How to convert number datatype to raw datatype for use in data warehouse?

I am picking up the work of another grad student who assembled the initial data for a data warehouse, mapped out a dimensional dw and then created then initial fact and dimension tables. I am using oracle enterprise 11gR2. The student was new to oracle and used datatypes of NUMBER (without a length - defaulting to number(38) for dimension keys. The dw has 1 fact table and about 20 dimension tables at this point.
Before refining the dw further, I have to translate all these dimension tables and convert all columns of Number and Number(n) (where n=1-38) to raw datatype with a length. The goal is to compact the size of the dw database significantly. With only a few exceptions every number column is a dimension key or attribute.
The entire dw db is now sitting in a datapump dmp file. this has to be imported to the db instance and then somehow converted so all occurrences of a number datatype into raw datatypes. BTW, there are other datatypes present such as varchar2 and date.
I discovered that datapump cannot convert number to raw in an import or export, so the instance tables once loaded using impdp will be the starting point.
I found there is a utl_raw package delivered with oracle to facilitate using the raw datatype. This has a numbertoraw function. Never used it and am unsure how to incorporate this in the table conversions. I also hope to use OWB capabilities at some point but I have never used it and only know that it has a lot of analytical capabilities. As a preliminary step I have done partial imports and determined the max length of every number column so I can alter the present schema number columns tp be an apporpriate max length for each column in each table.
Right now I am not sure what the next step is. Any suggestions for the data conversion steps would be appreciated.

Hi there,
The post about "Convert Numbers" might help in your case. You might also interested in "Anydata cast" or transformations.
Thanks,

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hey hemmj !!!!!!
nice replying , first of all i d like to say thanks for response me so frequently..... i like such type of guy... i d never forget ur online support.
hey buddy, i ve a problem with applet application...
i m working on java chat server build on swing applet. As it is chat server, it is divided into two parts, one is server application and other is client application. I want to run this server app on the client server and the basic thing with this site is that it is running on .net platform(Microsoft). and the other app ll running on the client machine or end user. Now the problem is that this site would run only if the server app ll be run on server. This server app ll open the socket of server, which ll listen the request of the user...... So, the requirement is to convert this java sever class file into dll file and register this dll file with the IIS server.So, It run and stop with the IIS server.
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first i ve made the jar file of this class
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type this command which ll make dll file automatically....
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Microsoft (R) Java-language bytecode to MSIL converter version 1.1.4322.0
for Microsoft (R) .NET Framework version 1.1.4322
Copyright (C) Microsoft Corp 2000-2002. All rights reserved.
Created chatServer.dll
I cant get the problem origin from where it is comming, when i tried to convert it into .dll file it shown an error that, it did not recongnized the method in first class
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By vewing the code u can visulize the thing,, i ve marked the code from where the error is comming.
Plz do it as soon as possible, i ll waiting for ur reply......
I ll be really thanking u for that....
Thanx and regards
Niraj Kumar Singh

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