Concepts for reliable data storage

Hi all.
Suppose an application like network stream data recorder/player with cyclic replacement of old data with new one.
Which minimal concepts must be used for prevent data lost? Is transactions mechanism enough?
How to minimize a risk of damage entire database files when power-fail occures (or another event entail unexpected program crash).
Thank in advance.

I did. Opened file manager and chose the network drive. The capsule asks for id and password. After I enter it gives me access. It's empty. I clicked on properties and it tells me I've stored 20.7 G on there. I went to another computer with same results. I had been running fine off this capsule for several months.

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SELECT to_char(id) as id
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HI,
I need to design an Web based application (with database as Oracle 8.1.7 and on WINDOWS NT4.0 platform), that would handle ENGLISH as well as ARABIC (SAUDI ARABIA) data. So i need to store data in both languages.
Which is the best suited CHARSET that you would suggest me to use?
- UTF-8 format.
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also i have tried out UTF-8 format ,it works fine for me, but still i need to know why the "AR8ISO8859P6" format CHARSET does'nt work fine for me .
pasted below is my NLS_DATABASE_PARAMETERS display.
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PARAMETER VALUE
NLS_LANGUAGE AMERICAN
NLS_TERRITORY AMERICA
NLS_CURRENCY $
NLS_ISO_CURRENCY AMERICA
NLS_NUMERIC_CHARACTERS .,
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NLS_TIMESTAMP_TZ_FORMAT DD-MON-RR HH.MI.SSXFF AM TZH:TZM
NLS_DUAL_CURRENCY $
NLS_COMP BINARY
NLS_NCHAR_CHARACTERSET AR8ISO8859P6
NLS_RDBMS_VERSION 8.1.7.0.0
18 rows selected.
Please help......
You can also contact me on [email protected]

try this american_america.ar8msawin
good luck
or american_america.ar8mswin1256

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http://support.apple.com/kb/HE57#U
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OS. Also i couldn't even get the OS setup to start when i had those raid drives plugged in.. so make sure to unplug them.
Best Regards.

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SR830 data storage for rs232

Hi,
I found a LabVIEW code here which can storage data from input signal (e.g.A/I)in SR830 and transfer it by the GPIB.
I used function generator to generate a sine wave with frequency:30Hz& Vp-p:100mVolt , conencting to SR830.
Clearly ,I got a correct result when i used the code by GPIB communication interface(left graph).
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Here is original code "data storage for GPIB"
Here is rewrite code for RS232 by myself,but what's wrong i did?
Attachments:
SR830 DATA STORAGE EXAMPLE.VI ‏54 KB
scan test1.vi ‏43 KB

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Greetings John,
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Faster connection (FW 800) drives:
http://store.apple.com/us/product/H2068VC/A
http://store.apple.com/us/product/TW315VC/A
http://store.apple.com/us/product/H0815VC/A
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Firewire 400/USB 2.0/1.1
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Hi
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Please let me know if it works properly.
Bye

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Hi,
Is it possible to define a partitionned cache (with data into the heap) with off-heap storage for backup data ?
I think it could be worthwhile to do so, as backup data are associated with a different access pattern.
If so, what are the impacts of such off-heap storage for backup data ?
Particularly, what are the impacts on performance ?
Thanks.
Regards,
Dominique

Hi,
It seems what using scheme for backup-store is broken in latest version of Coherence, I've got an exception using your setup.
2010-07-24 12:21:16.562/7.969 Oracle Coherence GE 3.6.0.0 <Error> (thread=DistributedCache, member=1): java.lang.NullPointerException
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     at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache$Storage$BackingManager.isPartitioned(PartitionedCache.java:10)
     at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache$Storage.instantiateBackupMap(PartitionedCache.java:24)
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     at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache$ServiceConfig$ConfigListener.entryInserted(PartitionedCache.java:17)
     at com.tangosol.util.MapEvent.dispatch(MapEvent.java:266)
     at com.tangosol.util.MapEvent.dispatch(MapEvent.java:226)
     at com.tangosol.util.MapListenerSupport.fireEvent(MapListenerSupport.java:556)
     at com.tangosol.util.ObservableHashMap.dispatchEvent(ObservableHashMap.java:229)
     at com.tangosol.util.ObservableHashMap$Entry.onAdd(ObservableHashMap.java:270)
     at com.tangosol.util.SafeHashMap.put(SafeHashMap.java:244)
     at com.tangosol.coherence.component.util.ServiceConfig$Map.put(ServiceConfig.java:43)
     at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache$StorageIdRequest.onReceived(PartitionedCache.java:45)
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Perhaps one of this would help:
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Airstash
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Concepts for reliable data storage

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