kernel parameter rlim_fd_max to be set to a valuse of 65536 or higher. Please set rlim_fs_max to 65536 or higher , reboot the machine asn restart the installation.
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65536
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Sorry, doubled response
Edited by: brusell on Jun 10, 2010 4:24 AM

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I'm running Oracle 10g R2 on Solaris 10. Does anyone know how to set the shmmax kernel parameter? According to Oracle documention, all kernel parms have been deprecated except for shmmax, but I believe this is stored and set in a different location on Solaris 10.
Thanks

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Metalink note 317257.1
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Installing OCS 10g R1 on Solaris 10
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+919948677317

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제품 : ORACLE SERVER
작성날짜 : 2002-04-12
DB_BLOCK_BUFFERS PARAMETER TUNING(ORACLE7)
==========================================
Purpose
Oracle7 version의 database에서 db block buffer의 값이 적당한 지를
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rem
rem connect as system user id
rem
col logical_reads format 999,999,999,999
col physical_reads format 999,999,999,999
col physical_writes format 999,999,999,999
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c.value physical_reads,
round(100*(a.value+b.value-c.value)/(a.value+b.value),2) ratio,
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from sys.v_$sysstat a,
sys.v_$sysstat b,
sys.v_$sysstat c,
sys.v_$sysstat d
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select 200*trunc(indx/200)+1 || ' to ' ||
200*(trunc(indx/200)+1) "Interval",
sum(count) "Additional Buffer Cache Hits"
from sys.x$kcbrbh
group by trunc(indx/200)
Interval Additional Buffer Cache Hits
1 to 200 300
201 to 400 250
401 to 600 180
601 to 800 80
801 to 1000 50
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DB_BLOCK_LRU_STATISTICS=TRUE
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정도를 알아본다.
- 아래의 경우는 1 부터 600 까지의 버퍼만 사용되고 있음을 알 수 있다.
col Interval format a20
prompt Number of Losing Cache Hits (LCH)
select 200*trunc(indx/200)+1 || ' to ' ||
200*(trunc(indx/200)+1) "Interval",
sum(count) "Losing Buffer Cache Hits"
from sys.x$kcbcbh
group by trunc(indx/200)
Interval Losing Buffer Cache Hits
1 to 200 3915
201 to 400 434
401 to 600 199
601 to 800 0
9801 to 10000 0

To MMM, the hit ratio is currently 100%. We want to lower that to about 95% and save some RAM at the expense of some slower queries.
To KM, no we are not using any stats_pack utilities.
Can anyone tell me the init.ora parameter to set in Oracle 8.1.7.4 to gets measures into the above table?

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Hello,
We are going to install 11.2.0.3 on Oracle Solaris 11(Sparc 64bit).
There is no kernel settings information for solaris 11 in installation guide.
http://docs.oracle.com/cd/E11882_01/install.112/e24346/pre_install.htm#CIHFICFD
Can we use the same solaris 10 kernel settings to solaris 11 ?
Also want to know the OS patches and packages for solaris 11.
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Check MOS Doc 169706.1 - Oracle Database on Unix AIX,HP-UX,Linux,Mac OS X,Solaris,Tru64 Unix Operating Systems Installation and Configuration Requirements Quick Reference (8.0.5 to 11.2)
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Hi all,
I am preparing for upgrading my OCS 9.0.4.2 to 10g. While running the Universal Installer it fails within the kernel parameter checks. It complains about two parameters that cannot find in /proc/sys/kernel. The two parameters are: hardnofiles and softnofiles. I don't have any idea what those could be, anyone out there who can tell me what this means?
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Message was edited by:
sbudach

check out /etc/security/limits.conf you should add values to the bottom of that file as shown in the install guide.
This is what I have in mine;
* soft nproc 2047
* hard nproc 16384
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* hard nofile 65536
Cheers.
Ben

Kernel Parameter Update

Best Friends
Recently added new hardware to a production server, before I had:
06 cpu
24 Gb Mem
Now you have:
08 cpu
32Gb Mem
After that, evaluate SGA Delk increase server area was very small, the area now has 8GB SGA
The parameters to increase in this activity increased SGA were:
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sga_max_size                               03Gb      08Gb
db_cache_size                              02Gb      04Gb
SHARED_POOL_SIZE                    816Mb    2.4Gb
shared_pool_reserved_size          84Mb      245 Mb
What I'm not clear is the following,:
After increasing CPU and memory on the server and then adjust these parameters of the SGA, I have to adjust or increase any kernel parameter value??

Hi Friends,
That's the point, I know the parameters needed depending on the SAP installation should have some defaults.
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Hi,
I tried to update ip_local_port_range in sysctl.conf file.
vi /etc/sysctl.conf
net.ipv4.ip_local_port_range=1024 65000
After changing the value i executed following command,
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Please help

You didn't specify if you are on a linux based OS, it looks like you are, but it would be so kind on your side if you clearly specify the OS version and which DB version you are planning to install.
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~ Madrid
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Confirm that SHMMAX kernel parameter is set datastore size

Hi,
I'm getting below exception when i'm trying to create datastore. The error is complaining about failure to create shared memory segment.
I did go through the T-10 documentation and various post on this forum, and have made sure that the OS and the DSN settings are as per the recommended values. The values meets(or rather exceeds) the minimum values.
The values are based on below formulas:
kernel.shmmax (in bytes) = Should be >= PermSize + TempSize + LogBufMB +~50MB overhead
kernel.shmall (in pages) = Should be >= ceil ( SHMMAX / PAGE_SIZE)
SwapTotal (in KB) = Swap space should generally be at least 1.5x total physical memory size. It should be sufficient to allow allocation of a large enough shared memory segment
TempSize (in MB) = Should be >= 40 MB + ceiling( PermSize / 8 MB)
I have pasted below following things. Please, can any one help me resolve this issue.
- exception in ttmessg.log
- output of cat /etc/sysctl.conf
- sys.odbc.ini datastore configuration
- cat /proc/meminfo
- Swap space
- output of ttstatus
- output of ttversion
[oracle@ttnode1 info]$ ttdaemonadmin -stop
TimesTen Daemon stopped.
[oracle@ttnode1 info]$ ttdaemonadmin -start
TimesTen Daemon startup OK.
[oracle@ttnode1 info]$ ttisql "dsn=tt"
Copyright (c) 1996-2011, Oracle. All rights reserved.
Type ? or "help" for help, type "exit" to quit ttIsql.
connect "dsn=tt";
*836: Cannot create data store shared-memory segment, error 22*
The command failed.
Done
The exception in ttmesg.log
[oracle@ttnode1 info]$ tail -f ttmesg.log
2013-01-14 17:42:49.98 Warn: : 6533: TimesTen Daemon Release 11.2.2.4.0.tt started.
2013-01-14 17:42:59.45 Err : : 6533: TT14000: TimesTen daemon internal error: Error 22 creating shared segment, KEY 0x0200778b
2013-01-14 17:42:59.45 Err : : 6533: -- OS reports invalid shared segment size
2013-01-14 17:42:59.45 Err : : 6533: -- Confirm that SHMMAX kernel parameter is set > datastore size
2013-01-14 17:45:32.67 Warn: : 6533: request id check 'MKB9+MF7V7DybTjglCEC/10d5/N7FCEFtayvZF4a9xQ=' failed (-5)
2013-01-14 17:47:18.45 Warn: : 6533: request id check 'u6GF7bBtmRQCXKYMAWa7LhwCv1GtIG8HXdW0GLRLHEU=' failed (-5)
2013-01-14 17:47:41.62 Warn: : 6533: request id check 'nNAzUc/plNUStN85qP9htbsz/E5psODMEeRYLmE/n50=' failed (-5)
2013-01-14 23:15:34.58 Warn: : 8590: TimesTen Daemon Release 11.2.2.4.0.tt started.
2013-01-14 23:15:43.44 Err : : 8590: TT14000: TimesTen daemon internal error: Error 22 creating shared segment, KEY 0x02008294
2013-01-14 23:15:43.44 Err : : 8590: -- OS reports invalid shared segment size
2013-01-14 23:15:43.44 Err : : 8590: -- Confirm that SHMMAX kernel parameter is set > datastore size
2013-01-14 23:16:11.23 Warn: : 8590: request id check 'v4TJ+ZyP3KRvGxfkguLgxNyRUdtfw/MMFrvR2tWMUBk=' failed (-5)
2013-01-14 23:18:01.34 Warn: : 8590: request id check 'p4DVyvW75Fjlo3dQ5f8OFbk4qpolqj8gFyQhqfW4ekQ=' failed (-5)
2013-01-14 23:19:50.28 Warn: : 8590: request id check 'DPQ8gSYcljQtkuvx6ccI5a5OGcjXklItV4Mj3Cf0DmA=' failed (-5)
2013-01-14 23:41:01.97 Warn: : 8820: TimesTen Daemon Release 11.2.2.4.0.tt started.
*2013-01-14 23:41:10.10 Err : : 8820: TT14000: TimesTen daemon internal error: Error 22 creating shared segment, KEY 0x02008294*
*2013-01-14 23:41:10.10 Err : : 8820: -- OS reports invalid shared segment size*
*2013-01-14 23:41:10.10 Err : : 8820: -- Confirm that SHMMAX kernel parameter is set > datastore size*
2013-01-14 23:42:20.31 Warn: : 8820: request id check 'sHRtjK5AUKI/RYPN6Mf6ivOPeGVFysbXT4eU9dfBZPw=' failed (-5)
2013-01-14 23:43:24.14 Warn: : 8905: TimesTen Daemon Release 11.2.2.4.0.tt started.
2013-01-14 23:43:29.64 Err : : 8905: TT14000: TimesTen daemon internal error: Error 22 creating shared segment, KEY 0x02008294
2013-01-14 23:43:29.64 Err : : 8905: -- OS reports invalid shared segment size
2013-01-14 23:43:29.64 Err : : 8905: -- Confirm that SHMMAX kernel parameter is set > datastore size
Here is the OS setting.
*[oracle@ttnode1 ~]$ cat /etc/sysctl.conf*
# Kernel sysctl configuration file for Red Hat Linux
# For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and
# sysctl.conf(5) for more details.
# Controls IP packet forwarding
net.ipv4.ip_forward = 0
# Controls source route verification
net.ipv4.conf.default.rp_filter = 1
# Do not accept source routing
net.ipv4.conf.default.accept_source_route = 0
# Controls the System Request debugging functionality of the kernel
kernel.sysrq = 0
# Controls whether core dumps will append the PID to the core filename
# Useful for debugging multi-threaded applications
kernel.core_uses_pid = 1
# Controls the use of TCP syncookies
net.ipv4.tcp_syncookies = 1
# Controls the maximum size of a message, in bytes
kernel.msgmnb = 65536
# Controls the default maxmimum size of a mesage queue
kernel.msgmax = 65536
# Controls the maximum shared segment size, in bytes
kernel.shmmax = 68719476736
# Controls the maximum number of shared memory segments, in pages
kernel.shmall = 4294967296
Here's the DSN setting
* Datastore configuration in sys.odbc.ini file*
*[oracle@ttnode1 info]$ grep -v ^# sys.odbc.ini | sed '/^ *$/d'
[ODBC Data Sources]
TT=TimesTen 11.2.2 Driver
[TT]
Driver=/home/oracle/TimesTen/tt/lib/libtten.so
DataStore=/home/oracle/TimesTen/tt/info/DStore/itt_11224
DatabaseCharacterSet=AL32UTF8
PermSize=128
TempSize=96
ReplicationApplyOrdering=0
ReplicationParallelism=4
LogBufParallelism=4
LogBufMB=32
LogFileSize=32
LogFlushMethod=2
*[ice@ttnode1 ~]$ cat /proc/meminfo*
MemTotal: 3865624 kB
MemFree: 2287936 kB
Buffers: 9744 kB
Cached: 189340 kB
SwapCached: 62588 kB
Active: 739244 kB
Inactive: 796816 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 3865624 kB
LowFree: 2287936 kB
SwapTotal: 2031608 kB
SwapFree: 1755480 kB
Dirty: 316 kB
Writeback: 0 kB
AnonPages: 1310800 kB
Mapped: 24260 kB
Slab: 12952 kB
PageTables: 8712 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 3964420 kB
Committed_AS: 2886040 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 1616 kB
VmallocChunk: 34359736599 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
Hugepagesize: 2048 kB
*[ice@ttnode1 ~]$ grep SwapTotal /proc/meminfo*
SwapTotal: 4128752 kB
Earlier the swap space was 2031608 KB, but snice it shuold be 1.5 times the physical memory, i bumped it up to its current value
*[oracle@ttnode1 info]$ ttstatus*
TimesTen status report as of Mon Jan 14 17:47:32 2013
Daemon pid 6533 port 53398 instance tt
TimesTen server pid 6550 started on port 53399
Accessible by group oinstall
End of report
*[oracle@ttnode1 info]$ ttversion*
TimesTen Release 11.2.2.4.0 (64 bit Linux/x86_64) (tt:53398) 2012-09-24T08:28:05Z
Instance admin: oracle
Instance home directory: /homankse/oracle/TimesTen/tt
Group owner: oinstall
Daemon home directory: /home/oracle/TimesTen/tt/info
Thanks,
Ved

Hi,
On continuing my debugging steps, if checked the limits for IPC facility.
ipcs -m -l
------ Shared Memory Limits --------
max number of segments = 4096
max seg size (kbytes) = 32768
max total shared memory (kbytes) = 8388608
min seg size (bytes) = 1
This says that "max number of segments = 4096", where as the kernel parameter is defined as "kernel.shmall = 4294967296".
Am i correct in understanding that "max number of segments" is same as "kernel.shmall" and the values should be same.
Also, it says that "max seg size (kbytes) = 32768" ie around 32MB, where as the kernel parameter is defined as "kernel.shmmax = 68719476736" i.e around 64BG.
and since, the DSN is requesting to create shared memory segment of 128MB, which is greater that 32MB(as per max seg size (kbytes) = 32768), Timesten is throwing the error.
Thanks everyone for helping me out.
_ved

Kernel parameter tuning in Solaris 10

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