Shared Memory Settings for Oracle - Machine Spec Specific?

Hi,
I've been asked to apply some shared memory settings for Oracle on a new V210. The DBA has asked that we simply copy the settings from one system file to the new machine.
My problem is that I'm not entirely sure whether this is the best course of action. The machine the settings are taken from is a E280R with 2GB Memory and 2 x 900Mhz processors. The new V210 has 2GB and 2 x 1.33Ghz.
Surely the memory settings should be different? Don't worry, I've copied the relevant settings - not the whole system file!
Thanks for any advice,
John

Hi John,
Normally, When you want to apply the shm. We normally for production machines , consider 1/3rd of your physical memory. For eg. If you have 16gb of physical memory, I would consider around 4gb of shm_max.
Thanks,
Keshav .N

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Sysresv returns multiple shared memory IDs for one database

Shared Memory:
ID KEY
8 0x00000000
9 0x00000000
10 0x00000000
13 0x00000000
14 0xae2ae9d0
Please see this 'sysresv' output. It returns multiple shared memory IDs for one database (althouth all are 0s except one). Why is this? Does it matter? It seems not eating up memory. Stop and start database didn't help.

* System Configuration
swap files
swapfile dev swaplo blocks free
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30000 maximum number of processes (v.v_proc)
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30 auto update time limit in seconds (NAUTOUP)
25 page stealing low water mark (GPGSLO)
1 fsflush run rate (FSFLUSHR)
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CO4P:/opt/oracle:>ipcs -ma
IPC status from <running system> as of Monday, April 21, 2008 2:50:10 PM PDT
T ID KEY MODE OWNER GROUP CREATOR CGROUP NATTCH SEGSZ CPID LPID ATIME DTIME CTIME
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m 10 0 rw-r--- oracle dba oracle dba 481 2030043136 20322 25104 14:50:10 14:50:08 11:24:40
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Memory settings for AAS 9.3.0.1

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Thanks for your help

I posted on my blog a while back about how to setup writing to stdout using Tomcat; I think if you look at the screenshot I posted there, you can see where the java parameters for AAS are located:
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Memory Settings for Reconciliation

Hello,
What is the recommended memory settings for the application server when reconciling ~400,000 users from LDAP and a Database Table.
I have noticed that IDM 5.5 uses more memory than IDM 5.0. Using various JVM memory settings with IDM5.5, I always seem to get an OutOfMemory error up to 1GB of memory. With IDM5.0 I could set the memory to 512MB and the recon for LDAP and the Database Table would run to completion w/o an OutOfMemory error.
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Shared memory settings from 32 to 64 bit Oracle

Hello,
Questions about Oracle and Shared Memory from 32bit to 64bit Oracle
I have a Sun Sparc V880 server running Solaris 9 with 8xCPUs and 16gb of Ram. It is currently running 6 Oracle (32 bit) 9.2 databases which we are planning to upgrade to 10.2. My question regards the setting of the Solaris 9 kernel parameters speciifically 'shminfo_shmmax'. This is currently set to - 'shmsys:shminfo_shmmax=4294967295'which I believe is the maximum amount of shared memory which can be allocated to a 32bit version of Oracle and the one recommended by Oracle.
Running 'show sga' on all of the current 9.2 databases returns
Total System Global Area
DB     SGA(bytes)
db1     772528008
db2     789305244
db3     772528008
db4     114021228
db5     791238556
db6     789305244
Total = 4045703524 bytes or 3.76786 gb.
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2. I have noticed (through 'sar' stats) that the server occasionally pages (non zero values for pgscan/s and pgfree/s etc.). Since the server mostly only runs the Oracle databases, is this because Oracle can only use circa 4gb of Ram before it starts paging ?
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Any help here would be appreciated

Pl see if MOS Doc 467960.1 (How Important It Is To Set shmsys:shminfo_shmmax Above 4 GB) and the notes it references can help
HTH
Srini

Oracle 9i kernel Settings for Oracle !

All,
I am trying to find Kernel settings for the Oracle 9i
for our platform. It seems like previous dba
never bother to change the kernel settings before
she upgraded from 817 to 9.2.0
Sun Solais 2.8 8 GB RAM
Oracle 9.2.0
Current setting looks like this :
* Begin Oracle shared memory and semaphore settings
set shmsys:shminfo_shmmax=4026531840
set shmsys:shminfo_shmmin=1
set shmsys:shminfo_shmmni=400
set shmsys:shminfo_shmseg=256
set semsys:seminfo_semmni=100
set semsys:seminfo_semmsl=512
set semsys:seminfo_semmns=8192
set semsys:seminfo_semopm=100
set semsys:seminfo_semvmx=32767
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Which does not make any sense to me.
It looks like 8.1.7.
From
Pranav haker

http://download-east.oracle.com/docs/html/A95133_01/toc.htm#770032
http://www.oracle.com/technology/documentation/oracle9i_arch_901.html
HTH. -Kevin

About index memory parameter for Oracle text indexes

Hi Experts,
I am on Oracle 11.2.0.3 on Linux and have implemented Oracle Text. I am not an expert in this subject and need help about one issue. I created Oracle Text indexes with default setting. However in an oracle white paper I read that the default setting may not be right. Here is the excerpt from the white paper by Roger Ford:
URL:http://www.oracle.com/technetwork/database/enterprise-edition/index-maintenance-089308.html
"(Part of this white paper below....)
Index Memory                                  As mentioned above, cached $I entries are flushed to disk each time the indexing memory is exhausted. The default index memory at installation is a mere 12MB, which is very low. Users can specify up to 50MB at index creation time, but this is still pretty low.
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(End here from the white paper excerpt)
My question is:
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3) The white paper also refer to rebuilding an index at some interval like once in a month:   ALTER INDEX DR$index_name$X REBUILD ONLINE;
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Basically while I read the paper, I am still not very clear on several aspects and need help to understand this.
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OrauserN

Perhaps it's time I updated that paper
1. To change max_index_memory you must be a DBA user OR ctxsys. As you say, the ctxsys account is locked by default. It's usually easiest to log in as a DBA and run something like
exec ctxsys.ctx_adm.set_parameter('MAX_INDEX_MEMORY', '10G')
2. Index memory is allocated from PGA memory, not SGA memory. So the size of SGA is not relevant. If you use too high a setting your index build may fail with an error saying you have exceeded PGA_AGGREGATE_LIMIT. Of course, you can increase that parameter if necessary. Also be aware that when indexing in parallel, each parallel process will allocated up to the index memory setting.
What should it be set to? It's really a "safety" setting to prevent users grabbing too much machine memory when creating indexes. If you don't have ad-hoc users, then just set it as high as you need. In 10.1 it was limited to just under 500M, in 10.2 you can set it to any value.
The actual amount of memory used is not governed by this parameter, but by the MEMORY setting in the parameters clause of the CREATE INDEX statement. eg:
create index fooindex on foo(bar) indextype is ctxsys.context parameters ('memory 1G')
What's a good number to use for memory? Somewhere in the region of 100M to 200M is usually good.
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Memory settings for Windows using newest bits

Hi All,
I the install guide for this newest set of bits, I suggested memory settings of 1.5GB for the Xmx value. This doesn't work for 32bit Windows.
On Windows, if you bump up the -Xmx, then you cannot use the PermSize parameter.
The heap size is calculated as -Xmx + PermMaxSize. If these two add more than 1408MB then WLS will not start.
Here is the recommendation for Windows 32bit:
set DEFAULT_MEM_ARGS=%DEFAULT_MEM_ARGS% -XX:PermSize=128m
and
Xmx 1024
and
Managed server configuration
If you are using 32bit Windows, please share your experiences.
Heidi.

So, you do not recommend a single instance install on Windows XP? On our local XP machines we had been running single instance because it seemed simpler and it was recommended in the install instructions. On our shared Windows server the managed server configuration was used.
I have been able to run the latest release of the WLS and BPM Workspace on my local XP machine using these settings configured in my setSOADomainEnv.cmd file. It is very SLOW....30 second response time, but it does run. These same settings are not working for everyone else on my team....they are still playing around to find the right answer for their local XP machines.
set DEFAULT_MEM_ARGS=-Xms640m -Xmx768m
set PORT_MEM_ARGS=-Xms768m -Xmx1536m
set DEFAULT_MEM_ARGS=%DEFAULT_MEM_ARGS% -XX:PermSize=128m -XX:MaxPermSize=512m
set PORT_MEM_ARGS=%PORT_MEM_ARGS% -XX:PermSize=256m -XX:MaxPermSize=512m
I have noticed, however, that over time (maybe an hour or so) the admin server starts sending out of memory warnings. So, I have to stop WLS and restart it in order to keep working with reasonable response tiems. Often these out of memory warnings start when it is running but idle.

More Settings for Time Machine

There are more options needed for time machine on the Snow Lepoard OS. Often (like 10 times a day), I am in the middle of some CPU-intensive task and Time Machine takes off and starts backing up forcing me to manually click Stop Backup on the dropdown box of the Time Machine circle icon. What I would really like are options suspend backup operations when competing software is trying to use the CPU or memory or network.

uursamajor wrote:
There are more options needed for time machine on the Snow Lepoard OS. Often (like 10 times a day), I am in the middle of some CPU-intensive task and Time Machine takes off and starts backing up forcing me to manually click Stop Backup on the dropdown box of the Time Machine circle icon. What I would really like are options suspend backup operations when competing software is trying to use the CPU or memory or network.
As Kappy says, that's unlikely on Snow Leopard, and development on Leopard stopped last Fall.
Under normal circumstances, TM backups shouldn't be terribly intrusive, unless you're backing-up over a network, especially wirelessly, and there's a lot of interference and/or congestion/contention for the network.
A few possibilities:
If you're really on 10.5.2, per your signature, consider upgrading to 10.5.8. There were a lot of improvements after 10.5.2. Info and download available at: http://support.apple.com/downloads/MacOS_X_10_5_8_ComboUpdate Be sure to do a +Repair Permissions+ via Disk Utility (in your Applications/Utilities folder) afterwards.
If you're on 10.5.8 or 10.6.x, please click +My Settings+ at the right of this page and update them.
Your Mac may be backing-up more than it should. See #D4 in Time Machine - Troubleshooting (or use the link in *User Tips* at the top of this forum), for some of the common culprits, and ways to determine what's happening.
Your backups are too slow. See #D2 in Troubleshooting for some possible fixes.

Memory behaviour for Oracle Server 9i & 10g

I need to know why if you are telling to the OS that your Oracle's instance is going to use 500Mb, sometimes it takes even the whole memory with a lot of processes.
Can anyone explain to me this behavior?.
Thank you.
Cecilia.
@}-->--->>-----

Your instance requires an SGA which is shared across all processes. The SGA is usually assigned a big chunk of memory up front.
Your user-oriented 'server' processes also have their own 'working memory' for sorting and other stuff. The more server processes, the more working memory will be allocated.
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Memory settings for WLS server

Hi
In my production server for weblogic the memory settings is set to
MEM_ARGS=-Xms64m -Xmx64m
I have a 4GB of RAM in my server,
If I increase the MEM_ARGS parm will it give a better performance.?
what will be a better number to go with instead of 64M
Please advise
Thanks
DN

Rob
Thanks for the answer ,
I dont have much applications running on this PC other than SQL server.
SQL server is configured to take a mximum of 2GB I believe.
You suggest to change the minimum and maximum to 512 right?
what does the initial part(-XX:MaxPermSize=128m ) of the following line means?
MEM_ARGS="-XX:MaxPermSize=128m -Xms512m -Xmx512m"
Thanks again
DN
Rob Woollen <[email protected]> wrote:
DN wrote:
Hi
In my production server for weblogic the memory settings is set to
MEM_ARGS=-Xms64m -Xmx64m
I have a 4GB of RAM in my server,
If I increase the MEM_ARGS parm will it give a better performance.?Most likely. Is anything else running on this machine? You have a lot
of free memory, and in general larger heaps do help minimize time spent
in garbage collection.
I'd suggest reading
http://edocs.bea.com/wljrockit/docs81/tuning/basic.html#999276
what will be a better number to go with instead of 64MI'd bump it up to 512MB and tune from there.
-- Rob
Please advise
Thanks
DN

Env settings for oracle user , when installing Oracle on linux

Good Morning Oracle Experts ;
Basicallly my major subject is Electrical and Electronics
I am very new to ORACLE/LINUX [ LEARNING ORACLE DBA ] Technology.
I have THREE questions .. Please help me to understand oracle concepts.
QUES 1 :
i am getting confused about “setting bash_profile” and it’s contents
I googled , it said to set env variables for oracle user. Ok .
Can anyone explain clearly what exactly happens when “ setting bash_profile ” ?
MY   BASH_PROFILE SETTINGS
My bash_profile having following contents :
+# Oracle Settings+
TMP=/tmp; export TMP
TMPDIR=$TMP; export TMPDIR
ORACLE_BASE=/u01/app/oracle; export ORACLE_BASE
ORACLE_HOME=$ORACLE_BASE/product/10.2.0/db_1; export ORACLE_HOME
ORACLE_SID=TSH1; export ORACLE_SID
ORACLE_TERM=xterm; export ORACLE_TERM
PATH=/usr/sbin:$PATH; export PATH
PATH=$ORACLE_HOME/bin:$PATH; export PATH
LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib; export LD_LIBRARY_PATH
CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib; export CLASSPATH
+#LD_ASSUME_KERNEL=2.4.1; export LD_ASSUME_KERNEL+
+if [ $USER = "oracle" ]; then+
+if [ $SHELL = "/bin/ksh" ]; then+
ulimit -p 16384
ulimit -n 65536
else
ulimit -u 16384 -n 65536
fi
fi
QUES 2 :
Please note : This url says   lot of env variables
http://www.idevelopment.info/data/Oracle/DBA_tips/Unix/UNIX_4.shtml
2 . In my case , Why following env variables *[LD_ LIBRARY_PATH , CLASS_PATH , PATH]* are missing ?
My pc showing only four env variables   $ env | grep -e ORA -e TNS
ORACLE_SID=TSH1
ORACLE_BASE=/u01/app/oracle
ORACLE_TERM=xterm
ORACLE_HOME=/u01/app/oracle/product/10.2.0/db_1
QUES 3 :
*[ LD_ LIBRARY_PATH , CLASS_PATH , PATH ]*
*Are they [ above mentioned env variables] necessary (or) not necessary for oracle DB ?*
When listing env variables , why   they are not displayed ? (anything wrong ) ?
As a beginner , I expect some clean technical information    to improve my knowledge ..
Thanks in advance ;

Required Output
*$ id*
uid=502(oracle) gid=502(oinstall) groups=502(oinstall),503(dba)
*$ env | sort*
CLASSPATH=/u01/app/oracle/product/10.2.0/db_1/JRE:/u01/app/oracle/product/10.2.0/db_1/jlib:/u01/app/oracle/product/10.2.0/db_1/rdbms/jlib
COLORTERM=gnome-terminal
DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-s2yfterD04
DESKTOP_SESSION=default
DISPLAY=:0.0
G_BROKEN_FILENAMES=1
GDMSESSION=default
GNOME_DESKTOP_SESSION_ID=Default
GNOME_KEYRING_SOCKET=/tmp/keyring-oJUn3E/socket
GTK_RC_FILES=/etc/gtk/gtkrc:/home/oracle/.gtkrc-1.2-gnome2
HISTSIZE=1000
HOME=/home/oracle
HOSTNAME=linuxserver
INPUTRC=/etc/inputrc
LANG=en_US.UTF-8
LESSOPEN=|/usr/bin/lesspipe.sh %s
LOGNAME=oracle
LS_COLORS=no=00:fi=00:di=00;34:ln=00;36:pi=40;33:so=00;35:bd=40;33;01:cd=40;33;01:or=01;05;37;41:mi=01;05;37;41:ex=00;32:*.cmd=00;32:*.exe=00;32:*.com=00;32:*.btm=00;32:*.bat=00;32:*.sh=00;32:*.csh=00;32:*.tar=00;31:*.tgz=00;31:*.arj=00;31:*.taz=00;31:*.lzh=00;31:*.zip=00;31:*.z=00;31:*.Z=00;31:*.gz=00;31:*.bz2=00;31:*.bz=00;31:*.tz=00;31:*.rpm=00;31:*.cpio=00;31:*.jpg=00;35:*.gif=00;35:*.bmp=00;35:*.xbm=00;35:*.xpm=00;35:*.png=00;35:*.tif=00;35:
MAIL=/var/spool/mail/oracle
ORACLE_BASE=/u01/app/oracle
ORACLE_HOME=/u01/app/oracle/product/10.2.0/db_1
ORACLE_SID=TSH1
ORACLE_TERM=xterm
PATH=/u01/app/oracle/product/10.2.0/db_1/bin:/usr/sbin:/usr/kerberos/bin:/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/home/oracle/bin
PWD=/home/oracle
SESSION_MANAGER=local/linuxserver:/tmp/.ICE-unix/4394
SHELL=/bin/bash
SHLVL=2
SSH_AGENT_PID=4450
SSH_ASKPASS=/usr/libexec/openssh/gnome-ssh-askpass
SSH_AUTH_SOCK=/tmp/ssh-cbAqMq4394/agent.4394
TERM=xterm
TMP=/tmp
USER=oracle
_=/usr/bin/env
WINDOWID=42039592
XAUTHORITY=/home/oracle/.Xauthority

What memory settings for Kingmax 3200 MPXC22D-38 512 Mb on a K8T Neo-FSR board?

Hello,
Like many people here, I have been having some major stability problems with this board. I am looking to upgrade my old DDR266 memory to a 512 Mb stick on the MSI approved list and decided to go with the Kingmax MPXC22D-38 DDR400 512 Mb stick. I know that is usually necessary to change the memory settings to achieve stability (which is my main goal) and am looking for recommendations for settings. Any help with what each number means (or which setting it applies to) would also be very helpful.
Also, what would be some good settings for my old DDR266 512Mb memory until the new stuff comes? Memtest86+ reports it at CAS of 2.5-3-3-6, and I am looking mainly for stability.
Thanks for any help in advance.
Cheers,
Tom

Hello,
My stability problems seem to mirror most of the posts here, random freezes that are not reproducible and seem to happen un-related times. It is a complete freeze with no sound, only option is to press reset. I can almost guarantee a freeze when playing a 3d game after about 10-20 minutes.
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Cheers,
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Integrated WLS memory settings for presenting?

Hi gang
At Sage we've started running JDeveloper 11g training courses in Australia. It's becoming rapidly apparent that the integrated WLS memory settings are stuffed for presenting. While presenting I may create a new Faces RC page approx every 5 minutes and frequently re-run the app, and WLS complains of running out of PermGen virtually every 2nd or 3rd run, especially with DVT controls on the page. This is becoming a major problem as it interrupts the training flow many times each day.
We've tried overriding the following entries in the setDomainEnv.cmd file:
<jdev home>/jdeveloper/system11.1.1.0.31.51.88/DefaultDomain/bin/setDomainEnv.cmd
(new values)
set MEM_ARGS=-Xms512m -Xmx768m
set MEM_PERM_SIZE=-XX:PermSize=96m
set MEM_MAX_PERM_SIZE=-XX:MaxPermSize=512m
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Thanks & regards,
CM.

I'm still getting this crash - all the time now! Even if I stop and start the server manually as suggested in the release notes.
I have set my settings to the same as yours in the env file. My laptop is brand new running vista business with 4GB RAM - I have got a very simple app with 2 pages !
I wanted to demo it to a customer to try and sell them ADF - but this has completely put a spanner in the works. Any ideas what might be causing it ? I have logged a TAR about it but in the meantime I thought I'd see if anyone had any suggestions other than those I have already tried.
cheers

Shared Storage allocation for Oracle 10g RAC

Hi,
I am about to implement a Two Node Oracle 10g RAC on Windows 2008 (32-Bit) servers. We are going to use EVA4400 storeage and we have 600 GB for Oracle RAC and database.
I intend to follow the steps given in RACGuides_Rac10gR2OnWindows.pdf mentioned in Note 811271.1 (RAC Assurance Support Team: RAC Starter Kit and Best Practices (Windows)).
I would like to know how should I allocated the storage for OCR,Vote, Database and Flash Recovery Area. Meaning how many LUNs and of what size to be created and presented to both the servers. To start with I need to create a 25 GB database. We will be using Raw Device for OCR and Vote and ASM for Database and Flash Recovery Area.
Please advice.
Thanks,
Thiru

I am about to implement a Two Node Oracle 10g RAC on Windows 2008 (32-Bit) servers. Oracle 10g on Windows 2008 is not supported. Anyway installing a cluster as of today i would use a 64-bit operating system together with a 64-bit database. Everything else is not state-of-the-art anymore.
As of today i would go with 11g Release 1 (11.1.0.7.0) plus latest patches for Clusterware and ASM. Because you are using Windows 2008 you must use 11g Release 1 for the database as well. Bear in mind that Windows 2008 R2 is at this point in time not supported for 11g R1 or 11g R2 either.
I would like to know how should I allocated the storage for OCR,Vote, Database and Flash Recovery Area. Meaning how many LUNs and of what size to be created and presented to both the servers. This is said in the installation documents. Rule of thumb: At least three LUNs of 2 GB for OCR and three LUNs of 2 GB for Voting disk.
To start with I need to create a 25 GB database. We will be using Raw Device for OCR and Vote and ASM for Database and Flash Recovery Area.According to Oracles recommendations: Two disk groups: one for database files, the other for the flashback area.
But your setup may be different (more disk groups,....)
Ronny Egner
My blog: http://ronnyegner.wordpress.com

Shared Memory Settings for Oracle - Machine Spec Specific?

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