Determining OS Kernel parameter settings in HP ITANIUM

Hi
Can any one help me out to determine the depedant OS kernel parameters settings in HP IA-64 for Oracle database 10.2.0.4 after increasing the processes parameter value in the database level .
As after increasing the processes parameter to 10000 , we are getting n number of issues related to one or the other OS kernel parameter , so we want to take one single downtime and settle all the issues.
Regards,
Phani Kumar P

Hi
Acutally we already increased the processes parameter to 10000 by modifying nproc value to 30000 , now we are receiving issues respect to database as below and inturn there is problem in getting connected to the database giving ora-12502 error
Errors in file /ora/newdump/ACEPROD/udump/aceprod1_ora_4712.trc:
ORA-00603: ORACLE server session terminated by fatal error
ORA-27504: IPC error creating OSD context
ORA-27300: OS system dependent operation:bind failed with status: 227
ORA-27301: OS failure message: Can't assign requested address
ORA-27302: failure occurred at: sskgxpcre3
kkjcre1p: unable to spawn jobq slave process
Tue Jan 5 18:28:57 2010
Errors in file /ora/newdump/ACEPROD/bdump/aceprod1_cjq0_20387.trc:
So now we want to fix the issues by setting optimal values for OS Kernel parameter for NPROC value equals 30000.
Regards,
Phani Kumar p
+919948677317

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Hello SC,
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Regards, Mark

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Sorry for my english.

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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:
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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.
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_ved

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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.
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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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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.
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Can a resource control of any and all of these types be set in a project ?
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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
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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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Kernel parameter for zones

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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Sorry, doubled response
Edited by: brusell on Jun 10, 2010 4:24 AM

Installing OCS 10g on RHEL 3 (Upd 4) failing kernel parameter checks

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?
Thanks,
Stephan
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;
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Cheers.
Ben

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Best Friends
Recently added new hardware to a production server, before I had:
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32Gb Mem
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What I'm not clear is the following,:
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Hi Friends,
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ALTER SYSTEM SET parallel_threads_per_cpu=2 SCOPE=SPFILE;
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commit;
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Hello. Read Note 601157 - Oracle9i: Server Parameter File -->
in this note SPFILE - Restoring an Inconsistent SPFILE
Regards.

Could not update the kernel parameter when oracle 10g Installation.

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,
sysctl -p
Error : Unknown error 22 setting key 'net.ipv4.ip_local_port_range'
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.
When I perform installations of DB10gR2 on OEL4/OEL5 or RHEL4/RHEL5 i issue this commands:
echo net.ipv4.ip_local_port_range = 1024 65000 >> /etc/sysctl.conf
Once the kernel parameter have been set, the kernel must be re-read with the /sbin/sysctl -p command.
~ Madrid
http://hrivera99.blogspot.com

Determining OS Kernel parameter settings in HP ITANIUM

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