Advice needed... Storing data

Hi,
I have been given a new project at uni and I need to manage bookings for a motel, which is fine, except I don't know how I should go about storing the information, Room Configuration, Customers, and Days(Bookings).
I have being programming in Java for awhile now, but I have only really saved data to text files.
I thought about having 3 or 4 text files with database keys and linking the text files with my program, to display information... however I have to ask, is there a better way out there with the use of a database file type that would allow me to manage easily through my program or something?
I know of mySQL but its been a long time and don't remember much about it, can I use it client side? (as an extension of my program or something?)
Thanks for your opinions,
Miik3h

If your project is for an assignment - as opposed to an actual commercial application, then I recommend that you either use what you know - text files, Lists, Sets, and Maps; or a simple relational database - either Derby from Apache (also available from IBM as Cloudscape), or HSQLDB (at Sourceforge).
The other alternatives - MySQL, PostgreSQL, etc, are more capable (which you don't need) but have a greater learning curve, requiring that you also learn JDBC technology to connect to the DB.
The amount of effort and time needed to implement any of my 3 recommendtions is, in my opinion, about the same. You don't say how complicated the app will be, so it's hard to say which one will fit best. The file solution would handle the simple cases, while either of the RDBMS's can handle the simple as well as the complex. It's a matter of what you prefer.
All of the solutions will work as a client application - ie, a server isn't required.

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Advice needed - Storing images

Hello all,
I'm developing e-commerce application, and I have dilema where to store product photographs.
When I started learning struts and servlets/jsp, I stored photographs as BLOB in MySQL database, and hadnt any problems to do it this way.
For administrator purposes, I created admin interface. Administrator was able to insert new products into database, and in that case inserting product photos was implemented using form file, uploading photos directly from his local computer as BLOB object.
On the other hand, this system will probably damage the performance of web appliacation, so the idea I like more at the moment is using hypelinks.
My problem with hypelinks is - where to store photos? Photographs probably have to be stored somewhere on server, but in that case I would have to give some privilegies to administrator of web site and to allow him to access the server, and I dont want to do that.
Am I missing something here?
Thanks in advance,
Djordje

Thanks for your response.
I don't think it has anything to do with '/' or '\' though.
My directories structure is following:
Web Pages
- META-INF
- WEB-INF
- images - this is the destination I would like to store my images
- etc, etc
In my NetBeans project I have following folders:
'build', 'conf', 'dist', 'nbproject', 'src', 'test' and 'web',
and after execution of my upload action, images are stored in 'build' folders, which has following structure:
-build
--web
---META-INF
---WEB-INF
---images
---etc, etc
Obviously I would like to store them in my 'web' folder, but just cant get there.
I hope this clears the picture about my problem bit more.

Since updating my phone 4s with 6.1.1 I tunes still sees my phone as a new phone despite having successfully restored it with my old stored data; means I cannot progress to the next stage i.e. I cannot synch to my Mac

Since updating my phone 4s with 6.1.1 I tunes still sees my phone as a new phone despite having successfully restored it with my old stored data; ( I have done this twice) -means I cannot progress to the next stage i.e. I cannot synch to my Mac. My phone memory of 13GB was almost full before I updated and I get an error message when I try to restore with my original back up that there is insufficient memory for t his;it does restore ok with other back ups it offers which leave 1.5GB free on the phone but then I get the problem as above-I Tunes cannot get out of seeing my phone as a new phone and wanting me to restore again ie a loop and I cannot progress to the synch page
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You need to transfer Old iTunes library from Windows to new iMac
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SAP paging overflow when storing data in the ABAP/4 memory.

I am trying to create a data source in BI7.0 in the Datawarehousing Workbench. But along the process when i need to select a view i get an error detailed in the following error file extract: Please go through and assist.
untime Errors MEMORY_NO_MORE_PAGING
Date and Time 06.06.2009 14:21:35
Short text
SAP paging overflow when storing data in the ABAP/4 memory.
What happened?
The current program requested storage space from the SAP paging area,
but this request could not be fulfilled.
of this area in the SAP system profile.
What can you do?
Note which actions and input led to the error.
For further help in handling the problem, contact your SAP administrator
You can use the ABAP dump analysis transaction ST22 to view and manage
termination messages, in particular for long term reference.
Error analysis
The ABAP/4 runtime system and the ABAP/4 compiler use a common
interface to store different types of data in different parts of
the SAP paging area. This data includes the
ABAP/4 memory (EXPORT TO MEMORY), the SUBMIT REPORT parameters,
CALL DIALOG and CALL TRANSACTION USING, as well as internally defined
macros (specified with DEFINE).
To store further data in the SAP paging area, you attempted to
allocate a new SAP paging block, but no more blocks were
available.
When the SAP paging overflow occurred, the ABAP/4 memory contained
entries for 20 of different IDs.
Please note:
To facilitate error handling, the ABAP/4 memory was
deleted.
How to correct the error
The amount of storage space (in bytes) filled at termination time was:
Roll area...................... 8176
Extended memory (EM)........... 13587912
Assigned memory (HEAP)......... 0
Short area..................... " "
Paging area.................... 40960
Maximum address space.......... " "
By calling Transaction SM04 and choosing 'Goto' -> 'Block list',
you can display an overview of the current roll and paging memory
levels resulting from active users and their transactions. Try to
decide from this whether another program requires a lot of memory
space (perhaps too much).
The system log contains more detailed information about the
termination. Check for any unwanted recursion.
Determine whether the error also occurs with small volumes of
data. Check the profile (parameter "rdisp/PG_MAXFS", see
Installation Guidelines).
Is the disk or the file system that contains the paging file
full to the extent that it cannot be increased, although it has
not yet reached the size defined in the profile? Is the
operating system configured to accommodate files of such a
size?
The ABAP processor stores different types of data in the SAP
paging area. These include:
(1) Data clusters (EXPORT ... TO MEMORY ...)
(2) Parameters for calling programs (SUBMIT REPORT ...),
Dialog modules (CALL DIALOG ...) and transactions
(CALL TRANSACTION USING ...)
(3) Internally defined program macros (DEFINE ...)
Accordingly, you should check the relevant statements in a program
that results in an overflow of the SAP paging area.
It is critical when many internal tables, possibly with
different IDs, are written to memory (EXPORT).
If the error occures in a non-modified SAP program, you may be able to
find an interim solution in an SAP Note.
If you have access to SAP Notes, carry out a search with the following
keywords:
"MEMORY_NO_MORE_PAGING" " "
"SAPLWDTM" or "LWDTMU20"
"TABC_ACTIVATE_AND_UPDATE"
If you cannot solve the problem yourself and want to send an error
notification to SAP, include the following information:
1. The description of the current problem (short dump)
To save the description, choose "System->List->Save->Local File
(Unconverted)".
2. Corresponding system log
Display the system log by calling transaction SM21.
Restrict the time interval to 10 minutes before and five minutes
after the short dump. Then choose "System->List->Save->Local File
(Unconverted)".
3. If the problem occurs in a problem of your own or a modified SAP
program: The source code of the program
In the editor, choose "Utilities->More
Utilities->Upload/Download->Download".
4. Details about the conditions under which the error occurred or which
actions and input led to the error.

Hi Huggins,
Maintenance of the Paging File is owned by your basis team.
They should increase this in order for your transaction to process successfully.
Just for your reference, in case the OS used is windows server 2003, paging file value can be checked through;
Right click in the My Computer>properties.
Then go to Advance tab;
Then there should be a performance section, click the settings
Then Advance tab again. The paging file can be seen from there.
(and can be adjusted from there also)
The value of the paging file in general will be dependent with the available RAM from the hardware.
Hope this helps. Thanks a lot.
- Jeff

IBook and external HDD - Advice needed

Hi all,
I am using an old G3 white dual USB iBook with OS X 10.2.8. The backlight cable broke a year ago, and I finally worked up the nerve to replace it myself...and while I'm in there, I'd like to drop in a new 120GB Seagate hard drive to replace the practically full 30GB in there now. Now before I do all this, I really want to back everything up to an external hard disk.
I have an old Western Digital Caviar 60GB disk that I put into an external enclosure (an AcomData 509), but so far I've had no luck getting Disk Utility to reformat it. Disk Utility sees the hardware and reports it as "0,00 Bytes DMI" and gives the correct model number for the disk, however DU simply won't reformat.
When I tried to put an Apple Extended partition on there, it popped up a progress window saying "Setting up partition map" with a blue candy cane progress bar and then just sits there doing nothing. CPU usage doesn't go up, the drive light never flickers, and right clicking DU in the Dock never reports that the app isn't responding. If I try to quit, it just beeps and won't quit. The console has the following lines:
May 19 13:00:18 c<edited IP address out> kextd[507]: a link/load error occured for kernel extension (null)
/System/Library/Filesystems/msdos.fs/msdos.util: device safe_read error @ 0, Device not configured
The same thing happens even if the option to zero the disk is selected. In either case, DU must be force quit.
So, with no success there, I decided to try to format it as an MS-DOS File System. Clicking Erase makes a progress window with the candy cane bar very quickly pop up and then disappear with no indication that anything happened at all. The console had the following lines after that:
/System/Library/Filesystems/msdos.fs/msdos.util: device safe_read error @ 0, Device not configured
/sbin/newfs_msdos: warning: /dev/disk2 is not a character device
/sbin/newfs_msdos: meta data exceeds file system size
If I select the zero disk option, the progress window pops up flashing "Remounting Volume" then "Writing zeros" and then DU abruptly crashes. If anyone needs the crashdump log, I'll be happy to post it, but it is very long.
Typing "diskutil list" in the terminal shows:
/dev/disk2
#: type name size identifier
0: *0.0 B disk2
1: 0.0 B disk2
Typing "diskutil info /dev/disk2" reports
Device Node: /dev/disk2
Device Identifier: disk2
Mount Point:
Volume Name:
can't open: /dev/disk2 (Permission denied)
File System:
Partition Type:
Media Type: Generic
Protocol: USB
Total Size: 0.0 B
Free Space: 0.0 B
Read Only: No
Ejectable: No
I thought it might be interesting to try the eraseDisk for diskutil, but here's what happened:
sudo diskutil eraseDisk HFS+ BackupDisk /dev/disk2
Password:
error -5344 making new partition
Unmount old disk
Erasing disk2
/sbin/newfs_hfs: write (sector 0, 45568 bytes): Device not configured
Remounting volume
Could not mount disk
I'm not very familiar with using fdisk, but when I tried to run it with "sudo fdisk" it told me it must be run as root...ok?
This drive originally had Redhat Linux 7 with one large ext2 partition if I remember right. Clearly something happened to it, but I don't know what.
Since I really need this data backed up, I tried using my 3rd gen 20GB iPod, but unfortunately, when I try to copy over my home directory I routinely get an error -50. This happens on specific files, but even when I try to copy one at a time, I still get a message that certain files or folders couldn't be copied. The iPod is formatted FAT32, if that makes any difference.
So, I need some advice. Should I go buy a new had drive to put in the enclosure and hope this one works? Would it be better to find a NAS, and if so, what's a good model? Should I get a 2.5" external enclosure and put the old iBook hard drive in there and try to mount that once I've installed Tiger on the new Seagate? (I know there are bound to be permission issues with getting into my home directory like that...)
Any suggestions would be very much appreciated. Thank you in advance.
iBook dual USB, 600MHz G3, 30GB HD Mac OS X (10.2.x)

Thank you for the suggestions.
I tried the repartitioning, but DU stalled out with the message "Preparing drives ... unmounting old volumes." It still didn't report any higher cpu usage, the drive light never flashed, and DU wouldn't quit normally. I tried using diskutil partitionDisk at the command line, and that returned an "error -5344 making new partition" and "You have specified partition sizes which will not fit on the device." I tried 60G as the size, and when that didn't work, I tried all the way down to 30G, still with the same result. (Interestingly, DU no longer says the disk is a WD600 as before - it just says "DMI" under the description.) What could I be doing wrong?
Oh, with the iPod I was trying to copy only a few folders, like a "School" folder, from my home directory, not the whole thing at once. It copied fine for a while, then it returned the error -50 and stopped. The message dialog with the error -50 stayed up there and would never go away, and if I tried to log out or restart, I'd be told the Finder couldn't quit because some operation was still in progress.
If I tried to copy a different folder, or copy smaller batches of files, I'd either still get that error, or the Finder would say that it couldn't copy a file, and ask if I wanted to stop or continue. Whichever choice I made, the message dialog wouldn't go away, even if the rest of the copy completed successfully. Trying to log out or restart would again tell me the Finder couldn't quit as before.
I should mention that the exact same thing happens when I try to copy some things out to my USB drive (a SanDisk Cruzer Micro). A few years ago, when I tried to copy some school files from the iBook onto a Windows 2000 (NTFS) machine over a network, I had a similar problem with the error -50. I got around that by going to the Win machine and using it to do the copy. Copying onto the iBook from either machine worked just fine, though.
Anywho, those other drive enclosures are very nice, but they're so expensive, and if I had to get a new drive, too, I might have to not eat for the rest of the month, lol. And I doubt I could get one shipped and get this little machine all fixed up before school starts next week (and I'll definitely be needing it for school, unfortunately).
So barring a good enclosure, do you think I'd have better luck with a MyBook external or something similar? Or a NAS? What worries me is that if I'm already having trouble copying onto the iPod and the USB drive, what are the chances it'll be any better with one of those? Could it just be some issue with FAT32?
Would it be possible for me to get a 2.5" enclosure and put the iBook's current disk in there, do my repairs, install Tiger on the new Seagate, and then mount the old disk over Firewire and move my files to the new disk that way? How would I make my files public so the new install will let me read them? In Windows, making the folder shared was enough...any suggestions for something equivalent in OS X (Jaguar)?
Again, thanks for your help, very much appreciated. ~:o)
iBook dual USB, 600MHz G3, 30GB HD Mac OS X (10.2.x)
iBook dual USB, 600MHz G3, 30GB HD Mac OS X (10.2.x)

Having problem with storing data in array

Hi,
I'm having problem on storing data in array. My problem is that each time it loops, the array just keep overwrite instead save to the next index. Like at 0 the value is 123, and 1 is 234. But i having that all data capture all overwrite at 0 till the last data it still show at 0. How do i correct this problem?
Solved!
Go to Solution.

How to use array to do comparison? Like Array 1 go thru array 2 to get data Loss out and build an array. Like Array 1 ,1000,1024,1048,etc before 1520 fall in between Array 2 range 1000-1500. So Freq 1000,1024,1048 etc will get Loss value as 1 and 1520 fall in between 1500-2000 will output Loss 2. and so on till the end of the list. How should do this? Need help on this.
Array 1                                                Array 2
Freq                                                   Freq   Loss
1000                                                  1000      1
1024                                                  1500      2
1048                                                  2000      3
1100                                                   :
1200                                                   :
:                                                         18000
1520
18000

Sad smiley after update. Need my data!!!

Now when its turned on its showing a smiley on a blue screen and then it turns off. My understanding from reading online is that the update did not install correctly. I NEED A FIX AND I NEED MY DATA!!!
Soft reset makes no difference.
Details:
So, suddenly my phone shows there's an update. I am ecstatic coz I have *always* has issues getting updates and here this time it was showing up on my phone as its supposed to.... I should have known better...
I am beyond sick and tried of windows now. I am 10 year Nokia user and I am pretty sure this is my last Nokia and first and last windows phone. I was one of the earliest Lumia 920 users... And have had a horrible experience. For the first 6 months, it couldn't be unlocked to be used outside the US. And I was moving out.... So I carried a brick with me that whole time. Ever since then one or another thing had not been working... and every time I would look up for a fix, it turned out there was an update but some how my phone not only misses it but couldn't get it no matter what I do. Finally I was able to go to one of the rare Nokia centers in Brazil. The guys were nice enough to get the US version of the much delayed Lumia update for my phone. After that I was sure my problems were over and it worked pretty good.... And now this.... I am sick of not being able to rely on a device that is supposed to work pretty good. I am lost confidence now for good. I would appreciate if some how I can find a way to recover my data so I can leave this **bleep** phone behind. If not... then this is the last time windows phone is hurting me... I am determined not to give it another chance... I have had to wait, loose my data or work with a degraded device for far too long now.

Provided you followed best practice and keep a backup of media files your data is safe on your Microsoft account and will sync back as soon as you set up your phone again using your account login. Contacts are at http://people.live.com and it may also be helpful to know which phone we're talking about here, it seems from your post it is a US model?
Use the Nokia Software Recovery Tool to recover your phone if you have software or software update problems. If your phone is not responding, it appears to be stuck or is not starting you can try to recover it at home before initiating a repair.
Nokia Software Recovery Tool
Click on the blue Star Icon below if my advice has helped you or press the 'Accept As Solution' link if I solved your problem..

I need between Date's

Hi Experts,
i am using this logic it comming month data,
i need particular date data.
V_MONTH = S_DATE-LOW+0(6).
V_MONTH1 = S_DATE-LOW+0(6).
Regards,
Sreedhar.

HI Sreedhar
If i have understood your problem, you are trying to get the date where as you are viewing Month, is it???
FYI, Variable of type DATS will be stored internally as YYYYMMDD.
YYYY - Denotes the 4 Chars for Year
MM - Denotes 2 Chars of Month
DD - Denotes 2 Chars of Date.
So use this info and manipulate with OFFSETS to collect as you require.
Eg:
SY-DATUM is of type DATS.
V_YEAR = SY-DATUM(4).
V_MONTH = SY-DATUM+4(2).
V_DATE = SY-DATUM+6(2).
Hope this helps you.
Kind Regards
Eswar

How to reduce size of stored data?

Does anyone know of a way to reduce the size of the stored data? The IMAP-[…]@imap.gmail.com folder in my ~/Library/Mail directory is more than twice the size of what's used on my gmail account, is it supposed to be like that?

Do you have a lot of attachments on the messages in the mailboxes of this account? One thing that balloons storage needs is that attachments may be redundantly stored in the mailboxes. If, for example, you open Home/Library/Mail/the IMAP account folder/INBOX.imapmbox you will note that it contains two folders -- Attachments and Messages. The attachments are replicated in the Attachments folder despite also being archived with the message in the Messages folder -- this may only be true if you have selected to Keep copies of all messages and their attachments for Offline viewing, however.
Ernie

Had to have a rebuild of my laptop....advice needed!

Had to have a rebuild of my laptop....have now lost all my music from my itunes, but I can't transfer back on from my ipod. Also had to register my laptop (same) as another computers, so now no music showing as purchased, though I have. Also have hours of uploaded music from my own purchased, legitimate CDs, but won't transfer from ipod...it says it will erase. So very frustrated....thanks mr technician! PLEASE ....help, advice needed!

I believe that if you do a clean reinstall from your HD's recovery sector (D) or Recovery disks, the hard drive sector C is wiped clean. Everything goes, apps, data, address books, music, pix, viruses
Is that what you did?

Storing data in structured storage

I see everywhere that storing data in stuctured storage way is the better thing to do if we want to make fast search.
But how can I do it.
I only see that the default storage is clob for xmltype and we also can say "stored as clob" but how do it for store it in structured storage.
Thank you.

You need to register an XML Schema that defines your data. You then define the type of data your XML columns will contain using XMLSCHEMA and ELEMENT clauses..
See the XML DB demo for more info

Can i access another computer's stored data on my time capsule

can i access another computer's stored data that is on my time capsule? My other computer died and I need to access files that are stored on the time capsule.

http://Pondini.org/TM/FAQ.html
See #17 in this excellent document provided by Time Capsule / Time Machine guru Pondini

InvokeAll on off-heap stored data

I'm using a distributed cache with partitioned off-heap storage because all the data can't be contained in the heap memory. However, profiling the heap memory still show the storage worker threads still have enormous amounts of data in memory even after GC's.
So that's why I was wondering what happens, when you do something like
myCache.invokeAll(new EqualsFilter("someProperty", "someValue"), new MyEntryProcessor());and there's no index on "someProperty".
When the storage containing node receives the invocation request, it must get all stored data from off-heap memory to heap memory to filter it and optionally apply the EP to it.
How does it do that? Does it end up loading all data in heap memory? The filtered and unfiltered ones? Or is the processing done entry per entry only keeping a reference to the entry being filtered and processed by the EP?
I'm using Coherence 3.5.3 patch5.
Regards
Jan
Edited by: user10601659 on Oct 12, 2010 6:59 AM

Hi Jan,
user10601659 wrote:
Hi Robert,
so what you're saying is that suppose I have 1000 objects in the cache and 500 of them match my filter, those 500 objects need to fit in my heap space when I do cache.invokeAll(Filter, EntryProcessor).
Potentially all 500 may need to fit (e.g. if they are in the same partition). Also, I suspect, besides the Java form, the Binary version of the object also will need additional capacity while you are executing the processAll method.
If this holds true, wouldn't it be a workaround to use a PartitionedFilter or a LimitFilter and invoke the EntryProcessor per partition or per #objects? This way the number of matching objects can be reduced.
Regards
JanYou can use PartitionedFilter or LimitFilter or whatever approach to break down data processed at the same time to more manageable chunks. The main problem with this multiple roundtrip approach is that cached data may change between getting the individual chunks, so you get weaker consistency across those chunks. (Data in individual chunks will not necessarily be consistent with each other). Whether this is a problem for you or not, is something which only you can decide. Whatever you do, cross partition guarantees may not be provided anyway, but if chunking only by numbers, you may lose consistency for data residing within a single partition, too.
Best regards,
Robert
Edited by: robvarga on Oct 13, 2010 2:19 PM

How to update need by date in Purchase order using an API?

Hi All,
Is there any API available in 11i which can be used to update the need by date in purchase order?
There is a API PO_CHANGE_API1_S.UPDATE_PO, but it updates only the promise date and not the need by date.
Please help !!
Thanks & Regards
Anuj

Your error comes from Sybase, so I suggest you post your question to a Sybase forum. And be aware that Sybase does not use the same tsql dialect as sql server, so you must use their dialect (if, indeed, there is any difference in this particular situation).
One note - there should be no space between "N" and the Unicode string literal to which it applies in tsql. E.g.,
= N'Executive Chair эюя'
not
= N 'Executive Chair эюя'

Is there any method to stop rescheduling of the PO Need By date from ATP if there is any holiday specified in shipping calender. The requirement is to update the schedule ship date on Sales Order but the lead time of Purchase Order should not increase

We are currently not able to manage schedule ship date proposed by ATP when our warehouse is closed. For example , we would like that ATP doesn't propose any schedule ship date for the first of May , which is a non working day in France. The constraint is that we don't want our purchase need by date to be impacted by the process.
I tried to closed one day in FR1 calendar and, after testing with order management, it appears that ATP didn't propose the closed day, so that's fine, but, our purchase order lead time was increased of 1 day and this is not what we expected.
Can you help us to find the right process.
Thanks

Hi Sandeep,
when we try to Rescheduled out the PO and the request is errored out the with the error:-
Start of log messages from FND_FILE
reschedule fails
old date in planner workbench: 19-MAY-11
new date: 07-JUN-11
header: 417474
line: 605652
po number: 2049031859
shipment no: 1
The need by date/promised date in the source instance is not the same as the need by date/promised date in the destination instance.
In the source instance,
The need by date is 19-MAY-11, and the promised date is 19-MAY-11
End of log messages from FND_FILE
---------------------------------------------------------------------------

Why files in Lightroom mobile and files in the creative cloud not the same? idea- one place(stored date) for all application ??????

Why files in Lightroom mobile and files in the creative cloud not the same? idea- one place(stored date) for all application ??????

Lightroom Mobile is not a cloud storage service. You shouldn't treat it as a way of backing up your files. You are merely storing Smart Previews of your files in the cloud space, high-quality JPEGs of your files regardless of their original format on your desktop. The point is that they are there so you can continue editing them in a Lightroom-like environment even while away from your desktop/laptop computer. The files in Lightroom Mobile can only be used in Lightroom Mobile.
This is very different from what is offered by the Creative Cloud storage, which can be used to synchronize your files between any device (that can support the individual files).
The vast difference in how each service works and its intended use is why they are separate.

Advice needed... Storing data

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