Storing Application Data - Cross Platform

Dear All,
I have a question regarding the suitable location to store the data/files generated by my application. Here are some of the possibilities I found, but they doesn't seem to be suitable:
1. I can store the files under the application folder (where the application is installed) in C:/ProgramFiles using System.getProperty("user.dir"). This option seems to work fine with most of the OS. However this is not suitable for windows vista as I am unable to modify the files (because of virtual store).
2. I can store files under the user home directory (ex: C:\Users\user1) using ystem.getProperty("user.home"). This is not a good solution because I want my files to be accessed by all the users of the system.
3. Using System.getenv("ALLUSERSPROFILE") i can store files in a location which is accessible to all the users i.e. C:\ProgramData. However this doesn't seem to work in Linux, as it is returning null.
So what is the best location to store application data, which is accessible to all the users of the system?
Thanks in advance

Thank u piet....
By data i mean projects and their respective files (xml) created using the application. So Preferences API won't be suitable to store.
Allowing user to select the location where he/she wants to store the application data is not viable. For example, if the user chooses c:/programfiles then the problem with vista virtual store will arise, or if the user chooses user's home directory C:\Users\user1, then other users can't access the application data.

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Common Practice For Storing Application Data Files

During my application development targeting for XP and Linux time, I will store my application data files (Files where user may create, modify, rename, delete...) same path as my application directory. For instance, if my application is installed in :-
C:\Program Files\MyApp\MyApp.jar
All my application data files will be located in
C:\Program Files\MyApp\Config\ directory.
This works quite well until Vista introduce UAC. Vista will not allow write opration to C:\Program Files\MyApp\Config\ folder (Config folder is being created during installer execution). However, to support legacy application, Vista use a workaround (Virtualization) for application to write. For example, MyApp.jar want to perform write on
Real path :-
C:\Program Files\MyApp\Config
Vista will redirect it to :-
Virtual path
C:\Users\<account>\AppData\Local\VirtualStore\Program Files\MyApp\Config
Please refer to the links for more detail
[http://www.codeproject.com/KB/security/acl_common_data.aspx?display=Print]
[http://www.codeproject.com/KB/vista-security/MakingAppsUACAware.aspx]
However, this introduce several additional problems [http://support.microsoft.com/kb/927387]
May I know what is the common practice for storing an application data files? The below are my several thoughts
(1) Writing to
* Windows XP - %systemdrive%\Documents and Settings\All Users\Application Data
* Windows Vista - %systemdrive%\ProgramData
* Windows 2000 - %systemdrive%\Documents and Settings\All Users\Application Data
* Windows Server 2003 - %systemdrive%\Documents and Settings\All Users\Application Data
* Windows 98 - %systemdrive%\Windows\All Users\ Application Data
which we may retrieve through "CommonApplicationData", using the API function SHGetFolderPath. However, how can we do that in Java? How to make compatible with Linux?
(2) Writing to user home directory through "user.home" properties. Create a folder .MyApp and write the application data on it.
Any input and suggestion are welcomed.
Thanks!
cheok

>
...I will store my application data files (Files where user may create, modify, rename, delete...) same path as my application directory. >See [Store Application Settings and Components|http://sdnshare.sun.com/view.jsp?id=2305] for code that will put the required parts in a suitable sub-dir of user.home.

Real Application Testing Cross-Platform upgradation

Hi,
We are planning to migrate Production database from Oracle 10.2.0.5 on Windows 64bit platform to Oracle 11.2.0.2 on RHEL 64bit platform.
My doubt is whether we can perform load capture on Oracle 10.2.0.5 Single instance database on Windows 64bit platform and replay it on Oracle 11.2.0.2 RAC database on RHEL 64bit platform.

Bhavi Savla wrote:
Hi,
We are planning to migrate Production database from Oracle 10.2.0.5 on Windows 64bit platform to Oracle 11.2.0.2 on RHEL 64bit platform.
My doubt is whether we can perform load capture on Oracle 10.2.0.5 Single instance database on Windows 64bit platform and replay it on Oracle 11.2.0.2 RAC database on RHEL 64bit platform.yes you can please refer MOS notes for more info.
Master Note For Oracle Database Upgrades and Migrations [ID 1152016.1]
Migration Of An Oracle Database Across OS Platforms [ID 733205.1]

I just upgraded to mountain lion osx and now my applications are crossed out and out of date. they will not run. how do i fix this?

I just upgraded to mountain lion osx and now my applications are crossed out and out of date. they will not run. how do i fix this?

Here is a recent post I assembled for a similar question:
Unfortunately you got caught up in the minor miracle of Rosetta. Originally licensed by Apple when it migrated from the PowerPC CPU platform that it had used from the mid-1990's until the Intel CPU platform in 2006, Rosetta allowed Mac users to continue to use their library of PPC software transparently in emulation.
However, Apple's license to continue to use this technology expired with new releases of OS X commencing with Lion (and now Mountain Lion). While educational efforts have been made over the last 6 years, the fact is that Rosetta was SO successful that many users were caught unaware UNTIL they upgraded to Lion or Mountain Lion.
Workarounds:
1. If your Mac will support it, restore OS X Snow Leopard;
2. If your Mac will support it, partition your hard drive or add an external hard drive and install Snow Leopard into it and use the "dual-boot" method to choose between your PowerPC software or Lion/Mt. Lion;
3. Upgrade your software to Intel compatible versions if they are available, or find alternative software that will open, modify and save your data files;
3. Install Snow Leopard (with Rosetta) into Parallels:
[click on images to enlarge]
Full Snow Leopard installation instructions here:
http://forums.macrumors.com/showthread.php?t=1365439
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Images stored in Application Data folder are not visible in HTML Page generated by AIR Application

Hi Programmers,
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I tried changing the directory as following in java class:
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Files stored in application data cache

Recently my weekly virus scans have taken longer and longer. The number of files scanned increased by tens of thousands every week. A carefully crafted search shows that files in the directory C:/Documents and Settings/userxxx/application data/Mozilla/Profiles/....../Cache/ is the probable source of all the now hundreds of thousands of files that my virus scan is encountering. Does anyone know which Mozilla application these files are being created by? Are they important or just temporary 'work' files?

The firefox cache may be cleared and should not have any ill effects, although some websites may then take longer to load. If you decide to clear the cache, or part of it see:
* [[how to clear the cache]]
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Having a firefox cache increasing by tens of thousands of files every week sounds rather unusual to say the least, and I may begin to think about trying to check whether malware is the cause.
* see [[is my firefox problem a result of malware]]

SQL Developer 2.1 removes the stored password in SVN Application Data

Hello everybody
SQL Developer is a great Tool and I use it together with the SVN Versioning System. I also use TortoiseSVN on my Windows XP Operating System, that's why I found out that either the SQL Developer or its SVN Extension has a bug.
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I would be happy to get some feedback from your point of view. Are there other people who have the same problem?
I turned already to google, but I haven't found a hint that it could be something you can configure in some properties.
Thanks in advance,
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In the meantime I found the solution:
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store-auth-creds = no
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It looks like the SVN Extension in SQL Developer has different Default Values for the properties than TortoiseSVN has.

Data Movement in Cross Platform

Hi,
Greeting!..
My scenario is
Host A - Hp-Unix
Host B - Window 2003 Server
1. Is the datapump dump file which is created in Host A can be import in Host B? is it so please forward the steps
2. from Host A to Host B in need to transfer the data incrementally & regularly. How can i make this as automatic?
Thanks in Advance
Baalaji V

Hi Balaji,
Yes you can import dump on cross-platform but you may need to check syntax in the Database Utilities guide available on Oracle Technology network. Here is direct lik http://www.oracle.com/pls/db112/to_toc?pathname=server.112%2Fe16536%2Ftoc.htm&remark=portal+%28Books%29
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http://www.oraxperts.com

Cross platform migration from hp unix to sun

Hi
recently we have done cross platform migration from hp unix to sun (10g R2 RAC +ASM). It was a challenging experience to complete the migration in 8 hours downtime for a database of about 2 TB.
I would like to share the experience , so that it would be hepfull to others and i would learn more new techniques for improvement .
source environment:
HP-UX -ITANIUM - 2 node RAC - 10g R2 - Oracle clusterware - ASM - Heavily loaded all the time .
Destination Env:
Sun solaris 10 - 2 node RAC - 10g R2 - Oracle Clusterware - ASM
Total Downtime available : 6 hours.
Steps followed
1. snapshot backup of source database on a intermediate HP-Unix box. (stage area)
2. recover the database and start the rman image backup on to disk in stage area.
3. mount this filesystem locally (Veritas ) on to one of the node in the destination env.
4. Mount this filesystem as NFS on second node using a cross cable between both of them (we can use interconnect VLAN also here)
5. Keep applying the archive logs from source env till the downtime .
5. startup nomount the database , change the datafile names from ASM to RMAN image copy files and mount.
6. start rman convert statements and pump into the already exisitng ASM nodes with parallel sessions as much as possible (with 35 sets (513 datafiles) we were able to pump 2 TB data in 4.5 Hrs) - only system and undo datafiles need a convert statements (platform migration ) others would need a file system to ASM conversion only.
7. alter database open resetlogs in the destination environment.
8. create services manually and start the application.
we were given very less time to decide upon this stategy , By gods grace we were able to complete it .
I got a doubt while we are chalking out this plan .
can we connect to ASM instance remotely and pump data from one ASM to another ASM. It seems it is not possible , just a wild thought.
Let me know if you see any more improvements in this.
Thanks
Naveen samala

can we connect to ASM instance remotely and pump data from one ASM to another ASM. It seems it is not possible , just a wild thought.No. Thats not possible.

How can we move the 'application data\apple computers' folder to another location

We use roaming profiles and the Application Data folder is stored on a network drive with restricted space (500MB). This has not been a problem in the past but since we've been rolling out iPad's & iPhones, this restriction is becoming a problem as iTunes download's ios updates and stores device backups in 'application data\apple computers' folder (and not in the media library).
Does anyone know how we can move this 'application data\apple computers' folder to another location or force iTunes to store the downloads/updates in the media library (which can be moved)?
Thanks very much in advance for any help.

Move the iTunes Library elsewhere, launch iTunes with the Shift key held down, and point it there.
(60614)

Web Application - Data caching of enterprise data

Sorry in advance if this is off-topic but I can't find anywhere else to post this type of question.
I am looking for information/suggestions such as books, technology or design methodology for my enterprise web applications. These sites are currently up and functional using only JSP, servlets and regular Java classes stored in a web application session to provide data caching and access. We are using Weblogic Server 6.1 running on an AIX Unix system at this time. I'm not sure that this is the best design architecture as our web sessions are getting too large but I can't think of any other Java technology to use and I need some help. Here's an overview of our environment and our needs.
Our core data is held in a mainframe based IMS system. Some DB2 is also used. Access to this data is through IMS COBOL transactions which we can execute with IMS Connect. We also use some JDBC to get to the DB2 tables directly where available.
Some overall application data is cached when the web application is deployed. We use singleton classes which are created and refreshed at deployment and they then refresh themselves from the sources every 24 hours.
Each time a user logs in we execute several IMS transactions and JDBC calls to cache user specific data in regular Java classes which are then simply placed in the users web session where we access them from JSP, servlets and other Java classes. The fields in these Java classes range from any type of primitive field to TreeMaps of other Java classes. As the data is cached it is sorted and other fields are calculated and stored in these classes. As the user progresses through the system we then may have to do several other IMS transaction and JDBC calls to collect other types of data. All of this is then also added to the users session. Most of this in inquiry. We do allow transactions but those are built from user input and data already cached and are then we just execute the IMS transactions with the input.
As our application has grown these Java classes have gotten larger and larger. And since these are simply stored in server memory in the web sessions then these are also getting huge. I'm concerned that this is not the best way for this application to be architected. Is there something else we should be doign? I simply don't understand how Entity Java Beans could be used but then again I don't know much about them. I wouldn't think that caching the data to a local database and accessing it from there would be any more efficient and would probably just slow down the system from all the I/O.
Any help or direction would be greatly appreciated.

The best book you can buy is 'Professional Java Server Programming, j2ee edition' by Wrox. It is by far the best reference I've used. Another quick reference consideration might be the j2ee book provided by codenotes... its quick and to the point.

Need Help in Cross Platform Migration

Hi Gurus,
can you please tell me best way to do Corss Platform Migration with minimum down time and we are planning to do from AIX TO HP-UX.
oracle version is 10g
and can we do the data sync using streems if it is can you give the steps to configure streems in cross platform.
Thanks in advance.

High Availability Customer Case Studies, Presentations, Profiles, Analyst Reports, and Press Releases
[http://www.oracle.com/technology/deploy/availability/htdocs/HA_CaseStudies.html?_template=/ocom/print]
Check under Transportable Tablespace at the bottom
[Multi Terabyte Database Migration|http://www.oracle.com/technology/deploy/availability/pdf/TheHartfordProfile_XTTS.pdf]
HTH
Anantha

External Hard Drive won't appear on PC (want cross platform)

I have an external USB Hard Drive. I formatted it using the Disk Utility, OS Format and Journaling. Did a small partition in case I needed a system boot drive. Now my sis needed to backup her laptop (Dell laptop), but the drive won't appear in My Computer, it recognizes there is a USB device on the lower task bar, but no drive anywhere.
Do I have to reformat? what steps do I need to make this USB drive cross-platform friendly?
Paul

Hi, Paul.
You may not want to reformat the drive as FAT-32 since there is a limit on the size of the partition, the maximum file size, and other issues, especially if her Dell's drive is formatted as NTFS (FAT-32 does not support NTFS extended attributes). FAT-32 is unsuitable for backing-up Mac OS X volumes as it cannot preserve the extended attributes (permissions, etc.) employed by Mac OS X.
It's really best if you each have your own external hard drive for backup, as part of implementing a comprehensive Backup and Recovery solution, such as I use and detail in my "Backup and Recovery" FAQ. You also don't want one person inadvertently writing over another person's backups, which could happen if one is not careful. Furthermore, it is often easiest for recovery.
How one handles backup in cross-platform environments is tricky and depends on the native formats employed by the different computers involved, and whether backup will be performed over a network or by directly connecting backup drives to the computers one is backing up.
To enable her Dell to use the Mac-formatted drive, install Mediafour's MacDrive for Windows on the PC. MacDrive for Windows is probably the state-of-the-art application for enabling you to use Mac-formatted disks and hard drives on Windows-based PCs.
Good luck!
Dr. Smoke
Author: Troubleshooting Mac® OS X
Note: The information provided in the link(s) above is freely available. However, because I own The X Lab™, a commercial Web site to which some of these links point, the Apple Discussions Terms of Use require I include the following disclosure statement with this post:
I may receive some form of compensation, financial or otherwise, from my recommendation or link.

PDF form storing old data

Hello, I am new to the forum and was hoping someone here would be able to help me with an issue I have run into or help me find someone who could.
I was recently working on a security assessment of a website and I found a PDF document for an employement application that appears to store old data within the code of the document. To explain further:
- I found the PDF form document on the website. When downloaded and opened with Reader it appears blank. The document is avaiable to download and then you are directed to email it to HR, so there is no online submission on the website.
- When opened in a text editor it displays mostly encoded text and numbers but there is portion of the document with lines that correspond to the fields in the document and contain information from previous instances of the document that has been filled out.
Has anyone encountered this before? If yes are there any remediations for a PDF form storing unwanted data within the code of the document?
Thanks in advance and sorry if I have posted this in the wrong location.

Filling in online forms should never allow the form to be saved back to the website. Usually such a form (or any online document) would go to the user's browser's temp folder, and be saved in there. I don't know how it was possible that user data got back onto the web server form (unless it was originally uploaded like that).
What I would do if I encountered such a situation
upload the clean, empty form
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see if the original form has been altered in any way

Any cross platform chat app (eg. Whatsapp) for Ash...

Hello,
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Thanks.
Solved!
Go to Solution.

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Storing Application Data - Cross Platform

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