Kernel Parameter (to do or not to do)

I have seen numerous threads about the Kernel Parameters, however
there seem to be a disagreement if it should be modified on Linux
or if it should not be modified.
Does anyone knows has an answer on this one. If it has to be
modified in the /usr/include/asm/shmparam.h file what are the
exact changes to be done. For example, there is no SHMMNI
define in that file, do I simply add the SHMMNI or what else.
Thanks
Clement
null

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Similar Messages

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

Profile parameter icm/host_name_full is not set correctly

Hi All,
I am working on Solution Manager 4.0. When I execute TCODE "SOLUTION_MANAGER", it gives the following error:
Profile parameter icm/host_name_full is not set correctly (see long text)
When I click on "Long Text", it gives me the following message widow:
Message Number: SOL_GRAPHIC002
Diagnosis
The graphic cannot be displayed, since the profile parameter icm/host_name_full is not set correctly.
Procedure
Set the profile parameter icm/host_name_full correctly.
For more information, see SAP Notes 434918 and 677118.
I have referred to both the notes above. In note# 434918, it says that I need latest kernel patch (which is 150).Also the icm/host_name_full parameter parameter was not there in Solution Manager, so I created in the following manner:
Parameter Name =icm/host_name_full
Parameter Value=smgdcs1s.example.com
But however, the error continues to be the same.
Kindly help me asap.
Thanks in advance.
Regards,
Faisal

Hi Markus,
Earlier the profile was activated and server was also restarted. However, it was not efffective.
Now once again i have activated the profile and restared the server. Now I am able to see the profile and it value in
RZ10
RZ11
Thanks a alot for your valuable inputs
Thanks and Regards,
Faisal

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.
e.g. I know:
semsys:seminfo_semmsl == process.max-sem-nsems == The maximum number of sempahores that can be in one semaphore set
shmsys:shminfo_shmmax == project.max-shm-memory == The maximum size(in bytes) of a single shared memory segment
shmsys:shminfo_shmmni == project.max-shm-ids == The number of shared memory identifiers
But I do not know, for example, what resource control corresponds to:
semsys:seminfo_semmns == The number of semaphores in the system
Is there a list somewhere of the resource control corresponding to each of the kernel parameters ?
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
Helios

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:
                                                     Before      Now
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.
But here, after increasing CPU and memory, there is also some connection to increase certain parameters at the kernel level?
I do not know.
So my consuls, if I increase some kernel parameters.
Thank you for your attention

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

RH Linux vm.swappiness kernel parameter

The linux kernel parameter vm.swappiness affects the tendency of the OS to swap. It has a range from 0 to 100, with 0 causing swapping to occur only when needed and 100 to swap more aggressively. The default setting is 60.
There is little information available regarding an appropriate setting for this for Oracle RAC nodes. Do any of you have experience with swappiness? I have seen a few articles which recommend setting it to zero (0).
Best regards,
Bill

Our systems administrator have inquired about this parameter. I am not fixated on this and do not suffer from compulsive tuning disorder.
You, on the other hand, are obviously compulsive about too many of the wrong things. I'm sure everyone loves working with you...

Maximu Shared Memory (shmmax kernel parameter)

Hi,
in all Unix Installation documents...
shmmax kernel parameter to be set as the Half of the Physical RAM.
per suppose...if we have 6 GB Ram...cant we increase the SGA size to 5 GB........does it make sense...or any other ....this is the Apps Database with 10g..no other database on this machine....
anywork arounds .....

It depends on your exact Unix OS and if your database is 32 or 64 bit. I would not advise setting SGA to 5GB on a 6 GB machine as you leave almost nothing for the OS, nor PGA/UGA shadow processes. If you have more than like 10 connections, I would set the SGA to no more than 2 or 3 GB, then have a 1 GB pga_aggregate_target.

SHMMAX kernel parameter

Hello -
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

A lot of kernel parameters, including SHMMAX, were replaced in Solaris 10 by resource controls.
you can check
Metalink note 317257.1
and
Installing OCS 10g R1 on Solaris 10
Mike

Maxuproc kernel parameter

Hi,
I need to modify maxuproc kernel parameter in linux (Red hat).
Please assist.
Thanks,

This is a Oracle forum, not a linux forum. Please close that post and open a new one in the correct forum.

Attempt to set a parameter name that does not occur in the SQL: vc_temp_1

I have query view object build on the following sql
select
nvl(u.full_name,e.arabic_first_name||' '||e.arabic_family_name) as empName,
(select sc.general_specialty from ta_scientific_certificate sc where sc.user_id=u.user_id
group by sc.general_specialty
Having Max(sc.qualification_kind)>= All (select max(sc1.qualification_kind) from ta_scientific_certificate sc1 where sc1.user_id=u.user_id group by sc1.qualification_kind ) )as general_specialty
, u.*,ur.default_role,ur.role_1,ur.role_2,ur.role_3,ur.role_4,ur.role_5,ur.role_6,ur.role_7
from ta_user u,employee e,TA_USER_ROLES ur
where u.account_enabled='1' and u.emp_id = e.empl_code(+) and ur.user_id=u.user_id(+)
with this query
( (EMP_ID IS NULL ) ) AND (( ( (DEFAULT_ROLE = 4 ) ) OR ( (DEFAULT_ROLE = 6 ) ) )OR( ( (ROLE_1 = 4 ) ) OR ( (ROLE_1 = 6 ) ) )OR( ( (ROLE_2 = 4 ) ) OR ( (ROLE_2 = 6 ) ) )OR( ( (ROLE_3 = 4 ) ) OR ( (ROLE_3 = 6 ) ) )OR( ( (ROLE_4 = 4 ) ) OR ( (ROLE_4 = 6 ) ) )OR( ( (ROLE_5 = 4 ) ) OR ( (ROLE_5 = 6 ) ) )OR( ( (ROLE_6 = 4 ) ) OR ( (ROLE_6 = 6 ) ) )OR( ( (ROLE_7 = 4 ) ) OR ( (ROLE_7 = 6 ) ) ))
I created search page by dragging this view object from MyApplicationModule->NamedCriteria
but i don't want to show all the fields that their names start with ROLE in my search option so I unChecked the attribute queryalbe
no when I press button search the error Attempt to set a parameter name that does not occur in the SQL: vc_temp_1 is shown
if i press OK on error message and click search again it works
how can I make this error disappear

no I don't think that i have
this is my source ( I will divide it into two parts)
<?xml version="1.0" encoding="windows-1252" ?>
<!DOCTYPE ViewObject SYSTEM "jbo_03_01.dtd">

<ViewObject
xmlns="http://xmlns.oracle.com/bc4j"
Name="SciQualMgtVO"
Version="11.1.2.60.17"
OrderBy='"EMPNAME"'
BindingStyle="OracleName"
CustomQuery="true"
PageIterMode="Full"
UseGlueCode="false">
<DesignTime>
<Attr Name="_isExpertMode" Value="true"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO_LABEL"/>
</SchemaBasedProperties>
</Properties>
<ViewAccessor
Name="LookupAM_IpaCodesVO_GeneralSpecialityVA"
ViewObjectName="ta.common.lookup.IpaCodesVO"
AMUsageName="LookupAM"
ViewInstanceName="IpaCodesVO_GeneralSpecialityDC"
RowLevelBinds="true"/>
<ViewAccessor
Name="CountryVA"
ViewObjectName="ta.common.lookup.CountryVO"
RowLevelBinds="true"/>
<ViewAccessor
Name="DegreeVA"
ViewObjectName="ta.common.lookup.DegreeVO"
RowLevelBinds="true"/>
<ViewAccessor
Name="LookupAM_IpaCodesVO_ScientificQualificationVA"
ViewObjectName="ta.common.lookup.IpaCodesVO"
AMUsageName="LookupAM"
ViewInstanceName="IpaCodesVO_ScientificQualificationDC"
RowLevelBinds="true"/>
<ViewAccessor
Name="YesNoVA"
ViewObjectName="ta.common.constants.YesNoVO"
RowLevelBinds="true"/>
<ViewAccessor
Name="IpaCodesVO_GeneralSpecialityVA"
ViewObjectName="ta.common.lookup.IpaCodesVO"
RowLevelBinds="true">
<ViewCriteriaUsage
Name="IpaCodesVO_GeneralSpecialityCriteria"
FullName="ta.common.lookup.IpaCodesVO.IpaCodesVO_GeneralSpecialityCriteria"/>
</ViewAccessor>
<ViewAccessor
Name="IpaCodesVO_ScientificQualificationVA"
ViewObjectName="ta.common.lookup.IpaCodesVO"
AMUsageName="LookupAM"
ViewInstanceName="IpaCodesVO_ScientificQualificationDC"
RowLevelBinds="true">
<ViewCriteriaUsage
Name="IpaCodesVO_ScientificQualificationCriteria"
FullName="ta.common.lookup.IpaCodesVO.IpaCodesVO_ScientificQualificationCriteria"/>
</ViewAccessor>
<ListBinding
Name="ar_LOV_GeneralSpecialty"
ListVOName="IpaCodesVO_GeneralSpecialityVA"
ListRangeSize="-1"
NullValueFlag="start"
NullValueId="${adfBundle['oracle.javatools.resourcebundle.SystemBundle']['NULL_VALUE_RESID']}"
MRUCount="0">
<AttrArray Name="AttrNames">
<Item Value="GeneralSpecialty"/>
</AttrArray>
<AttrArray Name="ListAttrNames">
<Item Value="Code"/>
</AttrArray>
<AttrArray Name="ListDisplayAttrNames">
<Item Value="ArabicDescription"/>
</AttrArray>
<DisplayCriteria/>
</ListBinding>
<ListBinding
Name="en_LOV_GeneralSpecialty"
ListVOName="IpaCodesVO_GeneralSpecialityVA"
ListRangeSize="-1"
NullValueFlag="start"
NullValueId="${adfBundle['oracle.javatools.resourcebundle.SystemBundle']['NULL_VALUE_RESID']}"
MRUCount="0">
<AttrArray Name="AttrNames">
<Item Value="GeneralSpecialty"/>
</AttrArray>
<AttrArray Name="ListAttrNames">
<Item Value="Code"/>
</AttrArray>
<AttrArray Name="ListDisplayAttrNames">
<Item Value="EnglishDescription"/>
</AttrArray>
<DisplayCriteria/>
</ListBinding>
<ListBinding
Name="ar_male_LOV_Nationality"
ListVOName="CountryVA"
ListRangeSize="-1"
NullValueFlag="start"
NullValueId="${adfBundle['oracle.javatools.resourcebundle.SystemBundle']['NULL_VALUE_RESID']}"
MRUCount="0">
<AttrArray Name="AttrNames">
<Item Value="Nationality"/>
</AttrArray>
<AttrArray Name="ListAttrNames">
<Item Value="CountryCode"/>
</AttrArray>
<AttrArray Name="ListDisplayAttrNames">
<Item Value="MaleNational"/>
</AttrArray>
<DisplayCriteria/>
</ListBinding>
<ListBinding
Name="ar_female_LOV_Nationality"
ListVOName="CountryVA"
ListRangeSize="-1"
NullValueFlag="start"
NullValueId="${adfBundle['oracle.javatools.resourcebundle.SystemBundle']['NULL_VALUE_RESID']}"
MRUCount="0">
<AttrArray Name="AttrNames">
<Item Value="Nationality"/>
</AttrArray>
<AttrArray Name="ListAttrNames">
<Item Value="CountryCode"/>
</AttrArray>
<AttrArray Name="ListDisplayAttrNames">
<Item Value="FemaleNational"/>
</AttrArray>
<DisplayCriteria/>
</ListBinding>
<ListBinding
Name="en_LOV_Nationality"
ListVOName="CountryVA"
ListRangeSize="-1"
NullValueFlag="start"
NullValueId="${adfBundle['oracle.javatools.resourcebundle.SystemBundle']['NULL_VALUE_RESID']}"
MRUCount="0">
<AttrArray Name="AttrNames">
<Item Value="Nationality"/>
</AttrArray>
<AttrArray Name="ListAttrNames">
<Item Value="CountryCode"/>
</AttrArray>
<AttrArray Name="ListDisplayAttrNames">
<Item Value="EnglishNational"/>
</AttrArray>
<DisplayCriteria/>
</ListBinding>
<ListBinding
Name="ar_LOV_ScientificDegree"
ListVOName="IpaCodesVO_ScientificQualificationVA"
ListRangeSize="-1"
NullValueFlag="start"
NullValueId="${adfBundle['oracle.javatools.resourcebundle.SystemBundle']['NULL_VALUE_RESID']}"
MRUCount="0">
<AttrArray Name="AttrNames">
<Item Value="ScientificDegree"/>
</AttrArray>
<AttrArray Name="ListAttrNames">
<Item Value="Code"/>
</AttrArray>
<AttrArray Name="ListDisplayAttrNames">
<Item Value="ArabicDescription"/>
</AttrArray>
<DisplayCriteria/>
</ListBinding>
<ListBinding
Name="en_LOV_ScientificDegree"
ListVOName="IpaCodesVO_ScientificQualificationVA"
ListRangeSize="-1"
NullValueFlag="start"
NullValueId="${adfBundle['oracle.javatools.resourcebundle.SystemBundle']['NULL_VALUE_RESID']}"
MRUCount="0">
<AttrArray Name="AttrNames">
<Item Value="ScientificDegree"/>
</AttrArray>
<AttrArray Name="ListAttrNames">
<Item Value="Code"/>
</AttrArray>
<AttrArray Name="ListDisplayAttrNames">
<Item Value="EnglishDescription"/>
</AttrArray>
<DisplayCriteria/>
</ListBinding>
<ListBinding
Name="en_LOV_ScientificQualification"
ListVOName="DegreeVA"
ListRangeSize="-1"
NullValueFlag="start"
NullValueId="${adfBundle['oracle.javatools.resourcebundle.SystemBundle']['NULL_VALUE_RESID']}"
MRUCount="0">
<AttrArray Name="AttrNames">
<Item Value="ScientificQualification"/>
</AttrArray>
<AttrArray Name="ListAttrNames">
<Item Value="DegreeCode"/>
</AttrArray>
<AttrArray Name="ListDisplayAttrNames">
<Item Value="EnglishName"/>
</AttrArray>
<DisplayCriteria/>
</ListBinding>
<ListBinding
Name="ar_LOV_Country"
ListVOName="CountryVA"
ListRangeSize="-1"
NullValueFlag="start"
NullValueId="${adfBundle['oracle.javatools.resourcebundle.SystemBundle']['NULL_VALUE_RESID']}"
MRUCount="0">
<AttrArray Name="AttrNames">
<Item Value="Country"/>
</AttrArray>
<AttrArray Name="ListAttrNames">
<Item Value="CountryCode"/>
</AttrArray>
<AttrArray Name="ListDisplayAttrNames">
<Item Value="ArabicName"/>
</AttrArray>
<DisplayCriteria/>
</ListBinding>
<ListBinding
Name="en_LOV_Country"
ListVOName="CountryVA"
ListRangeSize="-1"
NullValueFlag="start"
NullValueId="${adfBundle['oracle.javatools.resourcebundle.SystemBundle']['NULL_VALUE_RESID']}"
MRUCount="0">
<AttrArray Name="AttrNames">
<Item Value="Country"/>
</AttrArray>
<AttrArray Name="ListAttrNames">
<Item Value="CountryCode"/>
</AttrArray>
<AttrArray Name="ListDisplayAttrNames">
<Item Value="EnglishName"/>
</AttrArray>
<DisplayCriteria/>
</ListBinding>
<ListBinding
Name="LOV_PastArbitration"
ListVOName="YesNoVA"
ListRangeSize="-1"
NullValueFlag="none"
MRUCount="0">
<AttrArray Name="AttrNames">
<Item Value="PastArbitration"/>
</AttrArray>
<AttrArray Name="ListAttrNames">
<Item Value="Code"/>
</AttrArray>
<AttrArray Name="ListDisplayAttrNames">
<Item Value="Name"/>
</AttrArray>
<DisplayCriteria/>
</ListBinding>
<ListBinding
Name="LOV_PastCooperation"
ListVOName="YesNoVA"
ListRangeSize="-1"
NullValueFlag="none"
MRUCount="0">
<AttrArray Name="AttrNames">
<Item Value="PastCooperation"/>
</AttrArray>
<AttrArray Name="ListAttrNames">
<Item Value="Code"/>
</AttrArray>
<AttrArray Name="ListDisplayAttrNames">
<Item Value="Name"/>
</AttrArray>
<DisplayCriteria/>
</ListBinding>
<ListBinding
Name="LOV_FutureCooperation"
ListVOName="YesNoVA"
ListRangeSize="-1"
NullValueFlag="none"
MRUCount="0">
<AttrArray Name="AttrNames">
<Item Value="FutureCooperation"/>
</AttrArray>
<AttrArray Name="ListAttrNames">
<Item Value="Code"/>
</AttrArray>
<AttrArray Name="ListDisplayAttrNames">
<Item Value="Name"/>
</AttrArray>
<DisplayCriteria/>
</ListBinding>
<ListBinding
Name="ar_LOV_ScientificQualification"
ListVOName="DegreeVA"
ListRangeSize="-1"
NullValueFlag="start"
NullValueId="${adfBundle['oracle.javatools.resourcebundle.SystemBundle']['NULL_VALUE_RESID']}"
MRUCount="0">
<AttrArray Name="AttrNames">
<Item Value="ScientificQualification"/>
</AttrArray>
<AttrArray Name="ListAttrNames">
<Item Value="DegreeCode"/>
</AttrArray>
<AttrArray Name="ListDisplayAttrNames">
<Item Value="ArabicName"/>
</AttrArray>
<DisplayCriteria/>
</ListBinding>
<SQLQuery><![CDATA[select
nvl(u.full_name,e.arabic_first_name||' '||e.arabic_family_name) as empName,
(select sc.general_specialty from ta_scientific_certificate sc where sc.user_id=u.user_id
group by sc.general_specialty
Having Max(sc.qualification_kind)>= All (select max(sc1.qualification_kind) from ta_scientific_certificate sc1 where sc1.user_id=u.user_id group by sc1.qualification_kind ) )as general_specialty
, u.*,ur.default_role,ur.role_1,ur.role_2,ur.role_3,ur.role_4,ur.role_5,ur.role_6,ur.role_7
from ta_user u,employee e,TA_USER_ROLES ur
where u.account_enabled='1' and u.emp_id = e.empl_code(+) and ur.user_id=u.user_id(+)]]></SQLQuery>
<ViewAttribute
Name="Empname"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="255"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="EMPNAME"
Expression="EMPNAME"
SQLType="VARCHAR">
<DesignTime>
<Attr Name="_DisplaySize" Value="50"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.Empname_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="GeneralSpecialty"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="20"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="GENERAL_SPECIALTY"
Expression="GENERAL_SPECIALTY"
SQLType="VARCHAR"
LOVName="ar_LOV_GeneralSpecialty"
LOVFinder="GeneralSpecialtySwitcher">
<DesignTime>
<Attr Name="_DisplaySize" Value="20"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<CONTROLTYPE
Value="choice"/>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.GeneralSpecialty_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="UserId"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Type="java.lang.Integer"
ColumnType="NUMBER"
AliasName="USER_ID"
Expression="USER_ID"
SQLType="INTEGER"/>
<ViewAttribute
Name="FullName"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="50"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="FULL_NAME"
Expression="FULL_NAME"
SQLType="VARCHAR">
<DesignTime>
<Attr Name="_DisplaySize" Value="50"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.FullName_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="FullNameEn"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="50"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="FULL_NAME_EN"
Expression="FULL_NAME_EN"
SQLType="VARCHAR">
<DesignTime>
<Attr Name="_DisplaySize" Value="50"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.FullNameEn_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="TitleSalutation"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="20"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="TITLE_SALUTATION"
Expression="TITLE_SALUTATION"
SQLType="VARCHAR">
<DesignTime>
<Attr Name="_DisplaySize" Value="20"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.TitleSalutation_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="Nationality"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="3"
Scale="0"
Type="java.lang.Integer"
ColumnType="NUMBER"
AliasName="NATIONALITY"
Expression="NATIONALITY"
SQLType="INTEGER"
LOVName="ar_male_LOV_Nationality"
LOVFinder="NationalitySwitcher">
<Properties>
<SchemaBasedProperties>
<CONTROLTYPE
Value="choice"/>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.Nationality_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="Gender"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="1"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="GENDER"
Expression="GENDER"
SQLType="VARCHAR">
<DesignTime>
<Attr Name="_DisplaySize" Value="1"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.Gender_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="Employer"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="100"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="EMPLOYER"
Expression="EMPLOYER"
SQLType="VARCHAR">
<DesignTime>
<Attr Name="_DisplaySize" Value="100"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.Employer_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="CurrentJob"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="50"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="CURRENT_JOB"
Expression="CURRENT_JOB"
SQLType="VARCHAR">
<DesignTime>
<Attr Name="_DisplaySize" Value="50"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.CurrentJob_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="Degree"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="50"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="DEGREE"
Expression="DEGREE"
SQLType="VARCHAR">
<DesignTime>
<Attr Name="_DisplaySize" Value="50"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.Degree_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="Department"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="50"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="DEPARTMENT"
Expression="DEPARTMENT"
SQLType="VARCHAR">
<DesignTime>
<Attr Name="_DisplaySize" Value="50"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.Department_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="ScientificDegree"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="4"
Scale="0"
Type="java.lang.Integer"
ColumnType="NUMBER"
AliasName="SCIENTIFIC_DEGREE"
Expression="SCIENTIFIC_DEGREE"
SQLType="INTEGER"
LOVName="ar_LOV_ScientificDegree"
LOVFinder="ScientificDegreeSwitcher">
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.ScientificDegree_LABEL"/>
<CONTROLTYPE
Value="choice"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="ScientificQualification"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="20"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="SCIENTIFIC_QUALIFICATION"
Expression="SCIENTIFIC_QUALIFICATION"
SQLType="VARCHAR"
LOVName="ar_LOV_ScientificQualification"
LOVFinder="ScientificQualificationSwitcher">
<DesignTime>
<Attr Name="_DisplaySize" Value="20"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.ScientificQualification_LABEL"/>
<CONTROLTYPE
Value="choice"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="Country"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="3"
Scale="0"
Type="java.lang.Integer"
ColumnType="NUMBER"
AliasName="COUNTRY"
Expression="COUNTRY"
SQLType="INTEGER"
LOVName="ar_LOV_Country"
LOVFinder="CountrySwitcher">
<Properties>
<SchemaBasedProperties>
<CONTROLTYPE
Value="choice"/>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.Country_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="City"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="50"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="CITY"
Expression="CITY"
SQLType="VARCHAR">
<DesignTime>
<Attr Name="_DisplaySize" Value="50"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.City_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="ZipCode"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="20"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="ZIP_CODE"
Expression="ZIP_CODE"
SQLType="VARCHAR">
<DesignTime>
<Attr Name="_DisplaySize" Value="20"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.ZipCode_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="POBox"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="20"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="P_O_BOX"
Expression="P_O_BOX"
SQLType="VARCHAR">
<DesignTime>
<Attr Name="_DisplaySize" Value="20"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.POBox_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="CurrentAddress"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="100"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="CURRENT_ADDRESS"
Expression="CURRENT_ADDRESS"
SQLType="VARCHAR">
<DesignTime>
<Attr Name="_DisplaySize" Value="100"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.CurrentAddress_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="WorkPhone"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="50"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="WORK_PHONE"
Expression="WORK_PHONE"
SQLType="VARCHAR">
<DesignTime>
<Attr Name="_DisplaySize" Value="50"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.WorkPhone_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="HomePhone"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="50"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="HOME_PHONE"
Expression="HOME_PHONE"
SQLType="VARCHAR">
<DesignTime>
<Attr Name="_DisplaySize" Value="50"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.HomePhone_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="CellPhone"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="50"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="CELL_PHONE"
Expression="CELL_PHONE"
SQLType="VARCHAR">
<DesignTime>
<Attr Name="_DisplaySize" Value="50"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.CellPhone_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="Fax"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="50"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="FAX"
Expression="FAX"
SQLType="VARCHAR">
<DesignTime>
<Attr Name="_DisplaySize" Value="50"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.Fax_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="PermanentAddress"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="100"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="PERMANENT_ADDRESS"
Expression="PERMANENT_ADDRESS"
SQLType="VARCHAR">
<DesignTime>
<Attr Name="_DisplaySize" Value="100"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.PermanentAddress_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="Email"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="50"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="EMAIL"
Expression="EMAIL"
SQLType="VARCHAR">
<DesignTime>
<Attr Name="_DisplaySize" Value="50"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.Email_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="Password"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="50"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="PASSWORD"
Expression="PASSWORD"
SQLType="VARCHAR">
<DesignTime>
<Attr Name="_DisplaySize" Value="50"/>
</DesignTime>
</ViewAttribute>
<ViewAttribute
Name="PastArbitration"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="1"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="PAST_ARBITRATION"
Expression="PAST_ARBITRATION"
SQLType="VARCHAR"
LOVName="LOV_PastArbitration">
<DesignTime>
<Attr Name="_DisplaySize" Value="1"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<CONTROLTYPE
Value="radio"/>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.PastArbitration_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="PastCooperation"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="1"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="PAST_COOPERATION"
Expression="PAST_COOPERATION"
SQLType="VARCHAR"
LOVName="LOV_PastCooperation">
<DesignTime>
<Attr Name="_DisplaySize" Value="1"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<CONTROLTYPE
Value="radio"/>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.PastCooperation_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="FutureCooperation"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="1"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="FUTURE_COOPERATION"
Expression="FUTURE_COOPERATION"
SQLType="VARCHAR"
LOVName="LOV_FutureCooperation">
<DesignTime>
<Attr Name="_DisplaySize" Value="1"/>
</DesignTime>
<Properties>
<SchemaBasedProperties>
<CONTROLTYPE
Value="radio"/>
<LABEL
ResId="ta.model.ro.SciQualMgtVO.FutureCooperation_LABEL"/>
</SchemaBasedProperties>
</Properties>
</ViewAttribute>
<ViewAttribute
Name="EmpId"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="20"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="EMP_ID"
Expression="EMP_ID"
SQLType="VARCHAR"
IsQueriable="false">
<DesignTime>
<Attr Name="_DisplaySize" Value="20"/>
</DesignTime>
</ViewAttribute>
<ViewAttribute
Name="LoginName"
IsUpdateable="false"
IsPersistent="false"
PrecisionRule="true"
Precision="50"
Type="java.lang.String"
ColumnType="VARCHAR2"
AliasName="LOGIN_NAME"
Expression="LOGIN_NAME"
SQLType="VARCHAR">
<DesignTime>
<Attr Name="_DisplaySize" Value="50"/>
</DesignTime>
</ViewAttribute>

Linux: Kernel Preemption, To Enable Or Not To Enable

The default 2.6.4 Arch Linux kernel .config has 'CONFIG_PREEMPT=y'.
Not everyone has been happy with kernel preemption, however. There is an interesting discussion of this under the title "Linux: Kernel Preemption, To Enable Or Not To Enable at http://kerneltrap.org/node/view/2702
The text of the article is repeated here:
"A recent bug report on the lkml complained of significant performance degradation from enabling CONFIG_PREEMPT, kernel preemption. 2.6 kernel maintainer Andrew Morton [interview] pointed out that such degradation from enabling kernel preemption is not normal, instead likely from it triggering a bug. However, an interesting conversation on the merits of kernel preemption followed.
Andrea Arcangeli, author of the 2.4 virtual memory subsystem, bluntly suggested, "keep preempt turned off always, it's useless. Preempt just wastes cpu with tons of branches in fast paths that should take one cycle instead." Andrew Morton noted, "preempt is overrated." However, he went on to point out that kernel preemption has been very useful in detecting locking bugs. He added, "it has been demonstrated that preempt improves the average latency. But not worst-case, because those paths tend to be under spinlock."
Robert Love [interview] replied directly to Andrea's comments saying, "I think you are really blowing the overhead of kernel preemption out of proportion," going on to agree with Andrew's statements. He further explained:
"I also feel you underestimate the improvements kernel preemption gives. Yes, the absolute worst case latency probably remains because it tends to occur under lock (although, it is now easier to pinpoint that latency and work some magic on the locks). But the variance of the latency goes way down, too. We smooth out the curve. And these are differences that matter."
There is more discussion and feedback with the article (including the original bug report).

I like preemption. it the "democracy" heaven of processes and threads. This post was interesting, but the point is this bug..?
if the bug is found, who can say that preemption in the kernel is not a good idea?
thanks for posting though ;P

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

Dynamic parameter selection from infoview not storing the sql password

We are having the problem of dynamic parameter selection from infoview not storing the sql password as it does for the actual report. We are using Crystal Reports XI Release 2 version 11.5.3.438 (Not sure of SP level, asked in separate thread).
To be more specific.
We have created a report that dynamically populates the parameters of the report by pulling the records from the Informix sql database and allowing selection from there.
In the Central Management Console for the report object we have set as follows:
Process - Database:
Use original database logon information from the report - the sql username and pw etc
Use same database logon as when report is run
Process - Parameters
In selecting a default selection there is the option to put in the sql password, however, this does not stick and clears after update.
As such the end result is that every time this report is run from infoview and a user chooses a parameter (there are 5), crystal goes through some timeout for about a minute or so and then requests the sql password, if a user then selects the next parameter, the same timeout and password dialog appears.
We need the crystal report to handle to the sql password for fetching the parameters as well as for the database section of running the report, however, the parameters insists on the end user always putting the password in.
This is 100% replicatable on our system.
Any way that we can fix this?
Will an update fix this issue? If so could you please advise which one?
Thanks

Hi,
I am having the exact same problem. Any help?
And what does "Use same database logon as when report is run" mean? For me that would be that no prompt is needed for getting values in a dynamic parameter...
Regards
Magnus

Rlim_fd_max Kernel Parameter on Solaris 9

I am trying to install Oracle Application Server 10g Release 2 on Solaris 9. The installation errors out on the "Select Configuration Options" screen with the following error:
"Oracle Application Server 10g Web Cache requires the Kernel Parameter rlim_fd_max to be set to a value of 65536 or higher. Please set rlim_fd_max to 65536 or higher, reboot the machine and restart the installation".
I checked the value of the set rlim_fd_max Kernel Parameter prior to starting the install and it is set to 65536. Does anyone know why I'm getting this error? Thanks in advance!

I was able to get an answer by opening a SR with Metalink. The problem was that even though the rlim_fd_max default on Solaris 9 is 65536, it must be in the /etc/system file. Must be the installer looks at the file to determine that it is set correctly. So, adding set rlim_fd_max=65536 and set rlim_fd_cur=1024 to the /etc/system file fixed the problem.

Kernel Parameter (to do or not to do)

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