Oracle dynamic volume

Can any one please explain the concept of Dynamic Volume and Dynamic Volume Manager concept in ASM

Google and the Oracle ASM documentation are definitely a good start to answer a complex question like concepts of ASM. The information can however be a bit overwhelming if you do not have experience with ASM yet.
In a nutshell, Oracle ADVM extends ASM by providing a system kernel driver that allows the user to create a virtual device using the ACFS filesystem. That virtual device is stored in an ASM diskgroup and can be mounted by the OS like any other device. This can be useful since ASM diskgroups are not directly accessible by the OS and the storage is only accessible through the Oracle ASM instance or the ASMCMD command line utility. The ADVM volume is however not meant to be used for Oracle database files. Keep in mind that ADVM is optional and the necessary kernel driver is version dependent, which requires access to Oracle support to work with current OS releases.

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Use of ADVM (ASM Dynamic Volume Manager)

In oracle 11g 2 There is ADVM (ASM Dynamic Volume manager) is there, If i make 50GB of advm from 1TB of Disk Group. I want to know that 50Gb of Dynamic volume will use oracle db files or not.
exactly I want to place my tablespace files on that voulme.
Edited by: shayad on Sep 22, 2011 10:21 PM

Have a look at Oracle® Database Storage Administrator's Guide.
Scroll down to the diagram that depicts where ADVM resides in the s/w stack.
Why ADVM?
ASM does not only support storage for Oracle databases - but also for any other 3rd party application. The latter is done via ACFS - a cluster file system. This is similar to OCFS and Red Hat's GFS and so on.
A volume manager is used to manage such file system volumes. Linux has a default volume manager called LVM.
ADVM is a volume manager specifically for dealing and integrating with the underlying ASM storage system.
You would usually not use ADVM for ASM diskgroups used by Oracle databases (Oracle databases interface directly with ASM diskgroups and do not need a file system interface).
You can for example use ADVM to manage a cluster file system for a mySQL database - and use custom failover to fail that database over to another node should the current one fail (as the cluster file volume containing the database files will also be available on the other cluster nodes).

ADF 11.1.1.5 - Oracle Dynamic UI Template - Listener

Hi All,
I am facing a strange issue while implementing Oracle Dynamic UI Template.
I have implemented a context Listener to store few data in application scope.
Correspondingly i have made the entry of the Listener in Web.xml. I am getting the following error ADF FACES 60097.
When i remove the entry everything works fine.
No idea whats happening.
Regards
Praveen

Hi All,
Steps to reproduce the problem..
1) Create adf ViewController application
2) Create a jspx with Oracle Dynamic tab Shell as its template.
3) Under Global toolbar facet...create a <af:Menubar> component and bind it to Managed Bean.
4) Create 2 class variables of Type List and TreeModel. Create the accesors for it.
5) Put the debug point on first class variable.
6) Debug the page...when it hits MenuBar or TreeModel.........Error Message is poping up.
Regards
Praveen

ADF 11.1.1.5 - Oracle Dynamic UI Template

Hi All,
I am using Oracle Dynamic UI Template to leverge it's features.
Under the navigation facet i have used tree componet, but i am getting the following error when i tried to debug my VO at the Bolded Point.
private transient TreeModel homemodel = null; public void setHomemodel(TreeModel homemodel)
this.homemodel = homemodel;
public TreeModel getHomemodel() throws IntrospectionException
if (homemodel == null)
homemodel = new ChildPropertyTreeModel(servletContext.getAttribute("homeInstance"), "children");
return homemodel;
Error : Unable to find Source file for package oracle.adfinternal.controller.beans, filename ManagedBeanFactory.java
Regards
Praveen

Hi All,
I couldn't figure the real problem, but the problem gets solved when i create ADF Fusion application.
The same didn't work when i created a general application and added required components.
May be i am missing somethings.
Regards
Praveen

Concept about ASM Dynamic Volume

What is the concept behind ASM Dynamic Volume in coordination with ACFS and how a ADVM manages this ?
Thanks in advance.
Regards,
Sandy

Hi Sandy,
ASM Instance --> ASM diskgroup --> ASM Volumn --> ACFS fs
ADVM driver contols IOs from filesystem to disk level.
+ 11.2.0.3 onwards,database files were supported.
+ with compatible.advm greater than 11.2.0.4 ,you can use ADVM volumn as ext3 /ext4 filesystem.
+ You can use acfs snapshot to backup acfs filesystem .
+ with compatible.advm greater than 11.2.0.4 ,you can convert RW snapshots to RO snapshots.
Also you can take backup of snapshots .
Regards,
Aritra

JSF Page Fragment based on Oracle Dynamic Tabs Shell Template

Hi
JDeveloper 11.1.1.6
Can we create a JSF Page Fragment (jsff) based on an Oracle Dynamic Tabs Shell Template ?
I tried to create this jsff page and added in a bounded taskflow.
In the create jsff wizard, it will allow us to select the Oracle Dynamic Tabs Shell Template, but when trying to use this taskflow in the another page (jspx), it is giving the following exception.
javax.faces.FacesException: javax.el.PropertyNotFoundException: Target Unreachable, 'tabContext' returned null
at com.sun.faces.application.ApplicationImpl.createComponent(ApplicationImpl.java:261)
at javax.faces.webapp.UIComponentELTag.createComponent(UIComponentELTag.java:222)
Basically the reason why I am trying to do like this is that I have to simply drop the taskflow in a page as a region.
The ViewController project code will only be created as an ADF Library Jar File and be used in other projects
(it will not be deployed as a web application (war))
More about the requirement:
I have a BPM Application in which I have 2 ADF ViewController projects, one for only BPM Human Task related UI and another for only ADF functionality.
I am writing a custom BPM Workspace kind of ADF Application and want the UI to be based on the Oracle Dynamic Tab Shell Template.
ADF ViewController project is deployed only as a ADF Library Jar file.
Another advantage I can have is I can test my ADF code within JDeveloper.
(If I create a jspx page based Oracle Dynamic Tab Shell Template in the BPM Human Task Related UI project, I will not be able to run it in JDeveloper and test it.
Otherwise I have to deploy to the SOA environment each time I make a change)
Thanks for any help.
Sameer

Hi,
the dynamic tab shell template can only be used with top level (JSPX) pages (in 12c also with Facelet pages). There is no configuration for templates that would make the JDeveloper IDE to not show the template of the selected page is a fragment.
Frank

Latest Oracle Dynamic Tabs Shell (Dynamic Tabs UI Shell ) Source/JAR

Hi,
Please can any body provide the link where i can get the Latest Oracle Dynamic Tabs Shell (Dynamic Tabs UI Shell ).
Reg,
Brahma B.

Hi John,
Thanks for your reply..
I got the jar for UI Shell from the link you have provided. Here am trying to create my own TabContext by extending the existed one in the jar file.But jar contains the Tabcontext as final so am not able to extend and create my own CustomTabcontext.
While i started working with tabcontext i got the source of UI Shell(first version) and i added some code in Tabcontext itself for achieving some functionality as per the requirement like dirty checking and displaying the dailog like Do you want save changes with some buttons. Now i want to use the latest Ui Shell Tab By including by code as well.
Please can you give any suggestion how can i proceed here.
Reg,
Brahma B.

Oracle and volume- and disk array-based replication?

Dear mighty all,
here is a situation:
Location A - active Oracle database + volume replication software + geocluster software
Location B - standby location, i.e. standby database + volume replication software + geocluster
Oracle is 10g
The size of the database is 500 GB+
The daily updates are roughly 2-3%.
The comm channel between locations can have any reasonable bandwidth, however the jitter and latency cannot be guaranteed (i.e. no synchronous replication).
This is a matter of protecting against a disaster (such as a complete destruction of Location A).
The task is to make sure that Location B has the up-to-date data (RPO is 8 hours) and Oracle database can be started automatcially without any manual intervention. (I.e. cluster administrator pushes the button and the rest is done without human intervention).
Here is what I am thinking of:
1) volume replication software usually observes the atomicity on the disk block level. I.e. it is impossible that the data block being updated on the volume in Location A is updated in location B incompletely.
2) When the database in Location A completes a transaction it writes data to the disk thus initiating the series of disk block updates being sent to Location B.
3) From the database point of view, the transaction is completed, database files are updated.
4) However there is a slim chance of Location A being destroyed while:
* the volume replication software has started pushing through to Location B the updated disk blocks representing the completed transaction
* but it did not finish transmitting the whole lot of disk updates (boom! the asteroid fell on Location A)
* and volume replicator in Location B cannot roll back the disk updates since volume replicator does not know of the database transaction
5) Volume replicator atomicity is disk data block while Oracle's atomictity is transaction (i.e. there cannot be a half-transaction applied)
6) Thus, when we start Oracle in Location B, we will get inconsistent database, since the last transaction was transferred to Location B incompletely
7) Sure that there is a way to fix this using various DBA tools, but that defies the whole purpose of automatic start
So, my question is:
1) Is volume- or disk array-based replication not a good idea in this case at all?
2) or is there a way to nonetheless ensure the consistency of the database (say start it every time in the recovery mode)?
3) Or should I dump the idea of replicating Oracle with volume replication and switch to DataGuard? (The cluster software can handle DataGuard).
thanks a million for your answers, ye mighty all!

Hi,
this is not a "typical" question what is easy to discuss in a forum.
Just some hints:
1. using volume replication won't help you against logical or physical corruption
2. RPO of 8 hours ? Sounds a lot regarding a change rate of 10-15 GB a day.
3. 100% Automation is normally not a good idea in a database disaster scenario
( a false disaster detection can end in a real disaster!) I've already seen too much databases which had been totally corrupted by a false switch.

Common Toolbar for Oracle Dynamic Tabs Shell

Hi All,
I am trying to develop an application with Oracle Dynamic Tabs Shell, which contains a common toolbar as given below:
http://www.cijoint.fr/cj201008/cij0mTgi6V.jpg
This Common toolbar contains common functionalities like save, print etc. When user clicks on these buttons, i want to activate similar actions in currently selected tab. Toolbar is not part of tabbed region, it is under innerToolbar facet which is part of main page. I am looking forward for general solution parent page activating events under currently selected tab region.
Can anybody suggest me which is the better way to implement it.
Many Thanks,
Santhosh

Hi Pramod,
Have you tried setting the Transaction attributes of your task-flow? Open up your task flow definition then go to Overview Tab. Try changing the appropriate attributes like setting the transaction as "Always Begin New Transaction" and/or unchecking the "Share data controls with calling task- flow". Try to mix settings and find the one that suit your needs.
Regards,
Pino

Oracle dynamic tab ui shell template : the rest of page missing

im new in adf
hi;
im using oracle dynamic tab shell which i download it from oracle site.
my problem is
i have a page fragment ( two.jsff) and i drag and drop from data controls vo as adf amaster table ,detail table
when i run the application first.jspx and click the fisrt link the page show me only the fist table , i can not see the second table Unless change the the zoom level in the internet explorer( to make application appearance smaller)
how to solve this problem.
i drag and drop vo directly to the panelGroupLayout , should i use panelstretch?
- some one told me the problem in computer screen resolution ( he say when your create an application ( jdeveloper ) with high screen resolution then take it to other computer and edite the page you will face this problem) is it true.
thanks

Hi User,
you need to look for customizing the UI shell template.
here are few articles may help you to customize the default UI shell template.
Techie gossip: ADF talk: customize the logo inside Dynamic Tab UI Shell
Andrejus Baranovskis's Blog: Building Custom UI Shell with ADF 11g R2

Flat file to Oracle: Dynamic flat file name

Hi,
I am doing a transformation from flat file to oracle.
At one place there is requirement like flat file name is dynamic.
*eg. D:\ Flat DB\ Sample<Date>.txt
examples may be like Sample09012012,Sample08012012 *
As in physical schema we specify name of file is there any way by which we can specify dynamic file name.
as stated above.
Any help and suggestions would be appreciated.

Hi,
Yes you can specify a variable in the file name ( the resource name filed) .
You need to refresh the variable in a package and then use the interface to pick data from the file .
Thanks,
Sutirtha

Whether timestamp types are supported in oracle dynamic sql?

Oracle has two dynamic sql models. The old and the new ANSI model. I wish to know where and how the timestamp oracle data types are supported.
I am having trouble setting the timestamp data through pro*c using old dynamic sql. I tried to set it to raw 11 bytes and use type 187 (timestamp) and it segfaults! I try now to set it to string type and oracle says invalid month! I tried even using nls_timestamp_format setting but no luck. Obviously some thing is amiss.
Can some body help me?
I need this info rather urgently.
Thanks.

Yes it is possible
TO_DATE(:variable,'FORMAT') in dynamic SQL

Zfs and Oracle raw volumes

This is the way I configured raw volumes to be used by Oracle 9:
# zpool create -f pool146gb c0t1d0
# zfs create -V 500mb pool146gb/system.dbf
# cd /dev/zvol/rdsk/pool146gb
# ls -l system.dbf
lrwxrwxrwx 1 root root 40 Oct 4 19:26 system.dbf -> ../../../../devices/pseudo/zfs@0:16c,raw
# chown oracle:oinstall ../../../../devices/pseudo/zfs@0:16c,raw
# zfs list -o name,volsize| grep system.dbf
pool146gb/system.dbf 500M
Resizing system.dbf to 600 MB
# zfs set volsize=600mb pool146gb/system.dbf
# zfs list -o name,volsize| grep system.dbf
pool146gb/system.dbf 600M
My question:
Is this a good approach for creating Oracle tablespaces in raw volumes?

Marcus Ruehmann (guest) wrote:
: Hi,
: did anybody successfully test Stephen Tweedy3s raw device
against
: Oracle? I testet also against Sybase but could not get it to
run.
: Stephen checked straces and stuff but there seems to be no
error!
: Look at ftp.uk.linux.org/pub/linux/sct/fs
: This patch is against Linux 2.2.9.
: Please people, test it and tell me if it works for you
: Cheers
: Marcus
Hi Marcis,
I tested raw device with Oracle but in AIX with Oracle 7.3 and
it worked perfectly. While I'm waiting for Oracle8i on Linux and
would test it with raw device, I don't think there would be too
much different.
Brdgs,
Quoc Trung
null

How can i convert dynamic volume to basic volume of hard disk

Seriel no.-{Removed for privacy}
Product no.-QG478PA#ACJ
Product name-HP pavilion dv6 notebook pc
OS-windows 7 64 bit

i am also did this ...everything you told me i did that ...
ok i m tell you what exactly had been done.......
i have hp pavilion dv6 with licenced copy of windows 7 homme basic...i didn't like win 7 home basic so i format this with windows 7 ultimate ..at the formating time this problem occur ""BOOT MANAGER MISSING"" than i used another bootable of win 7 ultimate that was correct than after complete installation i created new partions from windows disk managment at that this problem was ocured of dynamic partions........when i create new simple volume,all basic partitions become dynamic automatically......
after this i delete partitions from disk managment than again boot the system for making partition as basic with windows bootable but i can't di this means making new partion from booting process........the option for making new partion appears deactivated at booting time with correct bootable cd........

WMI class to list dynamic volume groups

Hi,
All the WMI classes list only basic Volume Groups and not the dynamic groups.
Even the disk management does not list dynamic groups.
Why is this?
and is there any way WMI can list these dynamic groups ?
Dynamic groups basic info:
http://technet.microsoft.com/en-us/library/cc737048%28v=ws.10%29.aspx
Thanks
Randeep

We canaslo use this:
DISKPART> list disk
Disk ### Status Size Free
Dyn Gpt
Disk 0 Online 465 GB 0 B *
¯\_(ツ)_/¯

Oracle dynamic volume

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